Scooterotica

ive just bought a 64 tooth primmary drive cog.
i amnt sure which engine its best suited for, can anybody give me some advice
on vespa gearing ive never really changed anything other than changed my t5 to a 21 tooth clutch.
which engine would benifit the 64 tooth and whats the best clutch to mate it with.
any help or info would be a great help.
i am sure many of you guys have tried and tested all the different gear kits and stuff.
cheers

kum on lads surely some knowz what engine this is best suited to.
would it go in a T5.
its a straight cut 23 tooth clutch and a 64 straight cut primary drive...

I know where it's ment to work in theory, in practice it doesn't.

Fingers burnt, just throw it away and chalk it down to a lesson learned.

What did u try it on..
what sort of results were u exspecting????