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Old 06-12-2003, 01:20 PM
Arthur Dalton Arthur Dalton is offline
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Join Date: Aug 1999
Location: Florida / N.H.
Posts: 8,784
because of the speedo being specific to diff. ratio, many just do the math for MPH per 1000rpm of tack with the new gears and use the tack as a speedo guide...[ if you have a tach]

I have done this and you just get used to it....

Google has some nice RPM/Ratio speed calculators that are number plug-ins --- do a search...
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