If you haven't yet seen the first part of my Leader 3 (SE) review, click here. In it I cover an overview of the New Leader 3 including full discussion of the components, build and software setup. A quick correction too: I mentioned originally that the flight controller (namely the gyro) will only do 8kHz loop times. This is incorrect - it will actually run up to 32kHz! Certainly the first I'm aware of on a board this size and something for me to test in future.
Before I go any further I should note that my Leader 3 is a review model and so there may be minor improvements in the final version shipped to buyers. I'm in regular contact with Full Speed RC to give them feedback on what I find to assist with these improvements. The Leader 3 is available directly from FullSpeedRC.com, Gearbest or Bangood.
Since FPV performance is common between 3s and 4s I thought I'd cover that first. In short it is outstanding. Fullspeed RC shared a lot of the development of the included TX600 vtx with me an a lot of effort went in to ensuring a clean video signal all the way up to 600mW and the results sure doesn't disappoint. The result is that the Leader 3 has the cleanest video signal I have every used. There is absolutely no impact of throttle or other electrical noise on signal and it is hard to put in words just how much more enjoyable this makes the signal. I do miss the audio that AKK VTXs allow for but most people don't rate this as being important, especially on a micro. It's noteworthy that the the transmission power will go as high as 600mW - equalled only by the AKK FX3 ultimate (review here) in this form factor. OSD control of settings via Tramp works as expected. Antenna connection is via UFL is common for micros and fit for purpose.
No propellers in FPV view
Great news for those who don not like seeing their propellers - the frame design means that even with fairly modest camera angles of around 35°and up there are no props in view. Hopefully this is clear from my videos below. This also make the drums for a Caddx Turtles HD camera install beat even louder...
I wanted to clear things up on camera angle since Nick Burns mentioned it couldn't go past about 45° in his otherwise excellent review. I can confirm that the camera connector does not foul on the flight stack and does infact smoothly go all the way up to about 90° amgle. Pictures are best here so please see below:
Performance on 3s
When the Leader 3 was shipped to me, 2 custom PID prodiles were programmed in by fullspeed, Profile 1 was designed for 3s and profile 2 for 4s. 3s was tested with profile 2. Both of these profiles can be seen in full in part 1 of the review here. For 3s testing I used Turnigy Nanotech 3s 450mah 65c batteries. They weigh less than 45g meaning all up weight was around 140g. Flight time using these batteries was typically around 2.5-3 minutes with batteries coming to a resting voltage of arounf 3.75v per cell.
Flying exclusively with the HQ 3x3x3 propellers flight felt very 'balanced' - what I mean by that is the quad didn't feel overly heavy (or light), top speed was fast enough but not ludicrously fast like the Skystars Bolt X120 on 4s (review here). It was however very predictable - I could hit gaps and avoid obstacles in a way where I felt I had complete control. It was fairly similar to the way the Emax Babyhawk R 3 inch felt (review here) but the HQ props felt more predictable and familar compared to the EMAX Avans. This makes sense - both the Leader 3 and Babyhawk R are of similar weight and with 1106 4500kV motors on 3 inch props and both have optimised PID tunes. Full Speed RC seem to have done a good job on the tune here not just for the feel during flying but also in keeping propwash to a minimum, even when I tried to put myself in dirty air in 180° turns or descending directly down.
Below is a video from an early flight (2nd pack ever) in a local carpark. Typical I had DVR issues in a flight later that day where I'd gotten more familiar with the flight characteristics :/
Performance on 4s
The battery I used for all 4s testing was the China Hobbyline Ministar 4s 650mah pack. It is an excellent battery that I even use on my 4 inch racer so is very capable although a little heavy at 87g.
First of all I'm going to talk about straight up speed and my perception. It did not feel as fast as the Skystars Bolt X120 using the same battery. This is not an objective measure, purely feel. It did feel faster than the Babyhawk R 3" using the same battery.
To dig in to this further though I do need to say that that Skystars Bolt X120 is very hard to control with this battery and I did not enjoy flying it because it felt difficult to control. It felt like it needed more open space which then kinda defeats the purpose of a micro. By comparison the Leader 3 felt in complete control using 4s and PID profile 2 as customised for 4s by Full Speed RC. As a result it felt right at home on 4s with all the control and balance I felt on 3s. I think part of this is due to tune but moreso that that larger 3 inch blade is able to better support the additional weight from the heavier pack and hasn't overloaded the propeller (disc loading theory).
All other features of flight were similar to 3s - excellent video, precise handling and minimised propwash. I was really enjoying flying this until...
When I first received this model, Full Speed RC cautioned me to use 4s using the smaller Gemfan 2540 props (review here) since motors could overheat. Since I was the only reviewer to receive mine where it is winter presently rather than summer, this was less of an issue although I did keep an eye on motor temps. For this reason I stuck with the included 3 inch props for 4s.
About 10 packs in of warm motors (40-50°C only) I fell out of the sky when attempting a short speed run (see video below). On closer inspection the left rear corner had failed that I could later confirm as a motor failure (as opposed to ESC). The motor definitely was warm only as above and not hot. The only other time I've had a motor failure was on the babyhawk r when I used PIDs with too much P and D on 4s and even then the motor did not fail mid flight, rather afterwards intsead. This motor was scorching hot.
I discussed this with Full Speed RC and found that they will be using a stronger motor on the production version - the review version like I have are a prototype. As you can see below when comparing to my burnt out motor on the Emax Babyhawk R, the Fullspeed one does not look nearly as abused - it failed at a much lower load. Interestingly shortly after this I saw Andy RC's review and found he had an identical problem - motor failed mid run using 4s with HQ 3x3x3 props. Update: The prototype motors are actually 4800-4900kV and the production version will be 4500kV.
So, what does this mean for you? Until I can confirm that Fullspeed RC have moved away from the proptotype motors I can't recommend using the HQ 3x3x3 props with 4s, even in cold weather. For now stick with Gemfan 2540 props on 4s. Of course if it ships with new motors then all bets are off. Full Speed RC is sending me a full set of new motors so I will test with these and post my results in a follow up review as soon as I am able. Update: The prototype motors are actually 4800-4900kV and the production version will be 4500kV.
The Full Speed RC Leader 3 is as an excellent flyer on 3s - great video signal and predictable handling make for an enjoyable flying experience. On 4s the Jury is out... custom pids make this fly well too but the motors' inability to cope with the included 3" props are a bit disappointing. For now a bandaid solution is to run with Genfan 2540 props on 4s but I expect that Full Speed will release with a stronger motor for launch as they did with the original Leader 120. Again, my sample is a reviewer model and this feedback is used to make changes if needed to the final launch product. Full Speed RC has proven themselves to be a reputable company with well researched (and tested) quadcopters and I expect them to follow through on this model too.
This review has been kindly written by @fpv_airborne who is looking to become a regular contributor here.
Introducing the 30x30 HGLRC vtx + dvr combo from HGLRC. This is one of the first 30x30 DVR recording vtx available to the public. The DVR is switchable for 40 channels, has power levels of 25mw, 100mw, 200mw, and 500mw, and has a built-in DVR which takes up to a 32gb SD card. This board also includes a built-in microphone that records onboard sound. The vtx has a resolution of 640x480 which is reasonable for DVR recording. The HGLRC AIO VTX DVR can be bought directly from HGLRC here or from your favourite vendors including Banggood and Gearbest. It's about $40 at the time of writing (July 2018).
A closer look at the specs.
The HGLRC vtx has changeable power levels that include pit mode, 25mw, 100mw, 200mw and 500mw. It also includes 40 channels to connect to your goggles such as A band, B band, Fat Shark and R band. The board measures 36mm x 36mm, with the mounting holes 30.5mm apart. The built-in DVR has a slot under the board to accommodate an SD card up to a 32gb. This records 640x480p quality video with no static or breakup while flying FPV and this is what really sets it apart from goggle DVR. The vtx weighs just 7.9 grams and is the same size and thickness as a 30x30 mounting flight controller.
The HGLRC VTX + DVR combo works much better than expected. The small, thin board allows for easy mounting on top of or underneath the flight controller or power distribution board. The easy plug-in and -out MMCX antenna adapter also works much better than the UFL connector which was the main connector used on many types of vtx’s such as TBS unify pro and Tramp vtx. The MMCX adapter is much more durable and sturdy because of the plug-in design instead of the clip-on adapter; the latter can easily pop off during a crash and may not be easily noticed. This in turn can cause major issues such as burning out of the vtx, poor video and overheating and/or ruining other components on the stack.
From my first flight with the vtx + DVR combo I was impressed. The vtx was flawless to set up with clear instructions. Included with the vtx is a manual that includes a diagram of the vtx, wire layout, power levels and bands, and “How to's”.
The manual explains how to set up the vtx including how to wire up and how to change through power levels, bands and channels; this uses only 2 buttons that are nicely placed on the side of the board. Briefly pressing the channel side button once changes the channel from 1 up to 8, whereas pressing the button for 2 seconds changes the band from A band up to F band. Pressing the button for 4 seconds changes the power levels from 25mw up to 500mw. The DVR recording is set up by inserting an SD card (up to 32gb). Then briefly press the “REC” button and wait for the red LED beside the button to start flashing, indicating that recording has started. Once you are done with your videoing, just press the “REC” button again which will stop and finish the current DVR recording. Note that the DVR will automatically stop recording after 5 minutes.
Experience during flight:
As soon as I placed the goggles on my head, I was surprised to see the difference in colour compared to my other vtx, a TBS unify pro. The video quality seemed much more saturated and warmer in sunny areas and darker in shaded areas. This was seen partially in the FPV feed but was much more noticeable in the DVR recording after footage was reviewed. I was previously using a TBS unify pro with Foxeer antenna and Foxeer Predator v1 mini that gave images of more natural colour, but once I switched to the HGLRC dvr vtx, the quality of the image improved. I understand that not everyone will prefer the warmer, more saturated colours. If so, this can be changed with the camera’s OSD cable.
However, while flying I noticed that there was far less static in the goggle view from the HGLRC vtx compared to the TBS unify pro vtx. Both were running 25mw, and both had the same Foxeer antenna, Foxeer Predator camera, and flight controller. I was surprised to notice this difference but it was quite obvious in my test flights of both quads at the same location and under the same conditions. Because of the built-in DVR, there is no static or break-up which makes the video much more pleasing for the viewer to watch.
In conclusion, I would recommend this vtx to people who want to build a light racing quad with quality DVR footage for their races - but without need to add the extra weight of a GoPro. This DVR vtx board can also replace the more expensive Runcam split for most people, if you do not mind the loss of quality but want to have as little delay to the FPV feed as possible; in racing every millisecond counts.
However, there are some issues in terms of possible human error to be considered before purchasing this vtx.
Firstly, if your quad flies far away without control, or crashes in long grass, in high trees, in a different property or even unplugs in mid-air, the video feed, that was recording, is not accessible to review to locate where the quad has landed or crashed because the SD card is in the quad and not the goggles.
Secondly, after the races you might forget to stop the recording by pressing the button on the vtx, and instead just unplug the quad’s power lead. With the battery lead unplugged, the video will be cancelled leaving no trace of the recording on the SD card. This is because unlike goggles, the vtx-dvr unit has little capacitance to keep the circuit charge while recording is finalised.
The HGLRC AIO VTX DVR can be bought directly from HGLRC here or from your favourite vendors including Banggood and Gearbest.
AKK bring out new products at an amazing rate, particularly VTXs which are their core product. They tend to go through stepwise rather than stepchange product development where they make gradual improvements to already good products - the opposite of 'if it ain't broke, don't fix it' which is a say I HATE. Best of all they do this at an extremely competitive price which is possible only because they tend to sell direct rather than go through a third party. Don't worry they ship at zero cost or very little and are available on Amazon. I've already reviewed the excellent FX2 (30.smm stack) here and have installed the original FX3 (20mm stack) here on a 4 inch lightweight build.
Features as listed
The product I am reviewing today is the AKK FX3 Ultimate which builds on the AKK FX3 as mentioned above. Key features are:
I wanted to do a rebuild of my FlexRC Komori (original build here) as an efficient longer range quad so this was the perfect product to use - full control with smart audio, 20mm stack mounted for extra security and up to 600mw power for improved range. Having audio on longer range is highly underated too since you can hear if anything is suspect with your props or motors long after you've gone out of range of direct sound. To summarise install was painless. I prefered the solder pads to the connectors on the FX3 and the stack mount means I can get a super reliable and secure mount without reverting to doublesided tape or cable ties. I love having the option of UFL or MMX in this size. See below for images and specific commentary on the install - click to embiggen.
