So I just got a new e-maxx and used the 20/68 gears as listed on the box for 4s lipos. I'm concerned with how hot the motor is though, esc and batters don't even feel warm but motor will get too hot to touch after 10-15mins or running. Does that mean it is undergeared? This was mostly off-road running with a couple high speeds down the street.
Traxxas page states "Larger pinion gear/smaller spur gear combinations are for high-speed running on hard, smooth surfaces only."
So I'm confused. If hot motor means undergeared then I need a larger pinion or smaller spur gear, but that's only for off-road?