If you want to get really accurate, measure from the inside contact points of each then add half the diameter of the axel and half the diameter of the BB shell. (Instead of estimating the centre of each)
@dbr 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.
If you want to get really accurate, measure from the inside contact points of each then add half the diameter of the axel and half the diameter of the BB shell. (Instead of estimating the centre of each)