Originally Posted by
tegnamo
Amusingly, this actually makes sense, because I see on other vendor sites the same basic kit but rated at 250W.
Roughly the same motor. The difference is the motor speed.
For a 36v and the same 24v motor to have the same 200rpm, the number of windings in the motor are different.
Voltage = speed. If you change the voltage, you change the speed (unless you also change the windings in the motor)
36v and 48volt are pretty close to each other. Something that is sold as a 250rpm 36v motor and as a 330rpm 48volt motor is typically going to be exactly the same motor.