Scooterotica

ok ine cobbling togerther an engine out of parts i have laying around ,question is what top end will pull sx 200 gearing with a club man and bhbl 25 through the air box ,standard gp200??

engine spec
200 cases sx 200 box koyo bearings viton seals
5 plate clutch iwis chain 15/46
race crank
clubman 25mm phbl(through air box)
will standard stage 4 gp 200 pull ok or do i need more ??

Stage 4 200, will pull SX gearing no problem, might get better results with a better pipe to reach a few more revs.

Ive got a similar set up . Std Jet 200 engine and barrel, clubman and 26mm phbh with remote filter, in an S1 pulls like a train , but wont go much over 60/65 mph. i guess an expansion would let it rev on more than the clubman. loverly to ride around suburban roads but struggles a bit on duel carrage roads etc.
Russ

I ran my GP200 for years with standard SX200 gearing, using a an AF 200 Stage 4 barrel with the tranfer ports in the top of the casing opened up to match. It breathed through a 25mm Dellorto with a standard air filter. and had a 42mm RS clubman exhaust. It went really well one up, but you had to slip the clutch to pull away 2 up when loaded with luggage. In many ways I prefered it to the Rapido 225 set up I'm using now.