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Best place to get a "REAL" 750 + watt motor

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Best place to get a "REAL" 750 + watt motor

Old 11-18-10, 11:38 PM
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John Phoenix
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Best place to get a "REAL" 750 + watt motor

I spoke to my e-bike company guy and he admitted to me that the motors are really 500 watt motors that are designed to be safely overvolted to 750 watts. ( they changed all the internal wiring to heaver wire)

But what say I want to get a real 750 watt so I can overvolt it to 1000 watts - how do I know what motor I am really getting when anyone can sell any motor and make any claims they want?

The law here says a non registered motored bike can do up to 25 mph. It says nothing of volts. so I should be able to get away with 52 or 60 volts in a true 750 watt motor ( to stay in compliance with the law) as long as I do not go over 25 mph on city streets.
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Old 11-19-10, 09:52 PM
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SergeSmArt
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As far as I know - the speed limit in USA is 20mph... in New York we can use e-bikes with up to 1000watt motors .. so .. I deside to order Rear 500 watt hub here:
https://www.ecocycleshop.com/catalog/...e-motor-kits-0 and if I like it and will need to more power I will add FRONT 500 watt nub motor ...

This is for this kind of bike-horse --> LOL ))
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Old 11-19-10, 11:44 PM
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arkcom
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You could try to rewind an existing motor. Count the number of turns when you take it apart and try to put back at least 50% more. Check out the Electric Motor Design forum at RCGroups for some general motor building info.

Of course it might not be worth the effort or really technically legal.

Where are you going to find a 60v motor controller suitable for an ebike?

Edit: Opps, I guess that's what your guy did. Anyway, I think these motors in general could handle a couple thousand watts. I mean, they're really quite huge.

Last edited by arkcom; 11-19-10 at 11:47 PM.
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Old 11-20-10, 02:16 PM
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John Phoenix
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Originally Posted by arkcom View Post

Edit: Opps, I guess that's what your guy did. Anyway, I think these motors in general could handle a couple thousand watts. I mean, they're really quite huge.
I know this company uses heavier gauge wire than what is standard with this motor, but I do not know if they gave it more windings.
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