In terms of gain ratio , it's equivalent to using a 90" gear with my normal cranks.
@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.
In terms of gain ratio , it's equivalent to using a 90" gear with my normal cranks.