I want to know what Voltage range it can handle... 54 too low? 72 too high?
With aftermarket controllers, Bafang's m620 motor, reputedly handles 70 Volts quite happily? With slightly more Newton-meters of torque per Watt, & less heat buildup per Watt, than at 48 Volts, 60 Volts sounds reeeeally...