here are a couple of top speed calculators. these can be quite handy if you want to know how fast (theoretically) your bike should go.
Speed Calculator For Go Karts and Mini Bikes
go-kart racing Gear Ratio Calculator
if you have a jackshaft setup: http://www.compgoparts.com/TechnicalResources/JackshaftRatioCalculator.asp
Speed Calculator For Go Karts and Mini Bikes
go-kart racing Gear Ratio Calculator
if you have a jackshaft setup: http://www.compgoparts.com/TechnicalResources/JackshaftRatioCalculator.asp
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