Quote:
Originally Posted by Piotrsko
Why even care if the motor spins or not? Not looking at a lot of power consumption on a freewheeling armature if the field is disconnected, just bearing and drive gear loss.
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Eddy current loss is greater than bearing losses in a permanent magnet motor and it's a big reason Tesla went with induction motors.
You also have mechanical strength limitations on the rotor.
A freewheel hub with a small motor geared very short is not a bad idea.