Like my tooth fairy and floss 2 builds I've used the Realacc UXII Stubby RHCP MMCX-J 5.8GHz 1.6dBi Super Mini Short Antenna here. It is a $6 right or left handed CP 1.6g antenna that is plugged into and supported by the MMCX connector if the frame allows. For me these are a super clean solution - no long pagoda or cloverleaf stalks or even dipole whips that need extra supports. Even the AXII ufl requires more room and a 3d print support. Reception is 'good enough' given the benfits I get. Other connectors and formats are available.
I fly with Aomway Commander goggles (review here). Reception is good enough for me but not a good as some of the stand-alone modules that are available for Fatshark goggles. I found the signal to be clear and static free when in line of sight and got fairly minimal break up with behind trees which lessened as I ramped the power up. I used the Aomway Clover for omni directional and the RealAcc patch for directional (review here).
I can confirm there are absolutely no issues with Smart Audio on Betaflight 3.3 and 3.4 and adjusted bands, channels and power without issue. The vtx it replaced from the origianal Furibee X140 (review here). This VTX transmitted video well be had no audio, no smart VTX, a very awkward button/LED interface and a direct solder connection only for the antenna. The FX3 not only brought more transmission power options but also added a lot more convience - I would choose to never change channel or power previously now I frequently change to suit the conditions. Also the option of using UFL is excellent because for micros this is typically a more suitable connector given space constraints. I'm just lucky that the Komori frame has the stack mounted close to the back for the UXII antenna with good clearance.
See below for a DVR of my flight running 200mW.
AKK pricing strategy?
From what I can tell AKK run on very tight margins akin to RCX motors at MYRCMART. This means that they only sell direct since there is not a lot of margin available for resellers and so the prices are very low for the feature set. For example the retail price of this unit is only $18. Nothing gets close to this price for the feature set. Furthermore at the time of writing, AKK have a sale on, meaning it is available for only $16
The AKK FX3 Ultimate is simply the most feature packed 20mm vtx available at time of writing. It is also the first 20mm sized VTX to offer 600mW maximum power and options for MMCX AND ufl connections. It is simple to install and maintain with direct solder connections and the standard stack size mound means it is very simple and secure in your build. I can happily recommend this for new build or replacing an older VTX that doesn't have the full feature set you want.
The Leader 3 (SE) is a follow up to the hugely successful Leader 120 which I have reviewed and documented modification extensively, most recently with a summary here. Both are available from Fullspeedrc.com This has been a highly anticipated release not least of which because there has been no releases from Full Speed since last years' Beebee 66 light. The good news is that a big chunk of that wait has been spent working on the Leader 3. FYI two of the main guys are pilots from Full Speed RC are pilots and do a lot of work testing before release which is a welcome change in this hobby compared to many models that come out half-baked.
Firstly the Leader is available in 2 variants. The standard model (Leader 3) can be seen below and weighs 87g with regualar standoffs. The Leader 3 SE is exclusive to Fullspeedrc.com and comes with a 3d printed canopy instead of the standoffs. It is 6g heavier but offers several benefits that I'll cover a little later on.
A run through the components
First the frame. Like the Leader 120 the base plate of the frame is 3mm thick although it has been stretched to 130mm motor to motor diagonally rather than 120mm This means it is capable of accepting a true 3" propeller rather than 2.8" maximum on the Leader 120. The frame is most definitely still a 'deadcat' shape meaning the two motors are further apart (107mm) than the 2 rear motors (98mm). Additionally it is a 'squashed-x' compared to a 'stretched-x' meaning the front and rear motors on the same side are closer together. This means it should be more stable in the roll vs. pitch axis but modern flight software somewhat negates this. Compared to the leader 120, sideplates have increased from 2mm to 3mm thick which should aid durability. More imporatantly a 19mm gap rather than 17-18mm means the leader 3/SE now natively fits a 19mm micro cam. It's worth nothing that the baseplate is only 1 piece so you cannot replace single arms. Personally I think replaceable arms are unnecessary on any quad size less than 4" since there is much less leverage for breaking on a smaller quad. The frame can be purchased separately here.
The canopy (Leader 3SE only). When I first saw the canopy I wasn't keen because it adds 8g weight however I think the functionality may just offset that - jury is out until I fly it some more. The 3d TPU print is of very high quality available in black,white, red, purple, blue or yellow and performs the following functions:
The motors are 1106 4500kv which is the same specs as those found on the Emax Babyhawk R 3 inch and the Skystars X120. They are not open bottom and have mounting holes for regular t-mount props and the emax 2.3" avan props. Most importantly they are rated for up to 4s.
Like the original Leader 120, build quailty is excellent. Solder is clean, wires are cut to length. Not much more to say here, it is well beyond my ability! With the quad assembled there is plenty of room behind the camera to adjust tilt (45° and beyond are capable) and the receiver is mounted in this void. with plenty of room left yet. This is speculation but I'd like to address anyway since it seems like a common thread: my best guess is the caddx turtles HD FPV/DVR (not yet released at time of writing) will fit but not without a little modification. My reasoning is that there seems to be 2-3mm 'spare' room between each stack layer. If these standoffs are trimmed by this amount you will be able to save 6-9mm in height which should be enought to fit the turtles board. It will require some fine wire management and a steady hand to trim the standoff but I do think it may be physically possible - a project for another day. That being said, the double stack of the runcam split micro definitely will not fit.
Plenty to talk about here although most can be foundin commentary of the Betaflight screens below. If you don't choose to read these however:
Final thoughts pre-flight
As you can see from above this looks to be a very well thought out quad and not something slapped together from a spare parts bin. The Babyhawk R and Skystars bolt X120 have both shown that 1106 4500kV motors perform well on 4s in 2.5" and 3" so I am excited to see what the Leader 3SE will add here with all the work that has gone into development from a hardware and software perspective. On paper this looks to have the edge on both of those models in terms of weight, VTX capability and ESC current overhead however the real test will come in flight - stay tuned for part 2 of this review where I will cover flight in full - I already have 3s and 4s batteries charged for tomorrow :)
The Fullspeed RC Leader 3/SE can be bought directly from Fullspeedrc.com and is also available at other retailers however buying from the source is your best chance to get your hands on one quickly.
This review has been kindly written by @fpv_airborne who is looking to become a regular contributor here.
Introducing the HB64
The HB64 64mm micro brushless quadcopter is available as a plug and fly kit from HobbyCool.com with either 14000kV or 16000kV 0603 motors. This review is based on the 16000kV variant and is my pick of the 2. It is just 1mm smaller than a traditional brushed tiny whoop but has much more powerful motors. It is 11mm smaller motor to motor than the brushless Happymodel Snapper7 (review here). I am happy to say that the HB64 has impressed me very much!
The HB64 brushless quad has a 4 in 1 esc and a F3 flight controller onboard. The 4 in 1 esc is rated to 5A and is Dshot compatible and has BLHeli_S configured onto it. These days, we are seeing several companies who are making AIO FC combo with built in esc but this stack seems to work very well. Added unnecessary weight is a big issue for micros but the HB64 weighing in at only 24 grams without battery or 30 grams all up including battery. This weight is impressive knowing all that is included. 4 in 1 esc, FC, battery, motors, props, frame and cam/vtx combo.
The camera/vtx combo works much better than expected. It has a discrete monopole/whip antenna just from vtx to top of frame pod. This antenna is great for the quad because of its extremely light weight. It is also unlikely to be broken because there is little surface area of the antenna to hit objects in crashes. This is an improvement from the original tiny whoops which had the cloverleaf antennas that are easily bendable and breakable.
The instructions that come with this micro quad are insufficient for the full setup of this quad. Included with my quad, there was a little sheet which had a diagram and labeling of the FC. This diagram only showed the FC and nothing else like the 4 in 1 esc, VTX diagram or receiver setup. Even though there is information on Google, it would have saved a lot of time and effort for the buyer to receive more extensive instructions. To that end I have spent some time here documenting what has worked in case others are looking for this information.
I was pleased to find that the betaflight firmware was fully setup with Betaflight 3.2 and only needs to be bound to the transmitter to be ready to fly. The pids and (ALL) settings have been adjusted to suit the quad. All that needs to be done is to bind the receiver to the quad, setup switches for arm etc. in the receiver tab and you’re ready to fly!
While I was setting up switches, after I setup arm, I also set up ‘flip over after crash’ which is a MUST for anyone that crashes a lot because it prevents those awkward walks of shame to rescue your quad. To use flip over after crash, just switch the switch which is assigned to flip over in the receiver’s tab and then arm using the arm switch, tilt the pitch or roll depending on the angle and objects around the quad until the quad is upright, then disarm both switches and re-arm the arm switch. You will then be upright and ready to rip again!
Since I run a Flysky radio, I used a small FS-RX2a pro receiver but the SBUS-based FRSKY receivers will work in the same manner. To set up the FS-RX2A Pro receiver, all that is required is the receiver to be soldered to FC by the GND, 5V and ibus. Then hold the bind button on the receiver while powering on from lipo. Now turn on the transmitter and go into bind mode and that's it! As simple as that and it is bound together. This receiver only works for flysky transmitters but works amazingly well for the purpose and size it is. Next step is to go into betaflight and make sure the serial based receiver (SBUS AND IBUS receiver) is selected and Sbus or ibus in configurators tab, Then in receivers tab, select switches for arm and I strongly recommend you try flip over after crash and beeper in case it is lost or hidden behind something because this quad is surprisingly easy to lose behind a cabinet etc.
Finally a good flying micro brushless!
Before I saw this I was hesitant to try another micro build after my previous Eachine H8 with AIO camera and tiny whoop. This is because back when I had those 2 quads, the power and components were not up to acceptable standard and the power was unbalanced so one motor would normally be powered more than the other 3 which created a lot of issues for the pilot. That is why I did not recommend them before. But all I can now say is “WOW”. From the first battery of this quad, I have been impressed. Within a year and a quarter, I can see the huge improvement that has been made in the performance and quality of micro quads, especially since they are now brushless which allows them to have more power and a much longer flight life. Moving forward into the future, brushless is becoming very popular because it allows for a lot more power than the brushed micros, lasts much longer and is more durable and can save weight because of the new ‘Naked bottom’ motors.
While flying this micro, using the first 30 batteries, I was very impressed with the 3 - 3.5 minutes of continuous flying which is great flight time for a micro like this. But after the first around 50 packs through this micro, the battery life shortened to 2 minutes to max of 2.5 minutes before I started to feel the battery sag. This is not that much of an issue because it was only because of the batteries’ life time. You would have much more fun if you purchased at least 4 260mah 3.8V batteries and gain longer battery life because the flying time would be more spread out over multiple batteries versus the 1 260mah battery that is included with this micro quadcopter.
I was really happy when flying this quad with the AIO camera quality. The quality and zoom of the lens on this camera cannot be changed, but as a stock unit they perform amazingly well. Everything in the camera’s sight is visible and surprisingly clear for a nano camera. The quality of this camera in my opinion is comparable to the “Stock” Foxeer HS1177 fpv camera with all the colour and clarity in the view. The camera however is fixed view. This means that the camera is fixed at a 20° angle. However, it works very well with the power and the weight of the quad while keeping the speed fast.
The video I experienced with this quad has been more than enough for what it has been designed for. Flying this quad indoors, the video feed can travel through a couple of walls before severely breaking up. The antenna is well covered and at 25mw at 12 channels, I have not had many issues with the range unless flying between multiple walls.
In conclusion, the HB64 micro brushless quad is an excellent micro quad for anyone from a beginner just getting into FPV to a long-timer FPV pilot for those indoor sessions or just some fun for those rainy days. It has more than enough power for indoor races or to rip around the house/warehouse. Its size and power also allows it to hit those extra small gaps that are impossible for larger micros or 3” quads to hit. Its advantages overlap the advantages from any brushed “Tiny Whoop” and for the HB64’s price point, it is definitely worth checking out and potentially worth buying if it ticks your needs. This quad is also very very durable. I have crashed it from high, slammed into many obstacles and it has just held up without any bent props because of the included prop guards. Within my first 20 flights, I crashed into a deep puddle of water where this quad was fully submerged for several minutes but after putting it under the hair dryer and letting it dry off, I plugged it back in and it worked like it did before the soaking. My last point is to address the quality of the solder joints and construction of the quad. Every part of this quad appears to be well thought out and as a result is strong and durable against many obstacles. In my opinion, I would recommend this quad 100%.
