You are reading a single comment by @Alexnharvey 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.
@Alexnharvey
I suspect that's because of perspective and/or distortion from the camera lens.
It doesn't matter too much though, the measurements you've taken are good enough.
You must either move the sprocket outwards or the chainring inwards by a few mm. For example, if the chainring is on the outside of the spider, you might get fairly close by moving it to the inside. Other solutions would be a shorter bb axle, different crankset, dished sprocket, spacers, &tc. https://www.lfgss.com/conversations/130300/newest/