You are reading a single comment by @ffm 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.
@ffm
I can't see why it would matter what type of bolt you use. If the sides of the original clamp are touching (as they appear to be) and it's still slipping you should probably double check that you've got the right diameter seatpost in. Otherwise I guess you'll have to cut a wider notch in the seat tube to allow it to pinch up more.
P.S. The black thing at the top of the photo is a light bracket and nothing to do with this problem right?