The HB64 micro brushless quadcopter is available at HobbyCool.com:
This is part 2 of the review. In part 1 I discuss an overview and setup (including betaflight settings from factory) are covered in detail: Part 1 review
Firstly a very important correction. In the first review I showed a picture of the quadcopter minus battery sitting on a set of scales at 65g. I took this for granted and after measuring on my own scales got 84g. I don't usually trust weight in text but seeing it was sitting on digital scales I did not measure myself. Disappointing as this is misleading so I updated Gearbest immediately. To their credit they promptly took the image down and corrected the weight in the description - see below.
Preparing for flight
Just some minor housekeeping prior to the first flight. XM receiver was fixed in place on top of the VTX as it was dangling free when I received it. Antenna was fixed in place with a cable tie off the rear arm and heatshrink to secure. VTX antenna got the same treatment off the rear upper-deck of the frame. Lastly I replaced the rubbish battery strap with one from RJX hobbies (review here). Although a buckled strap was included as well as the one picture above, it was much too long? Weird.
Flight performance on 2s
Just because the Bolt X120 *can* fly on 2s doesn't mean you *should* fly on 2s. I used my Turnigy Nanotech 2s 950mah (47g) pack and needed about 40% throttle to hover. I could fly but performance was lacklustre and I got bored. I did get about 4 minutes flight time but won't say any more.
Flight performance on 3s
After my initial disappointment on the weight, performance on 3s 450mah turnigy nanotech was better than I had expected. It felt controlled with enough speed to be enjoyable. I had to switch to default betaflight 3.3 PIDs though since the customised PIDs look more like a 4s tune and felt sloppy as a result. I did manage to get good flight times on these little batteries of approximately 2.5 - 3.0 coming down at 3.75 volts and had fun doing so. Given then power of the quad I'd probably pefer a 650mah 3s for another minute or so of flight and would have less concern about sagging on big throttle punches. For the places I usually enjoy micros the most (tight with small trees) I found 3s the most fun.
Quick update: compared back to back on same batteries with my Leader 120 which is lighter (68g vs 84g) with 'smaller' motors (1104 7500kV vs. 1106 4500kV). I found it was similar speed with comparable handling and I actually got as good if not slightly better flight time on the Skystars Bolt - the extra stator size was negated by the lower kV from an efficiency standpoint. The leader however cannot do 4s...
When I went from 3s to 4s on the BabyHawk R 3" (review here) I got a reasonable increase in speed but not 33% as you'd probably expect. Given the same motor size (1106 4500kV) I was expecting something similar here but got a complete shock here - This thing ABSOLUTELY SCREAMS on 4s. I've always liked the Gemfan 2540 props (review here) but have never tried them on 4s and boy, they sure hold up and deliver on the extra power, it was like a different quad altogether. The speed was like nothing I'd felt on a micro and I had real trouble managing in a tight area. This probably wasn't helped by the fact I was using a CNHL Ministar 4s 650mah battery which weighs 87g so I was really blowing out on corners, even with a lot of extra throttle. It reminded my of running a heavy 4s 3 inch with 1408 motors - super fast but handled like a brick. I'd dare say 450mah 4s at around 62g would be a better option for weight control. at the cost of some flight time. As it stood I was getting 4 - 4.5 minutes on the 650mah battery. I've since moved to betaflight 3.4.0 and have got the tune tighter without oscillations but it is still a handful. For my piloting ability running this quad on 4s requires a bigger area akin to my 4 and 5 inch quads but that kind of deafeats the purpose of this micro. For my money and ability I actually prefer this on 3s - It is much quieter and handles better with the lower weight which is better suited to small parks. The noise alone on 4s makes people more wary of this one.
Rather than trying to recommend how many cells you should run I've merely stated my opinions on what I want from a micro. The most important thing here is that this Skystars Bolt X120 is well and truly capable of comfortably running 3s or 4s depending on where you are flying or how you are feeling on a particular day. The new throttle limiting feature on betaflight is a great way of limiting power to fly on 4s if for example you want to stick with just this battery size with power more akin to 3s. I've written a full tutorial on this here including how to assign to an AUX switch.
Although I alluded to the similarities to the original Leader 120 (review here) it is clearly a different quadcopter with a different feel and different capabilities - it has a much better camera and VTX but is much heavier and designed to run on more cells which make it heavier again for a different flight feel. A better comparison is perhaps the BabyHawk R 3 inch which I find handles better but lacks the speed of this model, particularly on 4s. Images below on a scale for all of these for comparison.
The Skystars bolt can be bought exclusively from Gearbest in several different formats - an unbuilt kit with no receiver (PNF), a built quad with no receiver, or as a built quad with FRSKY or Flysky receivers.
Check on my discounts page regularly for specials but at the time of writing the unbuilt kit is available for $117 and the FRSKY BNF as seen here is available for $134
So the Emax Hawk 5 has been out for a couple of months now and it has really captured the imagination of community. This is because it was an EMax-USA driven initiative that started as a way to sell more parts (Magnum stack, LS motors, Avan props) but ended up so much more. Where the Hawk 5 separates itself from all other bind and flys that have come before (except perhaps the holybro kopis) is that is more than the sum of it's parts - the development that has gone into matching the components, developing a strong, stiff yet lightweight frame and then tuning the whole package means it is a bind and fly that is genuinely competitive for racing out of the box. Listening to HyphPV and Sean Taylor in various channels they both believe this is a bonafide racer which is high praise coming from them.
I'll try keep this review brief because there has already been a lot said about this quad but I'll try to address the aspects that struck me as peculiar or aspects I don't thik have been well covered.
I think the component choice looks solid but unspectacular however the way that this comes together in for flight is super impressive.
Rather than going through the setup step by step in boring text, I've screen-grabbed all the relevant tabs from betaflight below. In short this quad includes custom filters setup, PIDs and rates so that you have an excellent tune right out of the box. This perfectly matches the specfic frame geometry, weight, motors and props that are used. Confident tuners will no doubt be able to adjust to their specific feel but I can say that I've come across no better custom tune in any quad yet, it is comparable to the babyhawk R (my review here) which makes sense - it was tuned by the same team.
Early flight performance
Wow. I had preconceptions that the 2206 low kV motors would be underpowered but was completely wrong. This is a fast, highly manouverable quad that is well tuned. To date it is the quickest quad I've flown and objectively has been found to hit over 100mph consistently. More than that though it corners well thanks to the 'grippy' props and light weight. I won't carry on here about flight but it felt well and truly locked in, the best quad I have flown.
In terms of FPV the signal was excellent on 25mW which is what I'm limited to on racing. There was absolutlely no sign of electrical interference or noise on my go-to channel (F2 - 5760MHz) at any throttle level. Just as importantly the image from the foxeer arrow micro pro is surprisingly good. This camera is a surprisingly good improvement over the micro arrow 1 or 2 and the micro swift 1 or 2 - I believe the presets were greatly approved on. I've actually ordered 3 more of these cameras to replace my others with because so far have not been a fan of the newer CMOS cameras.
One thing that felt unfamiliar to me were the way the props delivered power and the noise or the lack thereof. Additionally they pull a lot of current -I peaked at 110A on a 1500mah 4s pack. My guess is that in order to take advantage of the relatively low kV motor they went with a VERY agressive propeller with a distinct geometry. After swapping over to a HQ 5x4.8x3 which is stilla fairly agressive prop the Hawk 5 felt much more familiar and predicable to me with a power delivery and audible feedback I'm much more familiar with. I didn't feel I lost anything in speed or grip but peak current draw dropped off to 97A, i.e. 10% improved efficiency at high throttle. I need to note that props are a personal thing and this is my preference. You may find you like the stock Avan Flow props much more, I'm more of a HQ/Dal guy.
Lastly I'll say the efficiency on this is very impressive, again probably down to their choice of motor.. Everyone flies differently so will get different flight times depending on what they are doing but this I founf that even with my most tired 4s 1000mah pack I was able to get 3 minutes of flight which outperformed my lighter Floss 2 build which hand 'only' 2205 motors. On a good 1300mah I got 4 minute sof hard flying and from 1500mah about 4.5 - 5 minutes.
If you are looking for a 5" bind and fly quad quite simply this is the one to get. $250 sounds like a lot compared to other cheaper ones but as I've said before this is so much greater than the sum of it's parts. The clever choice of components, lightweight frame and wonderful tune make this a great quad and it shows - at the time of writing it is always in and out of stock depending on where you shop. Since so many have sold there is also a very big community - more people to solve problems and enhance. For example customs canopies, go pro mounts and recommendations for budget meaningful modifications and customisation is much more readliy available than for less common quads that tend to come and go. I'll bet this quad will be around and supported well for a long time.
Support is great - as you can see above all parts are available from many retailers so replacements are not just available but commonly available.
I can't speak to reliability yet since I haven't flown enough but since they haven't gone with the very latest and leading edge technology and hardware, that means there have been time to iron out the bugs. I'm expecting few problems but will certainly report back if there are.
Lastly I'll make a note again on the efficiency. In the race for power with bigger motors and steeper props this often gets forgotten but EMax seems to be going down the path of optimised efficiency and it shows here. The rhetoric from them is the the LS and newer RSII series are motor were not developed for all out power but more for efficiency which is what racers have really been demanding - making sure that on fast tracks that they still have battery left at the end. This is a benefit to the racer of course but for the casual pilot more efficiency = longer flight time = more stick time for learning and more of the the fun part of FPV... actual flying!
In summary this is a great model and comes highly recommended from me. Of course I'll be looking to improve where I can do so effectively and cheaply and will write about this where it's meaningful. Gearbest kindly supplied me this model and I'd encourage you to purchase from them as per the link below. Using this affiliate link comes at no cost to you but will help me to continue making and publishing reviews like this and recommendations for improvement.
Updates! I've new written a blog on bang for buck upgrades and also a comprehensive walkthrough on a VTX upgrade to allow DVR, smart audio, great power options.
Please note this review will be in 2 parts. In this part (1) I will cover an intro, overview and setup of the quad and I will completed part 2 once I have a decent amount of packs through it. Part 2 is now here
In the last 10 or so months that the Fullspeed Leader 120 (review here) came out, a whole new category of 2.5" quadcopters have been released. These have mostly knocked out the 2" brushless market owing to better power and efficiency that the 11xx series motors are able to deliver with 2.5 inch props - most notably the Gemfan 2540 (review here). In all this time, none have really hit upon what made the leader unique: it's supremely light weight. The Aurora Mini Fight, the HGLRC Hornet and to a lesser extent the 3" babyhawk R (review here) have all showed what more powerful 1106 motors can do but have all had 15-25g or more weight on the Leader.
Enter the Skystars X120 Bolt. This is an 1106 powered 2.5" quadcopter and weighs 65g - only 2g more than the Leader 120 whilst retaining a durable 3mm thick bottom plate. Better yet it receives all of the modern improvements that have become more common on brushless micro quads since the Leader's release:
Overview of the build
Soldering around the stack looks adequate and it is nice to see they took the time to keep motor wiring tidy and tucked away. Motors themselves are 1106 4500kV and are a naked bottom design which helps with cooling and weight. They are similarly notchy to the Emax RS1106 motors on the Babyhawk R. Motors have only 2 mounting holes on the frame arm by design. On mine 3 had all 3 screws but one had only 2. No big deal for me but a little sloppy on QC.
Below is the stock betaflight setup. At the time of writing (June 2018) Betaflight 3.4.0 has just been released as RC1. The Skystars Bolt X120 came defaut with 3.2.4 which is a release that has dynamic filtering so I am happy to leave this be. The default target was omnibus F4 SD which is odd since this card certainly has no SD card for blackbox storage. When I update I will be changing the target to omnibus F4 no SD.
I am pleased to say that setup has been customised. In particular I like that the dynamic fliter has been turned on but especially that custom pids are present on profile 2. All values are significantly lower than default and my guess is that they are set up for 4s. Interestingly the rates look quite unique - max yaw rate is increased over stock @ 769, pitch is higher at 870 and roll is very high at 1176.
For the purpose of reference I have a screen shot of all customised screens below and my take on the unique settings.
So that will wrap up part 1 of the review. Keep an eye out here for part 2 where I will maiden and try with 2s, 3s and 4s of varying sizes with my take on performance and DVR footage. Thanks for reading.
The Skystars Bolt X120 can be bought from Gearbest who kindly provided this model for review. It can be bought from Gearbest in multiple formats to suit your transmitter including:
I've had the AKK FX2 in my main race quad now for 3 months because of less than ideal experiences with longevity from other VTXs in the past. I can say that after numerous race meets, fun fly sessions and solo practice it has held up perfectly with no issue performing exactly how I want - no fuss. Furthermore when flying in a group I've had no problems of channel bleeding or power-up blasting which are the features that TBS and Immersion RC promote as key features in their premium VTXs that cost nearly twice as much.
