You are reading a single comment by @dicki 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.
@dicki
bolt centre diameter
the distance from the centre of the spindle to where the chainring bolts go
i guess it all relates to the length of the spider arms on the crank