Reply to comment

March 18, 2020, 11:54 a.m. -  EVRAC

I believe the ideal design for a DH bike is a two-chain setup with a dedicated gearbox at the high-pivot. However, there are compromises with using an off-the shelf gearhub as a gearbox: It's wide (135 OLD, plus axle nuts), it's not ideal to package, and unlike every other gearbox it has a fixed axle and a rotating housing. So far nobody has designed a dedicated gearbox for high pivot bikes, so I did. Here's a video (in very poor quality) of the final presentation of my research project: [](

Post your comment

Please log in to leave a comment.