Originally Posted by GO-RIDE.com

I've had the same cool running results with my Novak GTB and 6.5 (5900kv) combo (46/12-13 gearing). I'm running truck tires (2.2 Panther Switch Clays) and driving really hard on an indoor track. Lots of throttle and up to 20 min. runs (4800 2s lipo). I don't get any heat. The motor is warm (no heat sink), but definitely not hot. What I do notice is a good sized area of the chassis, around the motor and motor mount, gets a bit warm too. It seems the aluminum mount and chassis work as a large heat sink.