You are reading a single comment by @edscoble and its replies.
Click here to read the full conversation.
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
edscoble
Just removed my drive side Middleburn R01 on UN55 for a clean and found this washer behind. I don't remember installing it and can't see what purpose it serves, being a square taper BB it can't be for chain line... Is this likely to be part of the crank assembly or the BB, and what's it for?