[rchippie]

As the title says . I was running a novak xbr esc with a ex 13.5 & trak power lipo's . My car is a tc4. I was running a 31/66 or 5.3 gear ratio for the first race . The temps were 175 at thermal . the second race i ran a 33/66 or 5.0 gear ratio the temps stayed the same & has a stutter at slow speed . So i tried a 29/66 or 5.8 ratio during practice the motor got hot quick & had a stutter at slow speed . The car had a stutter untill it got up to speed then it went away . But it came back when i slowed down to turn . I just took the motor apart the rotor still seems to be magnitized as it picks up the screws that hold the motor together with no problems . I switched to my speed passion 17.5r after & had no problems . So i know it's not the esc .