That quote at the end about how hard the rock is in Tennessee really sent me. Worth a pause to read the whole thing.

I’m not sure a friction roller is that great of an approach nowadays

Also, I don’t love that there’s not a single picture of the system installed on a real bike, nor any audio of it running next to a middrive e bike, or even a hub drive retrofit kit

Edit. Oh I missed the install video. That is surprisingly small!