Bike Forums - View Single Post - Internal gear hub with a hub motor?

12-02-07, 05:48 PM

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Saltydawg

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Quote:

Originally Posted by JeanCoutu

http://sram.com/_media/techdocs/Spar...lDkSv12_05.pdf

Sram Sparc is a 5 speed hubmotor, don't know if it's brush or brushless.
The motor part is singlespeed and geared.

Dahon Roo El is equipped with this thing

The problem with that one is it's only 200 watts and 16 volts. That doesn't seem like enough power...

Does that motor use the bicycle's gears? I would think it would, but I can't really tell if they are only for pedalling or if the motor uses them too.

If that uses the bike's gears though, it would be perfect if it had enough power to move a heavier guy like me (220 pounds). Based on what I have been reading here, I think I need at least 500 watts (or more) and 36 volts (or more).

It's good to know that these things do exist though. Maybe there is one out there that has the power requirements...

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