You are reading a single comment by @emab 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.
@emab
chain / chainring motion (i'm guessing). SB has a little article about them with more wonderful pictures
to the wounded casualty, get better soon