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Re: [St] Chain & Sprockets

your calculations for the two final drive ratios are correct, but dropping 2
teeth up front is equivalent to adding 5 teeth to the rear, not 8

43/19 = 2.263

43/17 = 2.529
48/19 = 2.526

the rule of thumb I use is that each tooth removed from the front sprocket
is roughly equivalent to an additional 2.5 teeth on the rear sprocket


----- Original Message -----
From: "JES_VFR" <jes_vfr@xxxxxxxxxxx>
To: <ST@xxxxxxxxxxxxxx>
Sent: Monday, April 21, 2008 11:20 PM
Subject: Re: [St] Chain & Sprockets


> Going down two teeth on front sprocket is like going up 8 teeth on the
> rear.
> You went from 2.263:1 final drive ratio to a 2.52:1 ratio



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