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Join Date: Oct 2008
Location: Frankfurt, Germany
Posts: 1,544
Bikes: Focus trash find commuter, Eddy Merckx Corsa, BP Stealth TT bike, Leader 720 TT bike, Boardman Comp Hybrid drop bar conversion, Quantec CX budget cyclocross build, SerottaNOS frameset ready to build up!
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I have a folding bike and also ride an e-bike with the Bosch mid mounted motor.
You definitely donīt want to be using the Bosch MMM for a folding bike application, itīs just too bloody heavy.
Go with a hub motor and a sleek integrated battery. Have a look at the way Cube integrates the latest e bike batteries on the downtube of their E-MTB range.
If you use a smaller battery (200wH?) you could maybe fit it into the shorter downtube of a folder.
Best of luck.