motor temps

[tonka truck]

Question for anyone that answer. Just been having great fun at the local bmx track for about 20min, but forgot to check temps of lehner 4200 (basic) when I came in v. hot only able to touch end for 2 sec and actual end shaft that buts out was v. v. hot.

problem once off? what do high temps do to the motor? and gearing it down?? at present 17/88 or just reduce EPA on Tx so that not as much top speed?

thanks