Is this layshaft ok to use with a tuned engine?

[servetakid]

I need to replace my layshaft as my hub went and damaged the threads. I found one in the garage that was like my original one, so thought i would use this. But the gears do not turn freely at all when on the shaft and i dont want to use this. I also have this type of layshaft in the garage as well. It is much fatter than the original, so i was wondering if people recomend using these shafts. I dont want to put something to strip it down again, if using it is a no no i would rather get something that is up to the jobs. My main worry is the extra weight, or am i being over cautious? Thanks

[servetakid]

Just to add, it is in pretty good condition.

[Andy Pickering]

Their is nothing wrong with being over cautious were a Lambretta is concerned..if theirs an element of doubt in your mind then change it ..it will always be at the back of your mind when fully loaded and mile munching

[servetakid]

There is nothing up with this layshaft as such, its just different to my original. Just wanting to double check.

[servetakid]

Can any one give a yay or a nay? To wether its any good to use, like I say, its in good condition. But its just different.

[coaster]

Coiuld it be an MB layshaft? it might be worth giving them a ring if you're not sure (good shaft btw). Is the one that is tight a SIL/Innoccenti/Servetta one? if so why not use a strip of fine emery cloth to polish the gear bearing area, it probably won't need more than a couple of minutes gently work.

[servetakid]

It's not a MB layshaft. The only difference if the center section is much fatter, everything fits it ok.

[rosscla]

It's an early style layshaft. I think S1 or S2 so will be approaching 50 years old.

See diagram here -

http://www.scooterrestorations.com/lamb ... kickstart/

Personally I'd rather fit an new one. SIL from Restos for £40 for or MB if MINO...