More importantly than this though, the FX2 gives an excellent signal. I don't find myself wanting more than 25mW except when flying around dense trees when I use 200mW for extra penetration. I have had no need to run 500mW or 800mW other than just to test that they work. For disclosue I use an emax RHCP pagoda antenna and a RealAcc 8dbi patch (review here) on my Aomway Commanders (review here) and a UXII MMCX stubby on my quad.
None of the above are 'killer features' but again, just do the basics that you'd hope for in a good vtx. What is unique about this model though is that it sits tidily and firmly in the flight stack of my Floss 2. Alongside the Sunrise Cicada all in one ESC/FC (review here) I use it makes for a super solid stack that has not cable ties, double sided tape or hot glue. Additionally given the way the MMCX connector exits cleanly out the back I can either use the included pigtail but my new preference is to use the UXII stubby MMCX CP antenna. This is super light and super compact on my floss 2 - no protruding antennas or mounts to be broken. Lastly the base of the board is dead flat. I didn't see the advantage of this until I saw FC board like the Kakute with the elevated gyro - the FX2 definitely clears this with standard standoffs. Alternatively you can fit a skinny receiver like a FRSKY XMplus between the FC and vtx like I've done below:
In summary, all of these 'little things' done right make for a really good vtx ESPECIALLY since it can be had with free shipping under $20. These are sold exclusively from AKK with free (and fast) shipping or from Amazon.
If 30.5mm mounting is not your thing, the FX3 is based on a 20mm stack and the X2 is a board that will require the aforementioned cable ties or double sided tape while the nano3 will mount to the back of your runcam micro similar to how the FullspeedRC TX200 (review here) does it. The Nano only accepts 5v but does do smart audio.
The FX2 is also available in the 'ultimate' variant which will output up to 1200mW but it's hard to recommend this for quadcopters - even for long range the pros like FPVProvo recommend only 200mW and rather focussing on your aerials and receivers.
The options from the article above:
If you are reading this between the 6th and 12th of June, AKK currently have a sale on as below, click on the picture or any link above and it will take you to their sale pricing:
After several false starts including the FullspeedRC beebee66 which looked so promising (review here) I've finally found a real brushless tiny whoop - the Happy Model Snapper 7. This 75mm brushless quadcopter is 10mm larger in diagonal motor to motor distance than a typical tiny whoop or clone but can still be very much classified as an micro indoor quadcopter. I'm pleased to say that the awfully named Happy Model Snapper 7 exceeded my expectations in practically every area.
What is included?
The standard version is $10 more than the basic version and simply speaking offers superior value for money. Included is:
As you can probably see above the standard version includes 3 batteries instead of 1 and a 6 channel charger instead of a single USB charger. Because I was so impressed by the charger, I'll call out here the details of what made it so special:
Quad specs and discussion
Key specifications of the quad are:
The real innovation and star of the show is the integrated flight control/ESC/receiver. The flight control and BLHeli_S ESC on the same board is nice and a useful step forward from spearate boards as on the BeeBee 66 that mean it is more compact and weighs less (4.3g for this board). We've seen integrated receivers before but not with an SPI interface as this one has. In theory the SPI interface is much faster than the SBUS interface (gyro is connected via SPI) but for practical results this frees up a spare UART and ensures you get FULL telemetry (confirmed on my Taranis Q-X7s). Addionally it means that rather than choosing a serial receiver in betaflight, you choose a dedicated SPI receiver and can choose between D8 or D16 for FRSKY or AFDHS or AFDHS2a for FRSKY. Lastly binding is easy! you no longer need to use 3 hands to hold the tiny button down while binding - power on and then hold the bind button down for 2 seconds. Bliss!! The Crazybee F3/ESC/RX is available separately in FRSKY and FLYSKY versions
Nothing much to note about the AIO camera from spec perspective, nor the motors - the real test will be in flight. The frame however is intersting. The rings around the props look like ducts but are actually just protectors meaning you should expect flight performance more like a typical guard-less quadcopter rather than a ducted whoop. Guards look to be cast from 7075 aluminium and are integral to the frame, i.e. cannot be removed.
The instructions that come with this model are succinct, well written and complete. It goes into detail with receiver choice in betaflight and binding procedure due to the SPI interface. As mentioned above: Easier to bind and choose the correct recevier. For flysky users it is particularly useful that you can choose between AFDHS and AFDHS2a. You'll be pleased to know that betaflight has been full set up from factory for all the elements that are unique to this quad althought the PIDs are stock (yet run fine). Please see below for stock betaflight setup and my comments in the gallery below:
It's worth noting that since this runs BLHeli_S, all of the latest Dshot commands are available including motor beep and anti-turtle mode aka 'flip over after' crash. Both work very well :)
I've seen a number of brushless whoops that have looked great on paper but none yet have actually bettered the flight experience by a simple brushed whoop like my santa whoop (part 1 and part 2 reviews here). That's because until now the brushless motors haven't scaled down well and offered poor power and efficiency. This meant they had no better thrust than a good brushed whoop and much worse battery life.
I'm really pleased to say that this model is different. Yes I know it has a 10mm larger frame and a 450mah battery but performance is superior to even a heavily modded whoop. What does this mean? It can better recover from manouvers and it is a more viable outdoor flier on still days. Punch outs are surprisingly good! As you can see from the video it will happily navigate a playground and trees. The flight characteristics are really interesting. I'd liken it more to a micro burshless than a whoop because of the extra power and lack of full ducts. This means I can be more aggresive with cornering using more roll rather than the yaw-heavy flying I do with whoops. Further to this it makes me more confident in acro mode whereas I find a whoop in acro mode really foreign. In tight spaces and obstacles and at lower speed (e.g. indoors) I still feel more comfortable in angle mode, just like a brushless whoop.
For flight time I got about 3 minutes when charged to 4.2v or 3.5 minutes when charged to 4.35v. Open field flying dropped battery life to about 2 minutes but this is not typical flight with a micro like this. This tells me these motors are most efficient in the 30-80% throttle range which is where most tighter flying is done - like the playground, indoors or around small trees. Nice to know the power is there if needed though. I'm not a fan of brushless motors smaller than 1102 but think these 0703s are actually pretty good - particularly with this combination of components. Furthermore they are the quietest sub-1102 motor I have heard. Spares are available here: https://www.gearbest.com/motor/pp_1717534.html
I was really pleased with the image out of the little AIO cam - it was as crisp as I've seen with as good a colour handling as you can expect for this type of camera. The camera angle adjustment was really nice and with the power this offered a well thought out capability. Video signal was very good even around trees and I started to drop RSSI on the control link well before video deteriotation before travelling out on an open field. I think the receiver antenna location could be optimised (below) but think you'll struggle to get the 300m claimed range... <Quick update> I've since routed the antenna up through the canopy rather than underneath. I think the reception may be marginally better but certainly no more than 100m in line of sight conditions.
The HappyModel Snapper7 is an excellent supermicro brushless whoop-style quadcopter that is available in a great value 'standard' pack which includes 3 batteries and and versatile charger. For it's size it is very light weight thanks to the heavily integrated FC/receiver/ESC board that includes the very latest receiver interface that makes setup extremely simple. By combining this with well made 19000kV motors and a suprisingly good AIO camera they have created a brushless tiny whoop that lives up to what we've wanted - a familiar whoop style quad that is suitable for indoors with a level of power and response that micro brushed quads just cannot achieve. Furthermore it feels much more at home in rate mode (acro) flight compared to a ducted whoop. Unlike earlier brushless models this does not come at the cost of battery life where 3-3.5 minutes flight time is realistic. Only time will tell how the motors and aluminium prop guards will hold up but with 20 or so packs through I've not caused any permanent damage plus the motors are still running quietly.
The Happymodel Snapper7 is available in a basic bind and fly package with 1 battery and a simple charger for just $85 in flysky or frsky versions but I'd recommend instead going for the $95 standard package which includes 3 batteries and an excellent 6 port charger.
I'd happily recommend this as more powerful alternative for a brushless whoop for indoor flying and even outdoor flying in no or low wind. Unlike a the heavier brushless ET100, ET115 and ET125 models, the light weight will have much less chance of damaging your home with crashes when flying indoors.
FRSKY is the most popular quadcopter digital radio protocol because of regular development and the availability of low cost highly effectiver receivers meaning that every quad you own can have it's own receiver without always changing in an out. A benefit to this means is that each quad can have a customised reviever for what that specific quad needs - long range with diversity and redundancy, full telemetry, the new f-port protocol, pwm output for servos or just the smallest and lightest receiver possible.
In terms of the latter, micro quad builders generally need the smallest and lightest receiver possible and up until recently this has been the FRSKY XM. This is a receiver that weights just over 1g and measures 15x10x3.5mm. Silly as it sounds but what if this is too big? In the case of my ultralight X2 Eyas (rotorbuilds build details here) this was exactly the case. The Full Speed FrSky-Nano 2.4GHz 8CH Receiver is the smallest FRSKY receiver you'll find - it is approximately half the size and weight of the XM, coming in at just 0.5g and measuring 12mm x 10mm x 2.5mm. It's worth mentioning that this is the same FullspeedRC that came up with the Leader 120 and the TX200 VTX - strong credentials in the micro quadcopter space. It certainly helps these models are designed and tested by Lewis who is a micro pilot himself rather than just a marketer.
Binding (from FullspeedRC.com)
1. Select D8 mode on Frsky remote control. Hold the bind key on Frsky-Nano receiver and connect the battery, then the receiver's red light will be always on.
2. Select the BIND mode on remote control , the Frsky-Nano receiver's blue light will flash slowly and the red light will be always on which means bind complete.
3.Enter: set sbus_inversion = off (set serialrx_inverted = on if your FC is BF3.3 or newer)on BF CLI and save.
4. Repower the Frsky-Nano receiver . The red light on it will flash very quickly which means it receives the singal from remote control
I did know that this nano receiver sent RSSI over an auxilliary channel but it was a nice surprise to find this set up out of the box unlike every XM, XM plus, XRS, RXSR receiver I've ever come across. Better still was that it was set to Aux 5 (channel 9) meaning all 4 auxilliary channels are available for control. With betaflight set to recognise Aux 5 as RSSI it is easy to add to betafilght OSD and display RSSI which is important as i'll get to shortly.
For a defined digital protocol (in this case SBUS) the only parameter to discuss in receiver performance is range. I'll be the first to admit that my antenna placement is not great but the range was probably a little less that I was expecting. When I ventured more than about 100m away in a residential neighbourhood I started dropping to about 30 RSSI. Given this was an ultralight build with an all in one camera/VTX I was not concerned beacuse this is about the realistic range of my 25mW vtx anyway. The good news is that with RSSI displayed in the OSD you at least have the tool to manage this.
I think the range is a fair limitation for this receiver. I see it being used for ultralight brushless micros or tiny whoops where you mostly fly in close proximity to yourself. It's also worth reiterating that with better pacement of the receiver/antenna I should be able to get much better range if I needed it.
The Emax Baby Hawk R is a micro brushless quadcopter that was launched by Emax in early 2018 as a follow up to the highly successful Emax Babyhawk (not r). It was launched as a 2 inch but 2.5 inch aftermarket arms quickly became available in the aftermarket and hugely improved the power to weight ratio, disc loading and efficiency. Emax themselves have now taken this one step further with the Babyhawk R 136mm (3 inch). Compared to the 2 inch version is has the longer arms with the new Avanflow 3 inch 3-blade propellers and a reduction in motor KV from 6000kv down to 4500kv although motor size is still the same 1106. Weight of the 3 inch is 86g compared to 82g. I will review the Babykawk R 136mm (3 inch) here.
Specs and discussion
On paper none of these components are especially exciting or on the hype-train. A big HOWEVER though - all are very tried and true, solid and well balanced. This means reliability and reduced cost. The each have a job to do and do it without fuss or flair. It's fair to say though that when you bring them together they are greater than the sum of parts.
Quick rambling thoughts how 3 inch quad weights
I think of 3 inch quads in 2 ways - a shrunk down 5" based on large motors and 4s batteries or an embiggened micro based on 11XX series motors and 3s. This clearly fits in the camp of "embiggened micro" since it is based around 1106 motors however it is farily unique in that the ESC, motors as well tough frame and cowling are well and truly engineered for 4s - best of both worlds as it were. By constrast my lightweight FlexRC komori (build blog is here) can take 4s but the frame would not hold up to carrying the extra weight of a 4s. Conversely something like the Furibee X140 (review blog here) is pretty gutless on a 3s where it can't overcome the 120g+ weight of the quad.
