Noisey Gearbox

[db67]

Hi, got a bit noisy gearbox when the scooter is on tick over which seems louder around the rear hub side , doesn't seem quite as bad with a bit of throttle, I've checked the 1st gear shim with some feeler gauges & it's within the tolerances, all the bearings & endplate bush are new,the gearbox is an Indian gp 200 from SR, the endplate is the one that came with casing so is matched,chain is a new iwis type with brand new crown wheel & bearing bush, the only bearing that isn't new is the rear hub one but it's a good quality used Italian one, everything seems to work fine , would just be nice to get to the bottom of this noise thanks for any info

[Doom Patrol]

Perhaps it is just that you are using a lot of new components? They might bed in after a while.

[garry inglis]

It could be just the chane is a bit slack and rattling on the crown wheel teeth

[db67]

Hi, had another go at trying to get to the bottom of my rattling sil gp 200 gear box on tickover ( also had this on Italian gearboxes over the years with the noise disappearing when clutch is pulled in) but still not solved it so I have conceded defeat, all parts good,no serious wear, gearbox shimmed correctly etc, gearbox & clutch operate as they should with no problems,so I was just wondering if there was an oil that meets Lambretta spec that was maybe a little thicker & would maybe quiet things down a little ? thanks for any info

[Architecten]

Have you checked whether kick start is rubbing on clutch?

[db67]

Hi,it does have a sil kickstart shaft fitted & I know the tolerances of these aren't always bang on , would it be worth fitting an Italian one? cheers