Stealthy Road bike
Interesting article and thread about building a stealthy (not tm!) road bike with a Bafang SWXH rear hub motor. Kepler's running about 750w-1Kw peak through this nominal 36v-250w motor. And using anything up to 18s of Lipo from Hobbyking. One of the really neat touches is to mount the controller below the bottom bracket where it's hidden by the chain ring. The battery is hidden in a luggage bag. And most of the wires are either hidden in the frame or behind covers or chain protectors.

His only problem with the motor has been a locked up clutch. One of the comments on the thread suggests adding ATF (7-10w oil) with a syringe through a disk mount hole to deal with a similar issue.

I really like the idea of taking a 700c road bike with disk mounts and adding a 36v kit using this motor, but instead of the kit controller using one of Lyen's modified 6Fet controllers to run a 48v-10AHr battery and 15-20A peak. A 36v motor using 48v gives the extra speed. 48v at 15-20A gives the hill climbing ability and speed maintenance. The target is a speed average of 22-25mph and a no-load speed of about 27-30mph where the power drops off. That may mean getting a motor designed for a 26" or 24" rim and lacing it into the 700c rim.

http://www.electricbike.com/kepler-super-commuter/
http://endless-sphere.com/forums/viewtopic.php?f=6&t=47139
 Kepler's Carbon "Super Commuter" »
With all these sexy, sleek, and expensive production bikes hitting the market in the last 6 months (Specialized Turbo, Stromer ST1, Neo Jumper, Currie Eflow) it is tempting for the home builder to......

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[ 02-May-13 9:27am ]