Doppler S3R fitted, 30mph and then nothing.

[JamesNRG]

Hi there,

My bike went into the garage this morning to get jetted, he said it has a 60 jet in it which is fine for the exhaust, but now, with 4.7gr Polini rollers it has slow acceleration til 5mph, then goes great til' 30mph, then wont go any faster, the guy said i need a brass plate on the carb from the Airbox as its missing or something.

Thanks

:W

 

[Lodewijk]

Derestrict the exhaust and remove the ring from your vario if it is still there. Then jet your carb properly. For the acceleration problem: use 1 step stronger clutch springs (the small ones)