Syndrome if the out put of the motor is a 33mm roll out? You may be able to push 34 or 35. But your pushing it to a 40. The taller roll out gets there slower. Therefore draining the power of the battery. I know its a lipo but its getting over worked. Like I say why gear to the moon to go faster? Just throw in a faster motor. And gear down.
Qoute:
Its not how fast you go! Its how fast you get there.
