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Old 11-27-2018, 11:12 PM   #14 (permalink)
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Originally Posted by cRiPpLe_rOoStEr View Post
Well, that engine was not too big, but IIRC it was quite low-revving.
The smaller motor does weigh a bit less. IMHO it is more important that it fits into a smaller space.

The motor will have a certain rating for 1 hour or 2 hour use ... likely what I'd use for a conversion ... the continuous rating would be lower. But the extra torque for accelerating would be less, so running through the gears may make it more fun to drive.

An 1800 rpm, 4 pole, AC induction motor used in industry has a minimum current ... just spinning with no load .. around 1/3 amps. I have not measured .. or read about .. any similar minimum current on AC motors used in cars. ASS U MING (not a good idea) that there is a similar minimum, there may be a marginal advantage to using a smaller motor. It might be hard to separate the contributions of lower weight from lower max rated current in real-world testing ...
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