E bike conversion with belt and pulley

thingiverse

Update Jan 2018. After numerous attempts to get a belt-driven ebike working, and having at least two belts break, I have concluded that it's simply not worth the hassle. Just opt for a hub motor and avoid all the headache and wasted time. ---------------OLD description below------------------ This is a parametric version of the pulley used in StatonFrames' pulley design. Now you can choose the number of spokes and locations of the zip ties to suit your specific bike's needs. The conversion process is extremely finicky, requiring meticulous attention to detail. I strongly recommend printing out a profile test of the pulley before committing to a full print run to check for fit. Be prepared to spend considerable time on this project. I have also revised the motor mount design, although I am not entirely satisfied with it at present. However, it may be suitable for others. The plastic motor mount flexes excessively, so I switched to a metal motor mount with plastic clamps to attach to the frame tube. Photos will be posted soon. The motor mount was created using Autodesk Inventor software. If you want to modify some parameters, you'll need access to this software. Additionally, there is an optional motor fan available to improve motor cooling. The required hardware includes: * 4 x 2 1/4" 5/16 bolts or M8 metric equivalent * 1 x 5/16 bolt for bearings (length dependent on the number of bearings used for the idler) * 2-3 x 608 bearings * 5/16 washers and nuts * M4 bolts for the motor (typically included with the motor)