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bandit37388 · 01-21-2008, 02:00 AM

If the tire size is 28" Diameter. You need to use a 9 Drive and 20 Driven gears. that gives you a driveshaft cable rotation of 995.04 revolutions per mile. 1000 is what your speedometer is designed for. 995.04 is as close as you will get without a ratio adapter. Check around for a 1.004978303 ratio adapter if you want the exact 1000. However you will probably be less than 1 mile per hour off without it.

01-21-2008, 02:00 AM	#9
bandit37388 Registered User Join Date: Dec 2007 Location: tullahoma, tn Posts: 23	Re: WTB speedo gears If the tire size is 28" Diameter. You need to use a 9 Drive and 20 Driven gears. that gives you a driveshaft cable rotation of 995.04 revolutions per mile. 1000 is what your speedometer is designed for. 995.04 is as close as you will get without a ratio adapter. Check around for a 1.004978303 ratio adapter if you want the exact 1000. However you will probably be less than 1 mile per hour off without it.