Temps on the motor shaft?

[SpEEdyBL]

Sometimes the rotor magnet can heat up. The same thing happened to my 380c 9t motor. I found out that it was the rotor because I ran the motor for about 30 seconds, opened it up and the rotor was warm. The rest of the motor was cool. I think this is due to iron loss or inconsistancies in the rotor's magnetic field. Im not certain though.