could be a washer on a string in the seat tube.... did that to a guy once took him months to find out what it was.
@chris_crash started
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.
could be a washer on a string in the seat tube.... did that to a guy once took him months to find out what it was.