safe
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- Mar 28, 2009
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The motor you showed on the first page...
The newer motors are way better than those old style stamped steel pieces of garbage.
It did get me to thinking about actual Induction motors being used for ebikes even if those older ones are of low quality.
The main point (for me) is the shape of the powerband and not so much peak power or peak efficiency. I know I'm off in a sort of weird direction with this obsession about a racing class that is given an input power restriction of 1000 watts, but once you get past the concept and once you agree that the "game" would be to translate the 1000 watts into the widest powerband possible, then the Induction motor makes sense.
I wonder if there is a company out there that makes specialized small Induction motor of really high quality for something like the military or NASA. They might not advertise what they make, but just getting a look at what the best professional minds can come up with would be educational.
If anyone knows of the existence of high quality small and lightweight Induction motors that put out about 750 watts of power please post something about it.
Recumpence, what is your opinion of Inductance motors being used on ebikes? They could be nearly identical to RC brushless motors with the only exception that the rotor creates it's own "turbocharger like" feedback for it's magnetism verses the fixed magnetism of the permanent magnet motors. Efficiency is then based on being at full throttle and not rpm. (a big difference)
What about trying to hook up an RC system (ESC) to one of these Three Phase Frigidaire motors?
It would work wouldn't it?
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Alternatively...
What if you took a RC brushless motor apart and replaced the permanent magnets in the rotor with a squirrel cage Induction type rotor? Then you could see what it felt like as a difference.
Maybe the secret to the ebike Induction motor is to start with an RC motor and modify it?
http://en.wikipedia.org/wiki/Induction_motor
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