What's in the kit
It's a surprisingly complete kit, including all the essential plus many extra that a builder may want - zip ties, spanners, silicon pads, multiple straps etc - it's all here and listed below. The parts you would expect are in black, the parts you probably would not are in red
If this is your first quad you will need some extra gear to get flying:
The build process.
I wont repeat the build process here, AndyRC did a fantastic job in his videos but I will provide some recommendations and tips based on challenges I found during the build.
Since there was no real customisation worth keeping I chose to upgrade to the latest betaflight and start settings from scratch. Receiver is in UART 1 and smart audio on UART 2. For PIDS I chose stock with I-term increased 50% on roll, pitch yaw since I-term relax was on. Dynamic filters on as per default. Increase gyro/pid loop to 8k/8k and that's about it.
Initial thoughts on the build pre-flight
After the setup and build I thought that the motors were just awful. They had horrible wires with acrylic insulation and laminations on the wire itself making it a bit of a pig to solder, certainly compared to regular silicon insulated motor wires. Furthermore the bearings sound horrid when idling. How did this translate to flight? It didn't, it actually flew a lot better than I was expecting. When I first saw the specifications I thought the motors were ridiculous - much too big of a stator and a ridiculously low kV even for 4s. Well the kV combined with a larger 1606 stator is actually fine offering resonable power on 3s and 4s with suprisingly good efficiency... more on that below. It does pay for it a bit in weight but not as much as I though it would.
Just to get the ESC warmed up I started with 3s batteries, particularly the awful betafpv 850mah packs which just have a riduculously low c value. For a reasonably large capacity these were just unflyable in my Fullspeed leader 2.5 as reviewed here. I was then pleasantly surprised to find that not only did I get decent battery life with these in the tyro79 (4-4.5 minutes with fairly heavy throttle), I also had more power than I was expecting and certainly enough for a beginner to get to grips - enough to recover from big dives, power loops etc. If you already have 3s packs between about 450mah and 850mah I would recommend using them but if you are buying new please just go for 4s even if you are a beginner: read on...
After I was comfortable that the build was sound on 3s I went for 4s (I used the CNHL ministar 4s 650mah which I can recommend). Everything felt sharper and faster and the speed was much improved. The best improvement however was the response: the ability of the quad to react more rapidly to stick inputs. I would recommend that even for beginners you go straight for 4s with this quad. There are easy ways to limit throttle like I wrote about here in order to hone your skills, lessen the chance of accident damage and make your flights last longer. I just wanted to point out again that between the noisy bearings, odd stator size and kv choice that these motors would be a disaster but combined with the rest of the package here are surprisingly good. I still have concerns about longevity and crash resilience but at time of writing I am 60-odd packs in and have yet to encounter and issue. beyond broken props and 1 x broken battery strap - very much consumable items anyway.
Now this is where I have confusing results. On the first 30 or so flights the camera was adequate - I could see colours fine but more importantly the transitions from light to dark were quite manageable. This can be seen in the DVR below.
I cannot remember if there was a crash or some event but since then the light handling has been awful - I cannot see in shadows at all, I can only fly on very sunny days with no clouds. Cloudy days blow out the image and make it practically unflyable.
This is interesting to me because these help explains the contrasting reviews I have watched. AndyRC had results similar to my first 30 packs - adequate light handling and colour reproduction whereas UAVfutures has the same as my next 30 - practically unflyable. I would suggest the buy should be aware of this likely issue and think if spending another $15-20 on a good camera like the Foxeer Razer or Foxeer Arrow Micro Pro would steer you towards another quadcopter. Maybe, maybe not... with a good camera it is not a bad little quad - not perfect but not as bad as the price might suggest.
Conclusions and recommendations
There's no doubt that at retail price the tyro79 is MUCH less than anything similar although it does come with some clear caveats
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Spare parts linked below:
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