Originally Posted by rmdhawaii
Front
Front axle: 28
Front middle shaft: 18
Front side: 24
Rear
Rear side: 18
Rear middle shaft: 19
Rear axle: 41
Verify your numbers against Mugen's MTX-4 Overdrive Chart and you should be good to go.
Thanks, the excel its done.
I would like to check the math now. I need your inputs.
Given the number of pulleys above, am I correct to do the math like these ? :
A) Front Pulley Ratio : 28 / 18 = 1.5555
B) Side Pulley Ratio : 24 / 18 = 1.3333
C) Rear Pulley Ratio : 19 / 41 = 0.4634
D) Lets say 2mm split, Front Tires 63mm, Rear Tires 65mm : 63 / 65 = 0.9692
The overdrive ratio = A X B X C X D = 0.9314 ---> which is underdrive
AM I CORRECT ???