AFAIK, the rating of the pressure plate diaphragm spring determines the hardness of the pedal. A lighter diaphragm makes the pedal softer i.e. less stiff.
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Originally Posted by Mister Two
Generally though a button clutch would use a higher rated pressure plate so it would have a harder pedal than a normal clutch.
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What I'm saying is, a button clutch doesnt generally use a higher rated pressure plate....
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Originally Posted by Mister Two
I'm talking about pedal harness. not the pressure applied onto the clutch face itself.
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The reason a button clutch doesnt generally use a higher rated pressure plate, is because the pressure plate applies more pressure per given area on a button clutch as opposed to a full face, due to the lower surface area of the button clutch plate....which means you don't have to use a stiffer pressure plate, and this directly affects pedal hardness.