Spit on it. If it deosn't boil, you're fine.

I've yet to see a GOOD motor get hurt from high heat. Maybe the rotor will start to get a little weak after time, but I haven't seen a stator poof yet.

I've pulled my Tekin 2050 off the track at least twice with a drive train failure, boiled spit immediately. Still runs great, maybe next season I'll get it a fresh rotor.