[suicideneil]

Yeah, that is an annoyance I must admit, and changing the voltage/gearing will result in a motor spinning way outside its optimum efficiency range, which for the is somewhere around 35,000rpms. The stock motor will be great on 4s, fast on 5s, but probably too much on 6s to stay cool during a long run/race/bash session. I dunno, but Im sure Castle had their reasons (price point to reach and such).