Gear chart using Gain Ratios

For 26 X 1.5 / 38-559 / MTB tire with 175 mm cranks

With 7-speed "G" 13-15-17-20-23-26-30 Cassette

4826.3 %3835.7 %28
136.75.33.9
15.4 %
155.84.63.4
13.3 %
175.14.03.0
17.6 %
204.33.42.5
15.0 %
233.83.02.2
13.0 %
263.32.61.9
15.4 %
302.92.31.7

This small version of the chart can be printed, cut out, and taped to your bicycle for reference.

6.75.33.9
5.84.63.4
5.14.03.0
4.33.42.5
3.83.02.2
3.32.61.9
2.92.31.7

Note: This is under construction, and the print function does not yet work.

Gear Chart by Sheldon Brown

http://sheldonbrown.com/gears