in my opinion if the gearing (FDR) is low (for high speed) and the motor is not matched to that configuration, it will draw a very high current and drain your battery too fast over its C rating..... this can burn your battery and overheat the esc fets and heatsink to the point of melthing the case.
Last edited by Wile E Coyote; 04-04-2011 at 04:53 PM.