AussieSteve
Active Member
Gear ratios calculate like this:
Engine has 83t/20t = 4.15:1 internal gears
36t/10t = 3.6:1
3.6 X 4.15 = 14.94:1
50t/10t = 5:1
5 X 4.15 = 20.75:1
Just so you know.
One minor correction. The clutch gear has 82 teeth, not 83, making the internal ratio 4.1:1
For drive-train calculations, this tool is invaluable:-
jpilot's Gear Ratio Calculator.