I haven't delved into all the betaflight screens this time because for the most part this is down to preference and your gear. What I can say though is that although not installed from the factory, EMAX have provided some VERY good PIDS for both 3s and 4s. Here is the link to their page or for convinience please see below:
Fly the damned thing
At the time of writing I've only run this on 2s and 3s. 2s was using a 46g 950mah turnigy nanotech battery and was very uninspiring but hey, at least it can be done! 3s was much better than I thought it would be. I used the Turnigy Nanotech 3s 460mah battery (about 42g) and got 2.5 - 3 minutes flight depending on how hard i pushed, coming down at about 3.75v per cell at rest.
The first thing I have to say about the flight is that all of these solid if unspectacular components do come together so nicely - they are all well suited which not only make for an enjoyable and reliable fllight experience but means the cost does not blow out. In addition the protection offered by the 3mm carbon-armed and cowled frame means that even after tumbles there is a good chance you can just rearm and get flying again - it is tough! The other benefit of the cowl is that it looks cool, different from the top plate/bottom plate or side cage frames that are out there.
Punch out power is ok on 3s but will hold my judgement till I get some 4s packs. understandably the light 3s packs make for great agility which is why I had a lot of fun with proximity around the small trees in the park that I have close to work.
For FPV camera performance is good - as to be expected from the foxeer arrow micro CCD. VTX is clear in the right conditions and is better than most other micros however I do undersand this can be improved significantly with an AXII ufl antenna (or the cheaper UXII). Channel and power level is easy to change via the small button but as suggested above there is no smart audio or tramp protocol to do this over betaflight OSD.
Obviously I haven't tried on 4s yet (I am just choosing a 500-700mah 4s to order), but based on the performance of 3s I think this quad is a real winner.
Emax have done a fantastic job on not getting carried away on needlessly overspeccing the quad in areas you cannot really taking advantage of. In doing so they have a solid, robust and well priced offering that I can see becoming very popular like the babyhawk before it albeit with less shortcomings. Better still the support that emax appear to be offering beyond regular customer service such as offering tuned PIDs means that community support will mean there are always going to be clever fixes and modifications that will be available, making obsolesence for this model is less likely. Make no mistake obsolesence is a real issue with quads because once the community moves away from a model there is less support in total available.
Although experienced builders and customisers will still likely want to build their own, It is very easy to recommend this as a first 'racing' micro quad becuase of it's inherent features and support. As a micro quad builder myself it's hard for me to say but this is actually more enjoyable to fly than most of my custom builds because it all comes together so nicely. For that reason it is easy to recommend this to the more experienced set that just want to fly and not fiddle with the micro electronics etc - for example if you have come from 5 inch racing or freestyle quads.
The Emax BabyHawk R is currently available from Gearbest with or without receiver. The model without receiver is $166. If I get access to any specials I'll post on my coupons ans discounts page.
I currently run a Floss 2 5" racing rig (see series of articles here) that is powered by 2205 2450kV Returner R2 variants and a HGLRC F428 stack with vtx and camera. The F428 stack has always been fiddly - VBAT pads have broken off easily and I've burnt out 1 ESC when the external cap was knocked off. Although it is still working, I quickly realised I need a very robust (read: crash resistant) system that doesn't leave me wondering if it is going to work or not for each heat I race.
I decided I wanted to replace with an all in one FC/ 4in1 esc to simplify and minimise wiring. I'm confident enough now that 4in1 escs have reached a point in reliability that I'm not worried about a failure obsoleting an entire board. For me the key benefits are:
Because of reliability I decided to go brand name and in doing so skipped the racerstar options from Banggood. I had my eye on the Airbot Asgard and underground FPV kamikaze variant for a while but for around $100 they were fairly pricey. This is when I came across the Cicada AIO F4 30A BLHeli_s for $56 from HobbyCool - about $35 less than the other options. Both the f4 flight controller with mp6000 gyro and BLHeli_S are mature technologies and I know what to expect - solid performance that can handle the latest firmware and options (Betaflight 3.3 / Butterflight 3.4 at time of writing) but will be super reliable - in summary do the basics well day in day out. The BlHeli_32 version of the Cicada AIO had just been released but is about $20 more and at the time didn't see the advantage on what it a straight up racing.
Installation was really straight forward - this AIO board has the standard 30.5mm x 30.5mm mounting pattern and paired it with a new AKK FX2 VTX. I used softmounts out of habit but in reality it's probably not necessary with the MP6000 gyro and 8k/4k gyro/pid frequency. Just a little more insurance if props or motors get donked up.
Wiring is fairly easy after removing the shrinkwrap cover from on the AIO unit. An XMplus FRsky receiver was soldered up to the easily accesible side pads and bound and the AKK FX2 vtx was installed powered by the BEC/filter on board the FC (3A @5v which is plenty). The only thing outof the ordinary for me was wiring the 'smart audio' signal for the VTX to the TX6 on the AIO unit - it is a smaller solder pad closed to the centre of the board on top, clearly labelled. The runcam micro swift 2 camera was powered directly from the VTX as is best practice for a clean video feed.
After making sure the power up was successful I updated to the latest version of BLHeli_S via BLHeli configurator and the latest version of betaflight which was 3.2.5 OMNIBUS F4 target at the time of writing. I've included screens of my specific betaflight setup below but for the most part this will be to your liking and particular motor/prop/frame setup rather than the board in particular. The one exception is the current meter details which should act as a good starting point. This was as accurate as I could get mine using Oscar Liang's method.
3 months on from install the quad is still flying well. I've been through several sets of props, 1 arm and a camera lens but the Cicada FC/ESC nor any of the other electronics have given me no issue whatsoever. Although the HGLRC F428 may have held up similarly at a push, I would not have the confidence to try new tracks with the same gusto as this setup - a concept that is less tangible but is super important to learning and improving. PIDs are stock and since I don't have particularly agressive motors they work well for me using some of the key betaflight 3.2.5 features: dynamic filtering, PT1 filter, notch filters off, airmode etc. Dshot commands are also working well: the beeper has saved my bacon in long grass several times and turtle mode works well with my top mounted battery although I still tend to be scared of it!
So there it is. The CICADA AIO F4 FC W/ 30AX4 BLHELI_S ESC which is availble for $56 with worldwide free shipping from HobbyCool is a stable and reliable solution for simplifying your electronics.
Introduction - why a patch antenna?
Recently I switched to the Aomway Commander Goggles (review here) which have built in receiver diversity. This means the receiver with the antenna attached with the highest RSSI value is fed to the displays. Aomway are well known for making a great omnidirectional antenna but a rubbish patch antenna is included with the goggles. The advantage of mixing antenna types when you have true diversity is that omnidirectional antennas will cover all directions good enough whereas patch antennas (directional) will cover in the direction the antenna is 'pointing' only but with the benefit of much less signal loss. What does this mean in the real world? When the vtx signal is coming from the directional path of the patch antenna you can go further and the signal can be better received from behind trees and other obstacles. The omnidirectional antenna will pick up all the other areas - behind, beside and in front.
What kind of patch antenna?
Since the Aomway patch was rubbish I went looking for a cheap alternative that was small so that I wouldn't have to continually take on and off my goggles. Patch antennas come in linnear or circular polarised, just like any other vtx antenna. Since I run circular polarised antennas in my 5" freestyle and race quads where I'm likely to travel further or need guaranteed reception I went with a circular polarised patch - specifically Right Hand Circular Polarised (RHCP) to match my cloverleaf and pagoda RHCP antennas on my quads. Note there are few linnear patch antennas but I have heard good things about the Menace RC Bandicoot. This would be great for micros which pretty much exclusively use linnearly polarised dipole antennas.
Why the RealACC 8dBi patch antenna?
The RealACC 8dBi patch antenna looked like it met my needs on paper and is only $7 on banggood. Definitely worth a try! It comes with option of RHCP or LHCP (I chose RHCP) and SMA or RP-SMA (Aomway Commander are SMA) which means there are options for everyone. Since the SMA connectors come out of the Aomway Commanders at a 45° angle, I also bought some 45° SMA adaptors so the patch antenna would point straight ahead.
The best test for the patch antenna was when I mistakenly left off my omnidirectional cloverleaf antenna during racing. Below is DVR footage of that run with 3 or 4 others on the track at the same time and everyone running 25mW vtx power only. One of the pilots had a defective VTX antenna and was causing video issues for all the other pilots except me. Of course this is anecdotal but throughout the day I had crystal clear video. I'm just glad all racing was done directly in front of me!
Since then I've used the RealACC patch antenna with all my quads - both with circularised polar and linnear antennas. I'm really enjoying the extra range this gives me without sacrificing portability. The Pagoda triple feed patch antennas are well recognised as being excellent but I wasn't willing to stomach the larger size and lesser portabilty. With a young family I don't get to fly as much as I'd like so when I am out I want to fly more and spend less time setting up. I'm really pleased with this little patch antenna for what I wanted.
The Flyfox 110mm is a BNF Micro 2 inch quadcopter for newcomers HobbyCool.com. I was most interested in this micro quadcopter because so far as I can see, the BNF model here is completely exclusive to HobbyCool.
The frame is based on a 3mm bottom plate with 1.5mm sideplates attached by tabs and 3d printed standoff - very similar to the Leader 120 but with a different look and more importantly, a factory micro CCD camera. The frame with hardware on its own weighs 15g and is available here for less than $10. Speaking of the camera, it looks to be nicely protected by the frame without impacting the view however only a limited amount of camera angle is available as can be seen in the image below:
Electronics are fairly typical - F4 flight control and 20A DSHOT600 ESC. 2 nice suprises I was not expecting here though - tramp control of VTX (my first in a micro) and a baromoter in the flight controler (my first altogether!). ESC uses a JST connect which should be ok although I would have preferred a XT30. Voltage drop may or may not be an issue but in practicality in all except my lightest brushless quads (less than half this weight), it is a much more robust and convinient connector.
This quad is PNP so does not ship with a receiver so I used my favourite XMPlus for FRSKY. It does however ship with a nice 550mah 2s GNB battery which unfortunately for me is still with Hobbycool since getting batteries to where I live (NZ) is getting harder and harder. Lastly a buzzer and 2 x programmable LEDS are connected and mounted and 16 x Kingkong 2035 4 bladed props with screws are included.
All solder joints that I could see looked to be good, wires were well trimmed, routed and secured and the build quality looked good.
All up weight including props, battery strap but no battery is 78g which is heavy but it's worth noting that this is in a power class of it's own with these monstrous motors.
When I first plugged in betaflight configurator in I was expecting to see a dead stock list of settings but was pleased to find some customisation - see below for a list of stock settings which included a number of modes set, craft name, DSHOT600 etc but unfortunately no custom PIDs (or rates). Prior to the initial flight the only changes I made to setting were for my receiver with RSSI set to channel 16 and my stock modes - arm-disarm; angle-horizon-air; beeper off-beeper on.
Getting ready for FPV Maiden
Even before I started FPV I could tell from the hover test that the PIDs were too aggressive by the excessive fluttering I could hear. This is to be expected because the comparitively large motors have absolute control of the motors and so the feedback loop is exaggurated. I knocked P, I and D down for all three axes to get it in the air without risk of damage but it could certainly do with some more tuning to crispen up the controls. Since it was Betaflight 3.2.0 that was installed, PIDs were easily changed via OSD.
Since I did not have the stock 550mah 2S GNB battery (which is highly regarded) I used my turnigy bolt HV 2s 500mah 65c batteries charged to regular voltage with stock jst discharge connectors. For what it is worth, radio was FRSKY QX7s and goggles were the AOMWAY commander V1s. Takeoff weight was 104g
The quad powered on without issue and I was off flying immediately. I started with the stock propellers but switched the the Gemfan 2035 4-blades after finding that they had a bit more top end through a wider blade at the tip. Power was predictably high for a 2 inch but regardless of the large motors lacked a bit compared to a quad swinging a 2.5 inch prop (e.g. leader 120, HGLRC Hornet, Mini Fight). Update: After more time with the Gemfan 2040 Hulkie 3 bladed props I found I was able to get better performance again out of these 3 bladed props over either set of 4 blades. As I suspected when I first reviewed the hulkies, their stiffness and less blades are better suited to a high power setup.
