That's not one I've come across before. Are the bb cups on the old and new bb the same depth, i.e. the bb shell might not be threaded deeply enough for the new cups?
@andyp 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.
That's not one I've come across before. Are the bb cups on the old and new bb the same depth, i.e. the bb shell might not be threaded deeply enough for the new cups?