Hi Bullrush,
This is not as simple as it appears. You are enquiring about mechanically operated clutches which require regular maintenance and precise set up if they are to be light and pleasant in operation. You can have two seemingly identical bikes of which one will have a clutch a gorilla would grumble about and t'other like a babies kiss. It takes very little to move between the two.
I would suggest you beg, borrow or buy a few motorcycle books that deal in general maintenance so as to get an idea of what is required. I'd suggest the writings of PE Irving and Roy Bacon cover the subject in a useful fashion. Irvings 'Restoring & Tuning Classic Motor Cycles' or 'Tuning for Speed' or Roy Bacons Vol 3, of Restoring Motorcycles which deals solely with Transmissions will give you a solid background. There are plenty of others but those three are the foundation of them all.
In general classic bikes demand far more fussing around with to keep on top line than does a car. This is part of the fun and getting them just so gives an inordinate amount of pleasure. It costs very little but your time and time in the shed is time out of the house. Welcome to our world.
A light clutch depends heavily on you.
Cheers,
