Originally Posted by
elblur
Assuming a 1(60t)x9(11-23) setup is possible how many chain links do I need?
kmc chains come with 116 and wippermann chains come with 114
It depends on chain stay length.
Chain length in inches is approximately chain stay length (measured between axle and bottom bracket centers), multiplied by 2 (top and bottom), plus big ring tooth count / 4 (it wraps about half the ring, and 1" pitch chain has two half lengths with matching teeth per inch), plus big cog count / 4, plus an inch for the derailleur.
Multiply by 2 to get the half-link count which is how chain makers count.