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Right, changed the piston ring last night. No problems with the cylinder or piston. Bike started fine with no problems. I have however lost...
Thanks guys, unfortunately I'm not quite sure of the exact revs. The bike moves normally when I fully open the throttle back from a standing...
I have a 2000 Yamaha MBK rocket with the following setup (All garage fitted apart from cylinder) 70cc Polini Sport Cylinder Polini Sport Clutch...
I think it maybe time to change the piston ring on my Stage 6 Sport Pro. It's a 70cc Aluminium kit with single piston ring. I run a premix of...
Thats what I find strange, i get the same problem whether I use a 93 main jet or a 120 (a total of 30% jet increase) when I open the throttle...
Yep It's a slow dying sound, bike loses power and wont accelerate Opening the choke at this stage (lets more fuel in?) doesnt really help either ??
Hi all Just following on from the above. I fitted my new primary gear now but I still can't open the throttle fully with a 120 Jet (biggest I...
The garage has told me the bike was running lean and not to ride it until I upjet so i'm kind of relying on them. Tried the 120 jet before with...
Well my 120 jet should be down tomorrow so hopefully that will work...think I might be able to get a 128 aswell. I'll give it a quick test run...
Took my latest moped to the garage to get the new set-up I installed checked over 1991 Yamaha BWs 19.5mm Stage 6 Dellorto Carb (92 main jet,...
I might aswell keep this all in the same thread. I let the bike run for about 10 mins and revved it a few times, quite a bit of smoke out the...
Madness, too the variator apart again just to double check everything and give it a quick clean. Fired it up, pulled the throttle and the bike...
Yeah that's the problem I have, I pull the throttle and the bike just revs....no movement of the clutch bell or back wheel. So like you say the...
I'm pretty sure the clutch bell has to turn which enables the back wheel to turn? The clutch spins when in idle and when i rev.
Hi all I recently installed the following onto my 1999 Yamaha MBK Rocket 70cc Polini Sport cylinder Polini Variator 17.5mm Dellorto Carb...
This is where the jets confuse me at times. The set-up before had a 17.5mm carb with a sports air filter (polini 37mm 90 degree mini) and it ran...
Hopefully not, the crankshaft is the only bit I can't get into!! The engine i've used intially came with a standard exhaust and airbox but...
Hi all Recently had to add a new engine to my 1999 Yamaha MBK which came with the following: 70cc Malossi Kit Malossi Clutch Malossi Variator...
Hi all I'm about to completley rebuild a 1991 Yamaha BWS but keep hearing conflicting reports about which parts to choose. I have decided on...
