What Ted said. Also, https://www.sheldonbrown.com/gain.html
Chain line just means taking the best shot at keeping the chain straight. For a single speed it's easy - front chainring should line up with the rear gear. For multi-speed derailleurs it is a best guess. There are standards. Road chainline is 43.5 - 45 Cm measured from the centerline of the bike. That's what the front derailleurs are designed to move the chain around. MTB chainline is approx 47.5 to 50 Cm. On the rear cassette, it is measured from the centerline of the bike to the middle of the cassette. Again, Sheldon is your friend. https://www.sheldonbrown.com/chainline.html -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/rbw-owners-bunch/da8977ab-a6a1-49a4-83b1-318c49c23b78%40googlegroups.com.
