GP Clutch thrust bush

[jonno]

Has anyone machined a bit off the clutch thrust bush to give a bit of clearance,for annoying hard to set up clutches?

[Knowledge]

No, but it would not be difficult to do.

Could you not get the same effect by fitting one or two extra side-casing gaskets?

[DaveTomo]

As above
http://www.lambrettaupgrades.co.uk/apps ... ow/6507383

[jonno]

Wouldnt the thicker gasket affect the kickstart engaging properly?

[Warkton Tornado No.1]

Has anyone machined a bit off the clutch thrust bush to give a bit of clearance,for annoying hard to set up clutches?

Yes.

More than once but not for the reason of standard clutches, but the principle applies. I also made up a little bolt in 'cap' so that a non GP cover could use the GP bush. What a tw*t I was! Probably still am, but now I try to use the spigotted clutch centre/bored cluster combination whenever I can. It is by far the best combination to aid clutches clearing fully to avoid broken teeth on first gear.

However, thicker crankcase gaskets work well (CamLam's last forever) & the kickstart engagement is something I've fiddled with as well in the past. Lengthened the slot, fitted a longer, stronger spring. That was to suit an old school six plate clutch with a SII cover & the kickstart shaft moved outboard to suit by cutting back the inner face.

Eventually that cover started to crack but I added steel reinforcement rings shrunk on & all was fine again.