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vespa px gear ratios
Posted: Thu Aug 20, 2015 4:18 pm
by ducksta
hi guys long stroking a polini barral 26mm phbh carb saxon exhaust what gearing do i need clutch 21-22-23? standard gearbox in at present
px 125cc donar
Re: vespa px gear ratios
Posted: Fri Aug 21, 2015 4:49 pm
by ducksta
some one must have a view
Re: vespa px gear ratios
Posted: Fri Aug 21, 2015 4:59 pm
by cartmel808
I run standard PX125 box with 22t clutch & DRT 65t primary on my Quattrini M1xl...
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Re: vespa px gear ratios
Posted: Fri Aug 21, 2015 10:13 pm
by paul d
If it has a 68 tooth primary drive then a 22 tooth clutch is the biggest you can use.
Re: vespa px gear ratios
Posted: Sat Aug 22, 2015 1:28 am
by Muttley McLadd
Is a Saxon exhaust revvy? Google isn't helping me..
My long stroke 190 runs stock 23/65 primaries with the short 4th gear, with a RHS JL pipe (or a SIP road). It'll sit around 110ks until the petrol runs out.