Engine/ gearbox and drive ratios

Got questions? We got answers....
Post Reply
Deseret Rider
Supporting Member III
Supporting Member III
Posts: 163
Joined: 11:17 am Sep 11 2011
Country:
Location: East Central Utah

Engine/ gearbox and drive ratios

Post by Deseret Rider »

I've got a 13/47 sprocket ratio on a '03 200. It's street legal and I am wondering if it would pull 75 MPH on pavement at a reasonable rpm----I don't want to have it screaming--So I'm wondering how to calculate ratio's----First, I'd need to know the basic engine to 6th gear output ratio-----and then , from there, to know what effect a 14 or 15 tooth counter shaft sprocket would produce. What I'd like to do is when I get to the dirt to be able so simply exchange the Countershaft sprocket and go trailing. For that simplicity I'd prefer not to mess with the rear sprocket at all-------and finally, I'd like to know where the break off point is on the chain length I.E. can I run a 14 or a 15 without adding a link? How to achieve my goals----Idea's and advise appreciated. :hmm:
The Duck of Deseret (Deseret was Utah's first name)
User avatar
rbates9
Supporting Member II
Supporting Member II
Posts: 3164
Joined: 06:07 pm Apr 27 2010
Country:
Location: UPSTATE New York

Engine/ gearbox and drive ratios

Post by rbates9 »

http://www.gearingcommander.com/ This should do what you want.

I don't think a 15 tooth will fit. I had a 14 on mine when I bought it and it was pretty tight if I remember right.
Deseret Rider
Supporting Member III
Supporting Member III
Posts: 163
Joined: 11:17 am Sep 11 2011
Country:
Location: East Central Utah

Re: Engine/ gearbox and drive ratios

Post by Deseret Rider »

Oh Yeah! that'l work----it's a great site. Thanks for the heads up.
The Duck of Deseret (Deseret was Utah's first name)
Post Reply