How To Calculate Gear Ratio w/ 3 Different Sprockets?

[SquidBonez]

Calculating your gear ratio is pretty easy with 2 sprockets (example: 10T to 60T = 6:1 gear ratio), but how do you calculate it with 3 different size sprockets like on a jackshaft? Let's say you go from a 10T on the clutch, 12T on a jackshaft, and then 60T on the axle? How would you figure that out? Math isn't my strong suit...

 

[mckutzy]

Easiest one I use...
https://affordablegokarts.com/pages/gear-ratio-calculator

There is a few others out there that have a speed calc in them aswell... but this is fine for that...

OH... youll need to have 4 sprockets total to use a jack shaft, one being the TC or Clutch, the 2 on the shaft(input and output) and one on the rear end.

 

[SquidBonez]

Easiest one I use...
https://affordablegokarts.com/pages/gear-ratio-calculator

There is a few others out there that have a speed calc in them aswell... but this is fine for that...

Wow, I've been looking for a calculator like this. Thanks!

OH... youll need to have 4 sprockets total to use a jack shaft, one being the TC or Clutch, the 2 on the shaft(input and output) and one on the rear end.

Yep, you're right.