Stiff clutch pedal = failing clutch?

wolff at wolff at
Sun May 4 20:53:46 EDT 2003

Thanks for the explanation. Makes total sense. So it's not really the
pressure plate that has gone bad, but the thickness of the friction disk
that makes the difference.

>  Kneale and Wolff,
>  The reason a clutch feels the way it does involves how close to "center"
> diaphragm arms are on the pressure plate and thats a function of clutch
> thickness.
>  The center or breakover point of the pressure plate diaphragm is the
> of max resistance. Its very like a compound bow, when you begin pulling
> bowstring the effort required increases until you get to the breakover
> once past that point effort drastically decreases. A new clutch disc is
> enough to keep the pressure plate very close to its breakover point. As
> clutch wears it gets thinner and requires you to move the pedal further to
> reach the breakover point. Eventually the clutch gets so thin that you
> reach the breakover point of the pressure plate. You feel this effect in
> pedal as stiff at the top and easy at the bottom when new and easy at the
> and stiff at the bottom when old.
>  Sorry for the poor explanation but its the best I can do without
> Keith
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