What speed can I expect with this set up ?

Polini sport cylinder
Polini variator
Polini clutch
Polini belt
Polini 6.0g rollers
Polini cluch springs
Mallossi gear up
Yasuni R

 

65-70, I'd get a stage6 streetrace over the polini though. Also, you can't really determine which rollers you will need, you're gonna need to buy a few sets

 

Why the stage 6 ? Il probably get 4.5 g 5.0 g and 6 g

 

The Pedparts blog explains it, basically the stage6 and polini both make the same peak power, but the polini only makes peak power at a certain rpm and then after that, as the revs increase the power starts to drop.

The stage6 kit keeps making peak power all the way from 9,000 rpm to about 12,000 or something like that, so as you go faster the power is still there to keep pulling, resulting in a higher top speed. Also it's marked as 49cc, and it's cheaper

 

Is thatt the sport pro ? this one http://www.pedparts.co.uk/product/535/stage6-70cc-sport-pro-ac--piaggio

 

No, the streetrace. However, I didn't know the sport pro was that cheap for air cooled bikes, might be worth getting that instead, won't be as reliable as the streetrace though.

 

Cant seem to find a streetrace kit for an air cooled piaggio engine

 

Ok on the sport pro can i keep my crank and can i run it with a yasuni z for two weeks

 

Unfortunately you'll need a new crank, and yeah it will run on a Z but won't make good power. It would run good with a stage6 pro or pro replica, both of which are cheaper than a yasuni R I believe

 

Ill stick to the polini

 

I have a mallosi sport, malossi variaor clutch an belt kit, mallosi reeds, standard 17.5mm carb, doppler s3r an the acceleration to 30 is like a rocket but when i get to half throttle it bogs as it needs jetting an setting up

 

get it on the dyno

 

Only one i know of in north west is the one that goes rocket centre in blackburn an thats fuckin miles away lol

 

barnsly
batley
leeds
shiny red dno where
halifax

thts all tht i know

 

I mean close-ish haha

 

oli im sure that bike shop you go to will be able to tell you were a close bike dyno is to you

 

Important gettin a new carb already set up to the engine so ill get that then if its not perfect ill take it to blackberry might go to Preston next week see if anywhere round there will do it