What's the smallest 144bcd ring out of interest?
42 to be safe, some 41s have been made but you may have to shave the spider to get the chain to clear it.
@gbj_tester 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.
42 to be safe, some 41s have been made but you may have to shave the spider to get the chain to clear it.