Originally Posted by idcruiserman
The "rigorous" equation mentions that adding 1 is for derailleurs. Does that go for the simple equation as well?
The bike's at home, but using VD's chainstay length of 17.7", I get 49" for stock chain and 51" for 42/16. So add 2 links to keep the axle in the same location.
1) Looking at the construction of the equations, I suggest the 1 added for derailleur compensation is applicable to both.
2) I got single-speed chain lengths of 48.84 and 50.14 inches, or 49 and 50 links.