The design of this Drive Kit has been heavily influenced by the work that Ron did with his 750W Chain Puller. After studying his work, and spending some time figuring out how it worked and what parts he used, I decided to design my own kit. I briefly considered buying a ready to install mid drive kit, but non of the ones I found seemed to meet the sweet spot between quality and price, and I like building stuff myself.

My basic idea for the build was to make exclusive use of sheet metal, 3d-printed and off the shelf parts to keep the cost of the mechanical part of the build as low as possible, with no CNC-machining and no welding. In the same spirit, all electrical component had to be cheap repurposed off-the-shelf parts. My aim was to build this kit for about 1000€ with batteries included (no pun intended).

After a couple of iterations, the design converged to what you see below. The kit will fit a bike with a 83mm BSA bottom bracket. All electric component, including batteries and controls, are integrated in the kit. The batteries can be easily removed for charging, by swiveling the mud guard plate.

The central piece of the kit is a Neugart PLE60 planetar