Home arrow Charts/Forms arrow Gearing Ratio Chart
Gearing Ratio Chart PDF  | Print |  E-mail
Written by Vic R   

This chart is particularly useful if chaging the front sprocket. For example if your using a 12th tooth front and 80 rear, the ratio is 6.7.  To determine what rear sprocket is needed if a 11 tooth front is used instead,  look down the 11 column until you find 6.7 - then look at the left most column - 74 is the required rear sprocket.

 

 910111213
667.36.66.05.55.1
677.46.76.15.65.2
687.66.86.25.75.2
697.76.96.35.85.3
707.87.06.45.85.4
717.97.16.55.95.5
728.07.26.66.05.5
738.17.36.66.15.6
748.27.46.76.25.7
758.37.56.86.35.8
768.47.66.96.35.9
778.67.77.06.45.9
788.77.87.16.56.0
798.87.97.26.66.1
808.98.07.36.76.2
819.08.17.46.86.2
829.18.27.56.86.3
839.28.37.66.96.4
849.38.47.67.06.5
859.48.57.77.16.5
Sponsors
Banner