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Vespa P Series Gearing Calculator
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ferriswolf
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ferriswolf
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Stumbled across this tool today on the scooterhelp website; thought it quite useful to understand the gains you might make playing with your gearing/clutch teeth. I was considering changing my clutch tooth/primary gear but using this tool the cost of doing so on my setup for a few MPH more has made my mind up; its just not worth it in my case. Hope you find it of use.

https://www.scooterhelp.com/tuning/vespa.gear.calc.html
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Christopher_55934
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2007 Stella 225
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Christopher_55934
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@christopher_55934 avatar
2007 Stella 225
Joined: UTC
Posts: 3547
Location: Rochester, Minnesota
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Re: Vespa P Series Gearing Calculator
ferriswolf wrote:
Stumbled across this tool today on the scooterhelp website; thought it quite useful to understand the gains you might make playing with your gearing/clutch teeth. I was considering changing my clutch tooth/primary gear but using this tool the cost of doing so on my setup for a few MPH more has made my mind up; its just not worth it in my case. Hope you find it of use.

https://www.scooterhelp.com/tuning/vespa.gear.calc.html
Try this one, it lets you adjust tire size and gearing, not a fixed number. Such as the lower 4th gear and 24 tooth 65 combo.

http://gearingcalc.free.fr/
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