..but it does not improve acceleration 0-20 MPH at all.
The revs stay quite low (3500rpm -3700rpm) between 0-20 exactly the same as with OEM variator.
Maybe this is different on the 500 model. - http://www.modernvespa.com/forum/topic25391
20-80 MPH is considerably better no doubt, but again it never hits 7500rpm but around 6000rpm. The pull is very good once you get going but to be honest overall I am a bit disappointed. I was really hoping that it would improve those lazy take-offs.
I am awaiting a delivery of new Gillera Stalker 50cc for my girlfriend. She will definitely beat me on that if we do 50 meters drag race
Well life is tough!