Originally Posted by Dahon.Steve

I put the numbers in Sheldon's calculator and it seems a little high for 5 speed. The 50' inch 1st gear is not low enough. You'll be riding in 2nd gear most of the time.

Inches

1-----54
2-----63
3-----81
4-----102
5-----121

Buying Sheldon's 23T cog, the numbers are much better. You'll spend most of your time in 3rd gear giving you two lower gears for climbing.


1----37.6
2----44.5
3---- 56.3
4---- 71.4
5-----84.5