My problem is slightly different than yours. My car works great until it shuts off. I let off the throttle and hit the brakes (set at 25%) and it slows down properly and will act normally after. It seems that it resets itself within a second of shutting itself off and will run normally again...
Motor, ESC and slipper are cool to the touch before a run and still cool when the car gets back. Running a Gens Ace 6100 mah, 2s2p, 130c battery. Stock electronics, 76 spur / 23 pinion. Also does it with 84 spur / 24 pinion.
Could the ESC not take the current draw and be shutting down?
I have a Losi 22s drag car that lately is shutting down about 100' into a run. You can hear the motor shutoff and see it in my GNSS. It powers back up after about .5 seconds and the brake will apply and I can drive it back to me. This is an intermittent problem although seems like it's...