Knocking noise?

[alanscottj]

Any thoughts on this knocking noise? I've looked all around the scooter, nothing obviously loose. Had the side casing off, all good in there, gearbox is shimmed up properly (just had new end plate and bearings). It sounds mainly on the flywheel side but I've been listening to it all morning so thought I'd ask you guys to have a listen with a fresh ear.

Click on picture and it should link to photo bucket video

[wack 63]

Have you tried using a long screwdriver as a stethoscope at various points on the motor?

[garry inglis]

It sounds like the front sprocket nut is not tightend down right and the chain is off centre don't run it to Mutch as it will round the threads on the crank

[HxPaul]

I've listoned to it three times now and I cant hear any knocking,all I can hear is the chain rattling as it spins around.

[mick1]

I must admit it doesn't sound much different to a lot of scooters I've rode.......

saying that I thought there might be a "whirring" noise in the background (is this the chain noise mentioned ?) wondered if it could be the kickstart peg catching ?

[alanscottj]

Thanks all for having a listen - I think I'm developing Lambretta Paranoia! I'm certain it's not the chain rattling, if anything the chain might be a bit tight still (I loosened it a touch a bit as it was too tight).