[SpEEdyBL]

The 3.5r went nearly 80 mph on 2s at the fastest rc-car challenge. Novak actually answered why a wider rotor isn't better. They said that the bigger the rotor, the smaller the airgap between the stator and the magnet, which causes the iron core to become oversaturated, thus producing more heat and lower efficiency. In other words, you would need a bigger stator in the novak hv motors for a wider rotor to be affective.