I have little knowledge on how electric motors really work. I have no clue on whether an electric motor can overrev. Read below for the explanantion on nitro engines.

I like to set-up my Trex to a certain RPM and leave it there. I do this checking the temperature of the motor, battery and speed control. If any one of them gets too hot, I back down the headspeed. Longevity is the name of the game.

I do the same thing on my nitros and gasser. Fuel engines can be overreved and you run the possibility of damaging the internal components of the engine. Understanding where the peak performance of an engine / motor is, will prevent it from damaging itself.

When a helicopter explodes in your face because you were running too high of a headspeed you will understand the use of the data. I know some people are running 3000 rpms on TRex 450's and metal heads. Go too far over the limit on a bigger helicopter's plastic head and you will remember this thread.

Rafael