You are right about this. This article does a much better job of exploring friction drives on bikes. https://www.electricbike.com/friction-drive/ https://www.

You are right about this. This article does a much better job of exploring friction drives on bikes. https://www.electricbike.com/friction-drive/ https://www.electricbike.com/friction-drive/ The Kepler drive is the best design I've seen and the build/design thread on that shows you all the issues and challenges. It's quite impressive. https://endless-sphere.com/forums/viewtopic.php?f=28&t=25645 https://endless-sphere.com/forums/viewtopic.php?f=28&t=25645