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Bang for buck RC Car reviews and budget upgrades can be found here. The focus is on maximising fun and minimising cost

Better brushless esc CONTROL - budget program card For Racerstar / Surpass / GoolRC

29/4/2020

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This review and advice article covers the use of the surpass hobby/racerstar/goolrc brushless ESC programming card which can be used on most in not all power systems from these suppliers. It is a simple <$10 device that allows you to easily change the parameters of the ESC - how fast power comes on, how power braking is and much more. 
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One of the easiest ways to upgrade your brushed RC car is to change the brushed motor and ESC with a brushless ESC. If you are lucky like me the drive train (gears, differentials, driveshafts) are designed to take brushless power but even if you don't there is a way to tame you power and still get the benefits of fast acceleration, higher top speed and better battery life. I've used budget Surpass Hobby (also branded as Racerstar) systems on both a large 4x4 SCT brushless upgrade here and the very popular WLtoys 144001 brushless upgrade here and can confirm the programming card works for both
There are several cards that can be used to program these ESCs but the one I recommend is the Racerstar LED Program Card that works with all of the ESCs and motors branded as surpass hobby, goolrc, racerstar and probably more. 
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Programming card works on my ultimate brushless upgrade guide for the WL Toys 144001 (2838 motor and 35a esc)
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Programming card also works on the Surpass 3650 motor and 60A esc combo I reviewed here
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Here is the racerstar program card you want that works for Racerstar, GoolRC and Surpass Hobby ESCs
In order to use the program card disconnect the plug that connects the ESC to the receiver, plug it into the program card instead, plug in your lipo and turn the switch on. The leds will move through a light sequence and rest on their current setting. The arrow buttons allow you to highlight the parameter and settings you wish to adjust and the "programme" button allows you to set that adjustment. Reset changes all settings back to default. Easy!!
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Closeup of the Racerstar program card adjustable parameters
There are 5 sets of parameters that can be adjusted using the programming card and Ill run through those now:
  1. Low Voltage Cutoff. If you are running Lithium Polymer Batteries (Lipo) then you will want to set this to 3.1v. This the minimum I'd want to run it at (the maximum allowable with these ESCs) What this means is when you lipo battery gets down to an average of 3.1v per cell, the esc will go into limp mode to protect the battery. Going lower will damage your lipo battery if you rely on the low voltage cutoff. 3.1v was the default setting on my setup
  2. Start mode.  Soft, medium or strong reflect the 'punch' you will get off the line - technically the peak current the ESC will allow to pass through to the motor. Strong will pull more current, stress your drivetrain more but you will have some pretty violent acceleration. Soft will ease this acceleration but put a lot less stress on you battery and drivetrain. Adjusting this to soft will really protect you car if it was not designed for brushless power. Medium is fairly self explanatory and was the default setting on my setup.
  3. Max. brake force. This is the peak braking power your ESC can provide. Increase for more breaking strength on a grippy surface or decrease when you loose traction/control on a slippery surface. 50% was the default setting on my combo
  4. Max reverse force. This is the maximum reverse power available. 100% is means that if you use maxium reverse on you transmitter, you car will go as fast backwards as it is able to go forwards! I turn this down to 25% because you only need as much power to get yourself out or away from an obstacle. 50% was the default setting on my combo
  5. Neutral range. This is the 'dead zone' before the ESC registers a command. Another way the think of this is how far you have to squeeze the trigger before the car starts moving. I like to tune this to the transmitter for control. Most 2.4ghz transmitters are very accurate so you can turn this down to 6% if you wish. 9% was the default setting on my combo. Note: although it is in the same line, the 'working state' field says that the program card is working and is not a parameter of Neutral range.
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Low voltage cutoff, maximum reverse force and neutral range will likely never need to be adjusted again once set as there are clear 'best' settings here.

​Maximum brake force could be changed if you switch the same car between high and low grip surfaces e.g. gravel vs tarmac or carpet where the high grip surfaces allow you to have more braking power available without losing traction. But the most important setting available I believe is starting power (also called punch). If you have a car with and older or weaker drivetrain designed for brushed motors then you will definitely want to set this to "soft". This will limit the maximum current the ESC allows between battery and motor - this is always during heavy acceleration and this is where the impact will be noticed. For this reason it is also good for protecting your ESC if you are having overheating issues.

You will probably find acceleration is still much stronger than the brushed setup it replaced plus you get the benefit of top end speed and efficiency. Conversely if you have a tough, reliable drivetrain with an over-specced ESC then the 'strong' setting will be your best chance of wheelies and skids - impressing kids in the neighbourhood 🤘💪

This Racerstar programming card for Surpass Hobby and Racerstar ESCs is a low-cost upgrade I definitely recommend - everyone runs their car in different conditions with different style and so this is a great way to customise performance to suit you personally.
​Thanks for reading, if you found this article useful please feel free to like or share, the facebook links below directly link/like this article. Links are affiliated and help me buy the bits I need to produce this type of content. If you are looking for quads or parts check out my coupons and discounts page which I keep updated with only the parts and quads I like at a proper discount
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