Take your time get some baggies for the hardware,,, label everything and take pics as you go,,, if you have to order parts this will help with reassembly later if it has to sit for awhile waiting for parts
Please excuse the ridiculously long time to reply!
No progress - Took it to a garage, he checked the clutch and it seems fine, thought it was the variator (which seems a bit loose on the cam-shaft), replaced the variator but the rattling persists.
Some more info :
Rattling starts at 40kmh and stops at just over 50 km/h (seems its linked to the rotation of something as the speed of the rattle increases between these two speeds until it eventually fades out at just over 50km/h.
Rattling definately sounds like its coming from the drive area of the bike (rear end, left side)
No rattling noise when the scooter is revved on the stand - only when ridden
Very strange, but important, rattling noise is not present (or very quiet) when the road is wet, only in dry conditions
It seems to be getting louder and i've done a few thousand km with it like this (driving me mad)
I would check the Variator weights if worn or the Guides worn they will make a rattling noise. That would explain why it only happens at certain rpms and once there is enough centrifugal force to overcome the worn part the rattling gets quieter or goes away. Alleyoop
cyborg - I've checked the rear wheel and cant see anything obvious - Fact that the rattling does not occur when the scooter is revved on the stand (only when riding) makes it really hard to locate though.
Check your rear brakes. You might have a broken pad that's hanging and rubs when your moving. The faster you go it would get slammed off to one side and stop until you slow down again. Seen this happen on mine. Plus the brakes themselves might be loose.
If you think everything is going your way, you obviously don't own a Chinese bike.