Due to the large motor size response was excellent but given I tend to have a preference for light weight over power I found that hard flying took quite a toll on the batteries. For moderate to heavy flying I found I got about 2 minutes of flight on the 500mah batteries, which recovered to about 3.73 v per cell on resting. During flight though I did get a lot of warning of battery low and land now but in reality just need to change the battery voltage hysterisis setting to be a little more tolerant - article on how to do that here. Update: 15 packs later I consistently get 2 minutes on these batteries.
It is fair to say that between the large stator height of 6mm and very high kV of 7800, this motor is designed for 2s and no more - even trying 3s did not cross my mind... not only because of the likelihood of the motor cooking itself but because you simply cannot take advantage of it with the 2 inch props - it will just make more noise and heat.
Batteries and motors aside, the quad feels like any other high powered 2 inch - powerful but certainly not floaty where you need more throttle to make it change direction. Camera performance was on par with other CCD micro cameras including the Runcam swift micro, Foxeer arrow micro, HGLRC Elf, Furibee MS 1672. Video signal was good - typical for a dipole but like that it had the option of switching by 25mW-100mW-200mW via tramp protocol in the ESC. To be consistent with other reviews I stuck with 25mW. It's worth mentioning that when the vtx dipole is laying flat against the quads as in my pictures the reception is poor. Even when I temporarily bent it up performance improved a lot, but will cover this more in my list of recommendations.
The Flyfox 110mm BNF from Hobbycool is a high powered 2 inch drone that is well built and fairly priced at $129 the time of writing. It's key feature is the massively powerful 1106 AOKFLY motors that are fast but make the quad heavy and limits battery choice to 2s, even though the electronics can take up to 4s. These features make for a fast quad in a straight line that needs extra throttle in corners to help keep a line. The downside is that battery life is shortish - 2 minutes flat out on a 500mah battery. The kit is well provisioned with 16 propellers in total and a very nice 2s 550mah GNB battery.
The FlyFox 110mm BNF Micro brushless quadcopter is available exclusively at HobbyCool.com I'd like the thank Kevin for the sample he provided for me to review.
In this review I set out to build an ultralight micro brushless quadcopter based on the 16mm FULL SPEED Baby 2S F3 Flight Tower. The goal was to get less than 40g with a full featured brushless micro. Previously I'd achieved 41g using a smilar setup with a 2 and 3s capable 20mm flytower but found that the weight penalty of the 3s battery did not give back in performance on the little 1103 motors. More details on that quad on my rotorbuilds page. Please bear in mind this is not a simple build - motor wires are extremely fragile, solder pads are small and space is super tight, even with micro components. The outcome however is might impressive but I'll get to that more later.
I won't go into detail about why I chose the other parts but will list them here:
For the build itself I shelved the stock standoffs for the fc/esc since I wanted it super low profile. Instead I used 20mm nylon m2 screws with nylon m2 nuts and m2 orings to get the height I wanted. See my article making a low profile micro stack. I had to mount the ESC upside down and the flight controller rotated 180° about yaw in order to stop esc connectors touching and limiting height reduction. I also went through the painful task of cutting, tinning, soldering and heatshrinking the ESC signal cable to get it as short as possible - not just to reduce weight but because I have so little room to work on this build. I stuck with a JST connector and a short run of 20AWG cable since the connector is much lighter than an XT30 and it won't be passing a lot of current anyway.
I'll make a quick note that I used a AIO camera VTX since for this build I decided a superior micro CCD camera like the micro swift adds too much weight for me. The CM275T is the best of the bunch for me at the moment - it is very light at 3.3g and it has standard wiring that allows for betaflight OSD. UPDATE: I never was able to get this to focus correctly so reverted back to an old Eachine TX01 modded for video in and out. I also used the ghetto antenna mod I wrote about here.
So what was the final weight? 36g! better that I was hoping especially since I know I can get another 0.5g off from a receiver swap and another 1-2g from a different camera mount. That can wait though as I want to focus on flying this now rather than building. Click on the pics below to embiggen.
Once I finished the tricky stage of completed the build, ensuring all wiring was routed to avoid possible prop strike, the flight controller was set up. This is a full omnibus f3 FC and BLHELI_S esc setup which means I get all of the best betaflight features - Betaflight OSD, Dynamic filtering, Anti-turtle, ESC beeps vis dshot command. The only issue I had here was finding the camera was NTSC rather than my preferred PAL meaning I had to move my OSD elements a little close to the centre of the screen.
Since this was one of the two quads I took with me on my Summer beach holiday I got a good amount of flying in with a chance to try some different propellers. I settled on the Gemfan Hulkie 2040 (reviewed here) but think the 1940 version of the same prop would be slightly better as the offer a little more clearance and the 2040 is slightly over-propped - a little too floaty with a big disc/weight ratio. I actually think a 2 bladed prop would be best here but cutting down a larger prop like the gemfan 3020 will mess up the geometry too much with that much trimming. I plan to try the gemfan 2035 quad blades with 2 blades removed at a later time. Just a quick note here that although in the past I found the Hulkie 2040 propellers to be brittle. Not an issue on this quad as the low weight means crashes have very little force. UPDATE: Have now tried the 2040, 2-blade 2035 and 1940. 1940 is the best prop for durability and performance. The 2 blade 2035 was ok but didn't give me the efficiency gains I was hoping for.
So how does it fly? I'm impressed. On a 2s 300mah weighing just 17g I get 3 minutes of hard flying time coming down at 3.8v per cell - would be easy to go to 4 minutes but I have plenty of these $4 batteries so it's not an issue to change regularly.
In terms of what can be done with the quad it just makes this little guy so much fun. You can fit in tiny gaps with good fine control like a whoop but the top end speed and power for acro make it something else altogether. It doesn't have the speed of a 5" obviously, nor the momentum for tricks but you can still put it where you want, when you want. What separates this from bigger, heavier 1104 and 1105 based 2" micros and more traditional 3" micros is the lack of weight makes it feel so much smoother and easy to recover rather than feeling like a flying brick - something I've felt in all BNF 2" quads 55g and up and in traditional 3" quads like the Furibee X140 (review here) and the GEP RC Sparrow MX3. So far as bro-science is concerned this is not to do with power to weight (for example the GEP sparrow has wicked power/weight with those big 1408 motors) but more to do with disc loading - the area of a 2" is very small and can only support a small amount of weight. Even stepping up to 2.5" allows a lot more weight to be carried for a simlar feel (e.g. the Leader 120). In his own rambling way Bob Roogi does a good job of explaining this further here.
After flying exclusively with ccd cameras now I forgot how AIO cameras struggle with light handling. It's not a fault of the VM275t in particular which does seem to be one of the better of the bunch, just the particular CMOS technology used in these cameras. On a good sunny day it is not an issue though and on the cloudy days it is something you can get used to. If you did want to go CCD though I'd recommend swithcing to a micro CCD, FSD TX200 vtx and the FlexRC Ascent frame for an all up weight penalty of about 8g - not my objective for this build but may suit you better depending on your application. Albert Kim actually did a build similar to this in his video here.
Coming back to this review being one of the flytower though I can thoroughly recommend it for a lightweight 2s only micro build. The only equivalent that really comes close is the HGLRC Zeus which is 2-3 times the cost and won't fit in small frames like my Eyas build, although it is capable of 3s @ 16A. I'd also like to suggest that the 1103 motors seem to be a good match - they are as light as 3g each and will not stress the little 6a ESC. I'd very much like to try this combination for a cruising micro with a 2.5 or 3 inch superlight frame to see what kind of flight times I can get but for now, this small and ultrlight quad comes with me practically everywere.
UPDATE November 2018: It's hard to imagine I've now had this almost a year now and it is still going strong many crashes later. I've settled on the Gemfan 1940 props as the best in this configuration and the Fullspeed FRSKY nano receiver with weight down to a hair over 35g. Current hype is all around the 2s whoops and (Mobula 7 in particular which I'm in the process of reviewing) but objectively speaking this build is superior outdoors because:
Here is the latest image:
Since half of the planet is currently having weather that is forcing people indoors at the moment (not me haha!) I've reviewed some All In One (AIO) camera and VTX combos. Traditionally these have been used on tiny whoop style indoor brushed quads and smaller micro brushless quads although more and more brushless quads are using slightly heavier micro CCDs as standard.
Weight is still very much the name of the game in brushed quads as you'll struggle to get a 4:1 power to weight ratio even on the larger 8520-based brushed micros. This means CMOS-based AIO cameras are still the norm because they are so light. In this round up I've gone for some of the lightest cameras I can find and best of all, 2 include video in / video out so that no tricky wiring hacks are needed to run betaflight OSD.
Note: This is clearly not an exhaustive test, I happened to have a number of AIO camera at the same time I ordered for various micros so had a chance to compare. I though the improvements over the Eachine TX01 were impressive so thought it would be work sharing.
Clearly discussion on image quality is missing here - I found the 4 CMOS AIO camera above very similar and wouldn't be able to tell apart in a blind test. The only AIO I've picked up which is clearly inferior is the VM2751 standard on the leader which is not included in this shootout. I thought this camera/vtx was the weak point of the Leader 120 quadcopter.
For a micro brushed quad without an OSD I'd recommend the LST S2. For goodness sakes it is only $9!!! Further to that it is light, easy to change channel / band / video format and small.
For a micro brushed quad with OSD or if you are after every milligram of weight savings, get the CM275T. It is CRAZY light at 3.2g and has a very convinient video/in out so that you don't need to mod your cam just to enjoy betaflight OSD - assuming your FC supports it. I know it's at odds with what I said about brushless and ccd cameras but this will be going on my Eyas X2 rebuild going for the lightest 2" possible - targetng 35g with props. Here is my original X2 eyas build on rotorbuilds if your curious.
For a brushless quad 2s and up just get the micro swift or equivalent and the TX200 VTX. The video quality is just so superior in all but the best lighting conditions. VTX can be a little tricky with band / channel display but transmission quality is excellent and you have the ability to bump the transmission power up to 200mW.
The Beebee 66 is a micro 1s brushless powered quadcopter which is essentially a brushless Tiny Whoop. It is made by Full Speed RC, the same company that produced the highly successful Leader 120. (review here). Gearbest kindly supplied me a BNF Beebee 66 to review. I was desperately hoping for this to be the brushless answer to the tiny whoop but I'm really bummed out that it just isn't. Read on to find out why.
Adding a receiver
Since this was supplied as a BNF model, it came without a receiver. I opted to use the lightest FRSKY receiver I had on hand - an XM that I'd finally figured out how to fash with the RSSI channel 16 firmware. In most models this is a matter of soldering wires to the exposed pads on the top of the flight controller. However,since the FC and ESC are part of the structure of this quad AND the FC is flipped upside down to sit the ESC connector in a manageable location, the prop gaurd, 4 nylon nuts and the flight controller itself had to be removed before I could access the receiver solder pads. Then I needed the help of a multimeter to figure out ground, +5v and signal wires. Once soldered up with a short length of silicon wire to the receiver it was easy enough to re-assemble and tuck the XM reciever underneath the canopy behind the AIO camera/VTX. Pics below of course can explain this better:
It's not the end of the world wiring in a reciever here but can be fiddly with particularly small hardware. I'd recommend if you did buy this model that you purchase with the receiver of your choice pre-fitted.
Kept it pretty simple here. Because this is quite a different steup than I am used to I retained the stock settings on Betaflight 3.1.7 that it arrived with. All I did was set an arm switch and a mode switch for angle-horizon-air. Below are the default settings from Betaflight 3.1.7. Oh yeah, receiver had to be set up too. Like most f3 boards receiver is on UART 3.
The only other preparation was pretty straighforward. The included GNB High Voltage 1s 260mah Lipo battery was easily charged using the included USB adaptor and a micro usb cable I had on hand. Only 1 set of props was included that are press-fitted on the tiny 0705 fullspeed branded (Sunny Sky made) 0705 brushless motors. I left the VTX on the default channel for the initial flight that my Aomway Commanders (review here) picked up as 5905MHz.
Please look away if you love your Beebee 66 because it starts to get a bit ugly here. After fully charging the LiHV batteryand confirming everything was working ok I armed and found the props were fouling on the TPU canopy. Minor annoyance down to the tight tolerance in the slightly flexible TPU canopy. Easy enough to bend out of the way and I was back in action.
The first thing I noticed how loud the motors are - not in idle where they are practically silent but under any sort of load. Next as part of test with line of sight attempting a 'punchout' I could clearly see the quad dipping (pitch/roll) and twisting (yaw) under load. I'll attempt to tune this out later on and will post another review if successful. Moving on to line of sight I found the flight performance dull and uninspiring. What's worse was that after just one and a half minutes flight my battery was sagging down below 2.7v - the motors were clearly very demanding for their relatively mild output. I really wanted this quad to be a success and in fairness there is a chance I could have a less than perfect unit but my experience is my experience and I was disappointed. I do have some thoughts on how to improve though and I'll cover this in my Next Steps section below.
