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View Full Version : Gearing question: ATC70/110MX project!



RedRider_AK
09-03-2006, 12:01 AM
Hey all! I have another question for you concerning my ATC70MX I'm building:

The front sprocket on the 110 engine I'm using is 15 teeth.
The rear sprocket on the 70 axle is 36 (I'm pretty sure)
Stock 110 tires are 22"
Stock 70 tires are 16"

My question is: If my stock ATC 110 went 45 (I believe) with the 15/49 sprocket combo. I want to figure out how fast the ATC70MX will go with the 16" tires and the stock rear sprock, but with the 15 tooth front from the 110 engine. Anyone up to helping me?

McDerry
09-03-2006, 12:35 AM
1.36 a revolution from the gearing 0.72 for the tires so your looking at 44 mph saying the rpm didnt change

RedRider_AK
09-03-2006, 01:54 PM
Hey! Thanks man! So you're saying I will go just as fast with the new gearing and smaller tires as it went stock with the big stuff. Great. Thanks a lot. :)