clutch problem please help

[shell 69]

hey guys i rebuilt my 49cc cag engine big boar kit,2 shoe clutch and basicly everything else it starts but it wont move as soon as i open the throtel and lift my feet off the ground it wont move it sounds like its struggling heaps and i think the clutch is sliping the full circle crank didnt have a key way for the clutch the clutch didnt eather how do i fix it how do i adust it the clutch is on as tight as it can go.
PLEASE HELP
jess

[hudson44]

Back off the 2 nuts that adjust the clutch. The best way to do it is back them off until the spring is loose then tighten them so there is a little tension on the springs. This is a good starting point.

[mac90]

just loosen them up & make sure they are adjusted evenly
measure how compressed the spring is so the measurement is roughly the same for both springs

[shell 69]

it feals like it is slipping on the crank there should be a key way there its stupid they havent got one

[Glen]

alot of the cags flat out dont even have the keyway cast into the clutch side of things and are just a clamp fit. as in my quad.

i grab the clutch arm with a pair of vice grips and tighten the hell out of the center bolt. use a nice high quality socket head bolt as the cheap bunnings ones will round off applying that much torque to them.

[hudson44]

Originally Posted by shell 69

it feals like it is slipping on the crank there should be a key way there its stupid they havent got one

They are a tapered seat. They don't even need to be that tight to hold. It will be the clutch adjustment. If you havent touched the adjustment then it will be slipping its arse of as they normally come very tight.

[Benny88]

hang on... If the engine sounds like its struggling i dont think its slipping. if you rev it with the wheel off the ground does it rev up? If its slipping it should rev up but not realy go anywhere

[shell 69]

ye it runs fine wen the wheel is off the ground

[bj#5]

a sliping clutch can case it to sound like its strugging to rev and running like poo ...

[dazbbws]

im wondering.. as you say you rebuilt the motor, i spose you would have to do the whole oil-fuel thing? also.. new crank and bore kit.. im thinking, maybe the stroke or something to short? ahaha i dont know.. x]