Comparison to a brushed micro
Please understand that these comments aren't made from isolation - I've had some experience with tiny whoops based on 7mm motors (like the JJRC H67 or Eachine E011) and although these are cheap brushed toy grade quads, they offered equivalent or better power and a flight time of 4 minutes plus on the same size battery with much smoother flight performance. A quick note that I actually tried the stock battery from the JJRC H67 (260mah non-HV) and got only 1 minute flight before it sagged below 2.7v under load. After recovery it bounced back to 3.65V but this same battery give my 4 minutes plus in my E011 FPV or santa whoop.
At this point I can't recommend this quad. The performance I experienced was poor and the flight time was unacceptable. My guess it that the brushless motors do not scale down well to 7mm, at this size the brushed motors seem to be more approprate. I'd recommend going in one of two directions:
I'm not content to leave things be with the Beebee 66 and the latest version of this model (Beebee 66 lite) has shown the direction I want to go in - removing weight. I'm skeptical of getting to the level of improvement I want but with some of the parts below I think I can replace the canopy with a simple camera holder. remove the propgaurd and TPU supports and save up to about 4g. Will this make enough difference? Not sure but will report back when I'm done. Make sure you bug me about the follow up in the comments if I'm too slow! Below are some of the weights of the components I'm interested in:
The HGLRC Flame 1105 motors have been out for a while now and I've always wanted to put into a decent build. That build is covered here in my Komori review but here I'll just cover the motors specifically.
These motors are available for Gearbest for around $8-10 each making them a mid-price motor. On the bench they feel well made and smoother than the DYS 1104 motors I've reviewed previously. They have a lightweight 'naked bottom' design and come in at 5g each which is very similar to the aforementioned 1104 DYS motor even though they have a 1mm taller stator.
For the purpose of this review you will find me making many comparisons to the fullspeed branded 1104 7500kV motors that come standard on the Leader 120 (review here) because this is something of a performance benchmark and a popular model that many can use as a reference point. As above my test rig is the flexRC 3" komori lightweight frame using as fairly standard 20a ESC / F3 flytower combo and Gemfan 3025 twin blade props. Both the Komori and Leader were 71g dry.
Performance on 2s
For 2s flights I used my trusty Turnigy Nanotech 2 950mah batteries. Performance with these batteries on the HGLRC flame motors were smooth and predictable but lacked the top speed of the leader motors. This understandable as the 7500kV rated leader motors are better suited to 2s than the 6000kV HGLRC flame motors, even though the stator on the HGLRC is 1mm taller. I'd suspect this gap would be even smaller if you went with a more agressive prop like the Gemfan 3035 3 blade.
Performance on 3s
This is where I thought the HGLRC Flame motors would be most suitable and I was not disappointed. The power delivery was smooth, linnear and very controllable with a top end speed comparable or faster than the Leader 120. By comparison the leader 120 dips and feels less controllable at the upper end of the throttle. My guess is this is because the kigher kV and lower torque due to the shorter stater means it doesn't have the force to spin up the propeller to it's maximum speed like the HGLRC motor can. Later on down the track I'll try with the Gemfan 3035 triblade props as I suspect the motors still have a little more to give. I got a 4:30 flight time compared to 4:00 on the Leader 120 which leads to further weight that the 6000kV motors is more in it's ideal power/efficiency range compared to the 7500kV motor.
Overall on 3s the flight experience with the HGLRC FLame 1105 6000kV was really nice, very predictable and linnear and no sacrifice on top speed. By comparison I think the kV is slightly too low for 2s but a more agressive prop than the 3025 I used would probably be a noticeable improvement. Importantly the motors are well made, sell for a fair price of approximately $10 each and have silicon multistranded wires that make them sooo much easier to work with!
I'd recommend these for a high power 2" quad on 3s, any 2.5' quad or very lightweight 3" quads like the Komori
My motors came from Gearbest (use RC18off to get them for $8) but can also be found at Banggood or HGLRC directly.
Other parts mentioned in this review:
Gemfan 3025 propellers (Definitely recommend these for this motor)
Gemfan 3035 propellers (I'd like to try these on 2s but current draw may be too high on 3s
Gemfan 2540 propellers (My favourite prop for the leader or any 2.5" quad)
Ever since I saw the first image of the first FlexRC Ascent I've been impressed. It is a simple micro quad frame that accepts 2" propellers, is super lightweight and has a cage that is designed around a micro CCD camera (runcam micro, foxeer micro, caddx micro, furibee micro etc.) This was one of the first frames designed around these superior cameras and in my opinion still one of the best.
Dmitry from FlexRC has since expanded on this winning formula and this has given birth to the 2.5" Ascent, 3" ascent desinged around the runcam split and most recently the Komori 3". The Komori is essentially based on the original 2" with a baseplate embiggened to take 3 inch props and extra torsion supports between front and rear arms to allow for minimal flex whilst stick with thin (but lightweight) baseplate. All up weight of the frame is 15g with included hardware. Shape is a squashed x - front and rear motors are closer together than left/right motors. *Theoretically* this should mean more stability but slower movement on roll and faster but less stable in pitch.
After spending a lot of time with the Leader 120, I was looking forward to a frame that better fits the micro CCD camera and can take a genuine 3" prop rather than 2.8".
For build components I essentially transferred my gear across from the Furibee X140 (review here) where I felt the heavy frame (although durable) was letting the performance down.
After initial flights I decided the 1306 weren't suitable - performance was dull on 3s albeit and improvement on the Furibee X140 owing to roughly 30g less weight in the frame. This is when I switched motors to the HGLRC Flame 1105 6000kV (reviewed here).
The build on this was really simple - FC/ESC/VTX were all bolted on to the baseplate as were the motors. I just love the way the side plates clip on with no fuss and still had plenty of room for the 3-layered stacks. Once in place itwas easy to add the 2 nylon standoff supplied which can be used place cable ties on as additional support for receiver and VTX antennas.
@s Betaflight setup
Since this is a custom setup I won't go into betaflight setting but to summarise I went with
I went into more detail on the performance of the motors here but overall 3s paired with these motors and overal setup was excellent. My Leader 120 on 3s was always very quick but was a tad unstable and highly strung. The Komori I felt fixed this feeling of instability - flight was a lot more predictable with linnear power and no twitching. What this translated to in reality was more enjoyable less stressful flight with no loss in top speed compared to the leader. 2s on this quad is ok - not as fast as the leader on 2s but I think some more agressive props like the Gemfan 3035 triblades would be better, This is primarily a 3s quad - I have no interest in 4s.
I've not yet put a lof of packs through but have already had a reasonable sideways landing on to rough chip tarseal. From this the carbon fibre that extends beyond the motors for production has had a slight delamination but nothing that affext performance. There is however a lot of material that extends beyond the motor meaning I could file back to removethe delaminated portion. It also means the motor was well protected in the crash - not a scratch on it.
It's no secret that I am a fan of light builds - going lighter means better agility and longer battery life as well as better resistance to crash due to less mass. The FlexRC Komori frame fits my desire for a 3 inch frame perfectly - super light with frame designed natively around a micro CCD camera. The komori does sacrifice a bit of durability for it's light weight but given I fly over grass mostly I'm happy to compromise a bit of durability for weight. Since the frame is light this then allowed me to choose lighter duty motors and batteries - which makes the entire build light. As well as the benefits above, lighter motors and batteries tend to be cheaper too.
Flight characteristics were excellent andI felt the combination of 3s 450mah - 1105 6000kV - Gemfan 3025 offered a well balanced combination of power, agility, stability and efficieny (i.e. longer flight times. I think my favourite Leader 120 has finally been bettered.
This is not a typical review, there are plenty of those around. Bruce from RCModelsReview and Seth from RCAddict both do a good review on these as do many others. The aim of this review is to detail my experience moving from box goggles to a set of crap binocular goggles to a set of good binocular goggles.
When I first jumped in to FPV quadcopters in March 2017, box goggles were all that fitted into my budget and at the time the Quanam Cyclops V2 from HobbyKing was one of the better models going. I've really enjoyed my time with these - an immersive 5 inch screen, useful OSD and pretty good reception for a non-diversity receiver. The only downside for me in practicality was the large size that was difficult to stuff into a backpack and to a lesser extent the reception for short-mid range flight. Looking dorky doesn't really matter to me, I have kids so a large set of box goggles doesn't even register on the shame scale.
My first move into binocular goggles was unsuccessful. Like thousands of others I jumped on the Eachine EV100 preorder from banggood. They felt and looked good at an excellent price, the lens adjustment was great and I so wanted them to be good but they just weren't. They failed on the most important feature of all - the viewing experience. Possibly because of the innovative lens system but more likely due to cheaper optics, the field of view was tiny. There was a lot of hyperbole around the lovers and the haters but it was just too hard to see the small screen, *especially* coming from box goggles. I really hope that Banggood/Eachine get this right, there is a lot of potential to take the market away from Fatshark in particular who offer great customer service but have offered little innovation in the last few years.
Naturally I was therefore hesitant with the Aomway Commander V1, even with the glowing reviews around. The hesitation was short lived though. After speding sometime to figure out the menu options I found the field of view to be good, even after transferring from the quanam goggles which have some of the biggest fields of view on the market. The most important measure for me was that I could fly just as well (no worse anyway!) than with the box goggles - a completely different experience from the EV100 goggles.
By now, these goggles have been well reviewed but I'll cover of the points that were important to me as succinctly as possible:
Thanks to Gearbest for providing the sample for me to review and use. A link for the most up to date (revision 2) of the Aomway Commander V1 goggle is below, currently available for around $300. Check out my coupons and discounts for the latest flash sale or coupon for these.
I've now had the Furibee X140 for about 3 months (at time of writing) and have probably put 50-60 lipo packs through it. I've written this final part of the review to draw some clearer conclustions.
Part 1 review (bench) is here
Part 2 review(inital flights) is here
Minor changes since purchasing
I've only made very minor changes since purchasing, more for durability rather than anything else:
I never did get the smaller 4s packs because I ended up being happy enough on 3s. The performance of the quad was never what you would call fast and when pulling out of freestyle manuevers and covering distance I'd find myself hitting full throttle fairly often. Battery life has been nothing short of outstanding though. Even on a 42g Turnigy Nanotech 3s 450mah I had such a tiny amount of voltage sag and I'd regularly get 4 minutes of flight pushing hard. Additionally the lack of power to weight compared to my 5 inch or leader 120 quads gave me a whole lot more control - on a large race track with the camera angle set to around 45°C I was the most smooth, stable and consistent I'd ever been and was able to fly more consistently low (gate height) than I ever have before. At a guess what I lacked in top end was more than made up in smooth cornering and accurate lines. That being set it felt like a chore flying freestyle on the 3s because of the amount of throttle needed to recover. I think a freestyle experience on a 450mah or 650mah 4s would be very good.
This is a tank! On my way to consistent high speed low flying I went through a few high speed barrel rolls and the X140 took it like a champ. Other than replacing bent props (with the Gemfan Flash 3052 hopefully arriving soon) Nothing else has broken. The camera is really well protected in the frame - no mishaps there nor for any other of the electronics. Not much to say here other than this is the quad that is always running when the others are being repaired.
50-60 packs in and nothing to report - it all just goes.. Although the VTX does take some thinking to change channels and power I tend to fly this one alone so don't change channel or power. 25mW work fine where I fly. I've just seen a replacement ESC / FC / VTX stack listed here but at the current price of $ I'd just replace with the HGLRC F428 TX20 set if it came down to it.
Improvements to make
Not much left to improve on but these are on my list
I can currently think of no better quad for a beginner. The price is currently around $110 but has been as low as $80 but perhaps more importantly they build quality has been good and the quad is highly durable and forgiving. Batteries are cheap compared to a 5 inch and it is gentle on them meaning they do not get stressed and will give you good flight times. Furthermore this is very upgradable for not a lot of money. There are some simple changes here I've suggested but this quad can grow with you. Changing props and batteries will get you more speed and if you change these in combination with higher kV motors you will give a 5" a run for the money. That being said this performs just fine as is and is probably the most complete quad I have come across for anything like that kind of money.
I talk about the leader 120 a lot in comparisons and yeah, it is faster and more agile but it is also a lot more fragile and the stock camera and VTx straight up sucks. The Camera here is a CCD and performs just as well as a mirco swift or arrow. The VTx is fiddly to set up but once programmed runs well. Being more of an inermediate pilot I'm surprised how much this quad has taught me about what I should expect from throttle control (altitude management) and cornering lines.
