Testing out my converted Schwinn Axum 29er with a BBSHD 52v. Not really a speed demon but a mountain climber beast. Derailer needs a bit of tuning also need to shorten the chain for the high gear. The Bafang came with a 46t chainring but will be downsizing to a 38t pretty soon. Had a couple BBS02's from the past and loved them all!