ElectricMotorcycleForum.com
Tech => Home Brew => Topic started by: Gregski on September 06, 2011, 10:47:16 AM
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First a little background. In 2009 I set out to build a 72 volt lead acid battery powered motorcycle. At that time the Etek motor was no longer available. So I had three common brands to choose from not counting the D&D which I call the Blue Motors. So the choices were the $2,000 dollar LEMCO, the $1,000 dollar Perm PMG-132, and the $500 dollar MARS ME0708 or ME0709. I ended up buying the ME0709.
Since then I decided to settle for a 48 volt system (for now at least) because of difficulty I was having shoving 6 batteries into my bike, and more importantly cost. For example you can land a used 48 volt golf cart controller for $150 where a new 72 volt one will run you three times that. I say new because golf carts mostly come in 36 or 48 volt configs, that I have seen anyways so most likely you are forced to buy a new controller to build a 72 volt system.
Anyway my question is would I have been better off with the ME0708 as it revs up higher at 48 volts?
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The 09 is higher power, lower rpm/v but much better torque, imo the 09 is a better buy for motorcycles, just adjust your gearing to suit.
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What added benefit would the $1000 Perm PMG-132 motor give to justify that cost? I'm doing an EV conversion and want to know what the differences are in the $500 motors to the $1000+ motors.