I think this would make a great starter quad for a step into proper quadcopter FPV. Conversely for a more experienced pilot this is a great backup for flying in small spaces, especially when all your other quads are busted!
Link to the different versions:
Furibee X140 no receiver
Furibee X140 flysky receiver
Furibee X140 frsky receiver
Furibee X140 futaba receiver
Check out my discount page for the latest deals and voucher codes
Gemfan have recently released the 2540 Flash propeller to add to their growing library of micro propellers. This time rather than sticking with their 'Hulkie' naming on the 1940 and 2040 propellers, they have gone with 'flash' from their popular 5" 5152 prop.
The design is stylistically similar to the 5152 in that it is a swooping 3 bladed propeller with a pronounced wingtip. Colours currently available as below. I like the yellow as they are easy to find!
The material feels very much the same as the gemfan 2040 Hulkies which I reviewed here but the design is much more refined and so will not make any further comparisons as design will impact performance and durability more than material.
For testing I used my Leader 120. This is a popular model and I have put 80 odd packs through this one making it a good test mule. Also, I have experimented with other props like the Gemfan 3025 alongside the stock King kong 2840 for more than one point of reference.
Since this frame will fit a 2.8 inch 2840 prop there is plenty of room on a 2.5 inch 2540 without losing too much blade area. No issue installing so will move on to flight performance.
Performance on 2s
The first thing I noticed about these props is that they were very quiet. I flew in a reserve where there were several people enjoying the sun and very few people even noticed the quad flying about. The noise made was even less than the 2840s which are already very quiet. On 2s the performance was almost on par with the 2840s. I was able to hover at around 25% throttle with a 47g 950mah 2s battery and had flat out speed close to the 2840s. Cornering (grip) felt about 90% as good as the 2840s which is the grippiest quad/prop I have - even more than my 5" racing floss 2. Balance was excellent with no increase in jello at high throttle over the 2840s which have always been well balanced for me.
Battery life was definitely superior to the 2840 props. As you'll see from my pics below I got around 6 minutes from the 950mah battery with fairly heavy throttle flights as I was in a large reserve. This is about a minute more the the king kong 2840s with similar flying and comparable times to the Gemfan 3025 (although the 3025s were slower on 2s). It was an enjoyable 6 minutes too - the quad felt tight with these on.
Performance on 3s
For 3s testing I used my Turnigy Nantoech 3s 450mah 65C batteries that weigh approximately 45g.
The performance gap between the stock 2840 and new 2540 propellers were even less pronounced than on 2s. If there was a difference in performance compared to the 2840s in top speed or cornering grip I could not tell. The advantages did remain though - 2540 propellers were again more quiet and I had a similar increase in battery life: from roughly 3 minutes of hard flying to roughly 3.5 minutes+ hard flying (see below). Lastly at higher RPM I actually had less jello than any prop I have used on this quad before. This suggests they have excellent balance.
In short I got all of the benefits I enjoyed on 2s with none of the downsides.
Oddly enough I haven't had a crash worth speaking of yet. I'll update here once I've had a view and can give more of an opnion on this.
Simply put these are now my favourite prop on both 2s and 3s for the Leader 120. I can only guess that the more modern design helps get the efficiency up over the 2840 on 2s with very nearly the same top speed and grip through corners. On 3s the gap was even less and I'd struggle to tell the difference between these and the 2840s. The only real change was that there was less noise and more flight time.
In conclusion these will be my go-to prop from now on my leader 120 on 2s or 3s. The slight downside of marginally less top speed and cornering grip is easily outweighed by the reduced noise and improved battery life. Give them a try for yourself, they are inexpensive.
In part 1 of this review we looked at the specs of this quad and setup with betaflight 3.2.0. In this part I'll review the flight performance and any quirks.
Setting up the VTX
Before I get into the flight, just a word of warning that the VTX is set to 150mW to start. This may be fine for you but I like to start on 25mW as a baseline and if there are any antenna issues I know there will be less chance of cooking the VTX. Changing the channel and power is probably the most difficult I've found so far although the roomy frame at least makes access easy. I've put the original instructions below for reference but will also put my own notes as a native English speaker:
,When you power up the number of flashes of the green led indicates the channel and number of flashes of the red LED indicates the channel according to the designations to the left. Now, forget what the red and green leds mean.
Hold down the button for 3 seconds only till the red light goes off. The red light will flash once periodically meaning you are in 'channel' mode. Each short press of the button will change the channel as indicated by the number of flashes from the green LED.
Next hold the button again for 3 seconds as above. The red light will now flash twice periodically meaning you're in band mode. Now, each short press of the button will change band as indicated by the number of flashes by the green LED
Lastly, hold down the button for 3 seconds again. 3 flashes of the red LED now means you are in power set mode. Short pressing the button will cycle you between 25mW (1 green flash) or 150mW (2 green flashes). Finally holding down the button for 3 seconds again will take you out of setting mode indicated by both green and red LEDS blinking 3 times in unison. So confuse. Just set and never adjust again!
Setting up the camera - just use the stock settings
Good news: The CCD camera is actually a CCD camera and is fully adjustable via OSD. Bad news: no remote included. A compatible remote is only only about $3 from Banggood. You can argue that it should have been included but in reality the stock settings will satisfactory for 95% of the people that are likely to buy this quad. Chances are if this is not your first quad you'll have one or more floating around anyway.
Performance on 3s
Starting out using a 3s 450mah battery that I typically use on my Leader 120 (review here), I found performance to be fairly docile which is not surprising considering the low 3100kV rating of these motors. However, motors were quiet and smooth and flight performance was responsive and predicable - even with the mostly stock settings as covered in part 1. The LEDs on the back are nice and bright and certainly make it more interesting for spectators, particularly in the evenings. Flight time was very good given the battery capacity making this combination pretty usefully for someone new to FPV. However the combination of low motor kV and a fairly gently 3030 4-bladed prop felt me looking for more as an inermediate-ish pilot. I have some new props on order (3052 Gemfan flash) and I think these will make the 3s option more viable for me but I needed more instant gratification and went to 4s.
Performance on 4s
Unlike the small 3s batteries I don't have a small 4s. The smallest I currently have available is a 4s 1000mah turnigy graphene which weighs in at approx 140g. Ideally a 600-800mah battery at around 70-80g would be a better choice here - such as the 75g 4s Tattu 650mah.
Moving on though flight performance was much improved however the extra 75g weight penalty was noticeable, especially when pulling out of freestyle moves etc. To be fair though I have been flying the Leader 120 a lot recently which is a very 'floaty' quad. Much like on 3s performance was smooth and predictable but with better top end. Like on the 3s though I think there motors would benefit from a more agressive prop. The stock 3030 4-bladed props are better suited to a high-kV motor that needs additional grip from the extra bladed. With the right battery weight I think the Gemfan 3052 props I have on the way will offer the aggressive pitch along with a more modern design and greater efficiency but dropping 1 blade. The good think is though that here we are talking about changing props which are a disposable item rather than anything flawed with the frame, motors, esc, flight controller etc. They are the good kind of boring in that they all just do their job without fuss.
Flight time was pretty epic on these batteries. Check out the summary shots from my batteries below. When I got home the batteries will still measuring 3.75v per cell after resting!
On first impression, this frame is tough . I had a few crashes on some fairly hard-packed earth without any sign of issue although I'll really need more time to make a definitive conclusion. All of the components seem to be well enclosed and protected, no drama there.
This is a very well priced quad with a good performance range for a beginner stock. Although the realtively low kV motors will limit top speed, they give excellent efficiency which will translate as extended flight time and/or the ability to run a lighter/lower capabity battery with more nimble flight performance. For a more intermediate user some basic changes like a shift to more aggressive props will reward you with a solid flight experience. The equipment on board is well thought out and balanced. This means it is able to do that job that is expected of it at a very impressive price point. The frame appears to be exceptionally durable especially given the compact size and I am hopeful that this will withstand a lot of abuse.
Looking for a negative though the tradeoff of a durable frame in this case is weight. Combined the stock props performance is ok but certainly not face melting. I do have some ideas to improve on that though...
I think if you were looking to tinker, a lighter frame and the props as above would make this truly exceptional. I have some of the Gemfan Flash 3052 props on the way and think this will really improve things. Keep an eye out in my tips and tricks section as I'll review these more agressive props when they arrive.
The Furibee X140 is exclusive to Gearbest and at the time of writing is exceptionally good value at $105 for the model without the receiver or $113 with a frsky/flysky receiver:
The Furibee X140 is a traditional style 3 inch quadcopter as opposed to a lightweight 3 inch like the Leader 120. It is available as a Plug N Play (PNP) with no receiver or as a Bind N Fly (BNF) with either a flysky receiver, frsky receiver or futaba receiver.
Some of the key features of this quad are:
The box it came in is small brown and very boring which is good because on a budget quad I don't want to be wasting my money on that. What I am most happy about are the components:
FPV: Micro CCD and switchable VTX
They key points for me is that this has a real CCD camera (Furibee micro) and a vtx that is switchable between 25mW and 150mW. I'll cut to the chase and say the camera is excellent and like the HGLRC elf which also appears to be a clone of the micro swift, you would not be able to tell the difference. Combined with the VTX this 'hits' the right FPV feed where other micros miss.
Frame: Good luck trying to break this one.
Straight up the frame is a tank. It uses separate 4mm thick double chamfered replaceable indicular arms and is incredibly stiff. It has been designed in the streched - x style (less space between left and right motors than front and rear) which gives better pitch fine control and less turbulent air to the rear props in forward flight. One challenge with the streched X is that props are in full view in FPV (like the floss 2 frame) but a taller set of standoffs and camera mounts elevates the camera mostly above the prop disc line making for a nice FPV view. It is not a light fram however because of this but is crazy durable. I don't doubt gearbest will be listing arms soon but don't think they will be selling many...
Electronics: Well balanced
Really glad they went with 20mm x 20mm here, I really think this is the way of the future. I'm even trialling a 20mm x 20mm stack in my 5" race build here. Flight controller is an Omnibus F3 with betaflight OSD, a proven unit. ESC is 20a which will have no problem on this quad even if you put much bigger motors on. Best part is that it is 4s capable. Also it is nice they included a real buzzer/led combo. Buzzer is handy but not vital now that we have the motor buzzer on betaflight 3.2.0 and up. Leds are nice and connected to the DIN so there is are limitless options for how you wish for these to light up. Nice to have but in truth I'll probably remove to try save some weight (4g for this unit).
Motors: Efficient but need a 4s battery
It's a good thing that the ESC can do 4s because I feel a 4s battery is really needed since the motors are of a fairly low kV (3100kV) They should however offer excellent flight time (update in part 2 review: they do). For the record they are Ready to Sky branded 1306 3100kV motors that appear to have smooth bearings and no obvious visual defects.
Propellers: Easy upgrade here
The props included are 4-bladed 3030 meaning they are 3.0inch with a 30° pitch. This is a fairly low pitch, ESPECIALLY for the 3100kV motors. They will get you flying but when you get replacement I would definitely go for something more aggressive like the excellent Gemfan Flash 3052. I think this will be an excellent upgrade and will make a 3s battery more relevant.
Weight: Bit of a tank
This is not a light quad at 125g dry (no battery). By comparison the Leader 120 was 64g but this is a different class of micro with bigger motors, much more durable frame and superior FPV camera/vtx. In addition it will lug a 4s battery unlike the leader which is 2s or 3s at a stretch. I'd expect this to be more "chuckable" than the leader which has more "floaty" flight characteristics.
Betaflight 3.1.7 came sock on this flight controller. After looking through the settings it was dead stock without even an arm switch set up. Rather than setting up and flying on 3.1.7 I jumped straight to 3.2.1 which is the latest release at time of writing. It is a step change improvement - in particular dynamic filters. Below is a gallery of screens where I changed setting from stock. Clich through and see the captions to help with your own setup.
Early pre-flight conclusions
I really like the components on this one especially at the price point ($105 currently for PNP on the discounts page). I think it was unecessary to build the frame with removable arms and heavy 4mm thick ones at that. Micro quads tend to be more crash resistant because they are lighter so this looks like an overkill. In saying that it should be VERY VERY durable and should offer good flight times with the more effcient low kV motors it has. I'll comment after part 2 of this review on mods but I have a few in mind that should really make this move.
Link to the different versions:
Furibee X140 no receiver
Furibee X140 flysky receiver
Furibee X140 frsky receiver
Furibee X140 futaba receiver