double shimming

[dapper]

I've shimmed a gearbox with 2 shims, it felt like a bit of a botch but it worked. I would think the gearbox oil would lubricate them and not allow any wearing down.

I opened a Nammer once and it had and about 5 shims in, some made from Coke tins

Been there, done that

[Grumpy225]

We are talking about 40 plus year old shopping bikes here not MotoGP

Interesting debate though

They may be old technology but theres no reason you can't build one like a motoGP bike.

[Muttley McLadd]

They may be old technology but theres no reason you can't build one like a motoGP bike.

Six per season??

[JETEX]

I had an Indian series 2 once, with a 22 mil carb on an 18 mil manifold. Yep, it was adapted to fit with a Coke can. Auto production in India and the Far East would grind to a halt if Coca Cola went bust.

[GP Kevo]

With my 40 year old plus shopping bike putting out around 30 hp, I'd want to build mine as close to MotoGP spec as possible. It's not 200 hp so I doubt it would need 6 builds a year.