You are reading a single comment by @PhilDAS 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.
@PhilDAS
What's the frame?
Could it be that you're using a seatpost which is too small?
If you were, it'd pinch the top of the seat tube making it taper in towards the top and popping the collar off