Scooterotica

hi, currently running a mildly tuned 200cc engine with a 22mm jetex (taken out to 26mm) big bore exhaust & std li 150 gearbox (15x46) thinking of fitting a 30mm phbh delly & just wondered if i need to alter the gearing at all or will be fine as it is ? thanks for any info. db

I would run it as it is mate, i up mine to a 16 front on a 200 li150 box and i were up and down the gears all the time, up hill or in a head wind it was a pain, leave as is, innocenti were right with the 15 IMO, regards.