I have an Arrma Senton 4x4 that I upgraded to brushless with a GoolRC combo (and 27t pinion 91t spur). It would randomly stop when running full speed on 3s after running for about 20 sec and after 30 sec it would run again. I figured it was overheating but I touched the motor and esc and they were barely warm. Anyway my friend got the front left of the truck run over and now the esc (which wasn't touched in the accident) will turn on but it won't sent power to the motor for more than an instant, so I bought a BLX100 esc (same goolrc motor). It has the same problem, so I guess it has to be the motor, but it works fine so I don't know what it is. Does anyone have an idea?