Gearing calculator is still down. Does anyone know the math to come up with final ratio?
(Ti/E) X (A/To) = FDR
"Ti" being transmission input;
"E" being engine pulley;
"A" being axle sprocket;
"To" being transmission output sprocket;
FDR being final drive ratio.
If you have a gearbox with a ratio other than 1:1, DO THE FOLLOWING:
((Ti/E) X (A/To) X Tr*) = FDR
Tr being whatever total gearbox ratio you have. If you race with, say the 27:23 gearset, DIVIDE those gears, then multiply by the input gearset: (23/27) X 3 = Tr. Tr being transmission ratio.