Author Topic: Gear ratio conversion  (Read 2714 times)

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Offline boxcar

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Gear ratio conversion
« on: July 05, 2015, 07:20:05 pm »
Ok here I go, I have a 8" pulley on my motor, a 6" on a 1.92 to 1 gearbox. Right now I'm running a 12t driver to a 44t axle sprocket with 15" rear tires. I want to convert my belt to a chain clutch on motor and sprocket on gearbox. What am I running now and what should I buy for teeth on clutch and teeth on gearbox??? Does this make since to you all  :confused:
Thanks, boxcar
Raabe Racing

Offline PJG56

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Re: Gear ratio conversion
« Reply #1 on: July 05, 2015, 09:34:30 pm »
Right now you have a 5.29-1final ratio.
So just a couple of examples to duplicate your ratio with chain and sprockets 16 teeth on clutch 12teeth on gearbox,20 teeth on clutch 15 teeth on gearbox.
Hope this helps
Paul Guptill  (oppy) #238modX
2012 slmra mowstock champion(builder/owner)

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Offline boxcar

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Re: Gear ratio conversion
« Reply #2 on: July 06, 2015, 07:10:04 am »
Thanks, I didn't realize I'd have to go so small on the gearbox.
Raabe Racing

Offline PJG56

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Re: Gear ratio conversion
« Reply #3 on: July 06, 2015, 10:52:30 am »
You could change 12 tooth on rear to 16 tooth and use 18 tooth clutch and 18 tooth on gear box and maintain your current final ratio
Paul Guptill  (oppy) #238modX
2012 slmra mowstock champion(builder/owner)

2013 slmra mowdified champion(builder/owner)
2013 ARMA national champion Mod-X(builder/owner)
2014 ARMA national champion Mod-X(builder/owner)
2014 All American Champion Mod-X/CP(builder/owner)
2014All American Champion FXT (engine builder)
2014 All American 2nd place SP(builder/owner)
2015 All American 2nd place BP (builder/owner)
2016 OutlawTriple Crown FXT Champion (engine builder)