Back in 1978, I bought a used 1974 Norton Interstate and rode it across the US of A that summer with a buddy. The clutch pak in that bike was all metal plates...........no fibres, why can we not do that?
From what I understand, and it doe's make sense, it's because back in 1978 your Norton and just about anything else out there had nothing near the 206 HP of your currint Busa, let alone 3, 4, 5, hundred of some of our Turbos or race bikes, truth is clutch plates and disc,'s could be made of metal, soft steel, brass, combination's or whatever, but the plate pressure to lock them up would need a clutch lever about a foot and a half long, might get away with it in a drag race only useing some sort of progressive lock up, but I'm sure its been tryed, a good example is the clutch system on a Top Fuel dragster, all metal clutch, plates, and floaters with the hydraulic/air/centrifical pressure plate putting enough force on the pack to lift a building, also it's been used in some automatic transmissions used in cars in the past, using brass and steel, and at the time they stayed better than the fiber stuff or whatever they used then, then over the years the fiber type disc's got made with much better material and had several benifits over the metal..............................Jesus I sound one of those jackass instuctor's from school years ago who's class's we all slept through