i have a peugeut speedfight 2 when i set off its very slow then it will pick up very quick to i hit 20 then it slowes right down, it moves up to 30 but very slow after that when i hit 30 it slows back down to 20 can some one help me plz

sean, February 2010

i put some 5 gram rollers in and it still does it can u help me plz

sean, February 2010

cheers

sean, February 2010

yeah but i would ahve got 4.5 or 5 gram if its a gianelli ,they need alot of back pressure to run right a 2 stroke engine and the gianelli is a very free flowing pipe so the revs will have to be high to make the pressure up. see how it goes you can always take 2 out as long as they are opposite each other.

adam bike doctor, February 2010

i got a giannelli pipe on it i have ordered some 5.5 gram rollers i thort it may be them do you think them rollers will be ok cheers

sean, February 2010

what exhaust pipe has it got?a nice race pipe with a wrap around tail pipe i bet?to me it sounds like the exhaust pipe which i am going to assume is a race pipe isnt providing the crankcase with enough back pressure to make the two stroke cycle run at maximum performance.to make it run right you will need some light weight rollers that will allow the engine to rev and create the back pressure it needs to be able to work in harmony with the exhaust.fit some 5 gram rollers and see how it goes im sure it will be fine afterwards.

adam bike doctor, February 2010