i think you put it in before pushing the axle through as the axle has a fixed collar/washer that is too big an ID for the cap to push on over
You are right though about the cap having to be on before the axle.
@3c70 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.
i think you put it in before pushing the axle through as the axle has a fixed collar/washer that is too big an ID for the cap to push on over