You are reading a single comment by @dubtap 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.
@dubtap
ERD isn't the inner diameter of the rim its the distance between the seats the nipples sit in. So with a 12mm nipple that is showing 6mm or so of flats you have another 6mm of nipple inside the rim so 6mm x 2 = 12mm + 590mm rim diameter = 602mm ERD