mugello issues

[roofis303]

hi all new to the page . just picked up a gp 125 with a 186 mugello kit in it . running a 28mm delay carb with AF clubman 32mm . with a open carb the bike starts and runs fine . but i can't seem to get over 45 mph on the bike . i am running flat out and there seems to be holding back . like there is a bit more to go but i am not getting it . any ideas what this could be i have tried another pipe i tried a friends pm tuning pipe and still the same bike won't go past 45 …. my mate has same bike with same set up and his flies past mine please help

[Architecten]

Gearing? Main jet size?? Is the exhaust actually 42mm???

[dave411]

Has this set up allways been on the scooter?Contact previous owner and ask?If so,is it smoking alot?Could be flooding carb.Check plug to see if its wet and oily.

[alanscottj]

What gear box is in there?

[roofis303]

guy i bought it from never had much a clue to tell the truth . main jet is 125 atomiser 266 and 53 idle jet x2 needle . scoot don't smoke runs well but just being held back somewhere

[roofis303]

what jets do u guys run in your scoots we a mugello kit and a AF 43 mm clubman we a delay carb

[mark1]

I've got a 186, 30mm dellorto 120 main jet 55 pilot av266 x7 needle, JL3 pipe, ignition set at 19 degrees running an LI150 box with 16 x 46 gearing.
It runs great, the ports have been opened up a bit, it'll touch 70 top end and sit happily at 60 all day long.

You might have to open it up to see what gearing you've got. Someone in our club was trying to run one on 17x46 gearing and it just died in 4th.

[mick1]

Stuck rings
Timing too advanced/stator issue ?

[roofis303]

i plan on trying my mates carb tomorrow if that fails i will be checking the timing we a strobe . as i said the guy i bought it from has not a clue about lammys . rule out the small things first . thou hope its a simple fix like timing or jetting . the lam my just gets to the point when driving where it won't rev right out i have changed the jet i went from a 125 to a 120 to a 115 all still the same lam my won't rev out while riding

[mick1]

sounding more like electrical........stator/cdi or even the plug (worth changing).