In a message dated 31-Jul-99 16:57:27 Eastern Daylight Time, fold@bcpl.net
writes:
> That's not it. A hydraulic clutch linkage doesn't inherently require less
> pedal pressure. Regardless of the linkage type (cable, rod & lever, or
> hydraulic) pedal pressure is determined by the amount of leverage designed
> into the system.
You're Right. But I never said "inherently." Leverage IS the answer.
>
> In a cable or rod & lever system this is determined by the length of the
> lever formed by the clutch pedal relative to the length of the lever on
> the throwout bearing cross shaft. The shorter the lever at the pedal end
> is relative to the lever on the throwout bearing cross shaft, the lower
> the pedal pressure.
>
> In a hydraulic system this is determined by the sise of the piston in the
> clutch master cylinder relative to the size of the piston in the slave
> cylinder. The smaller in diameter the master cylinder is relative to the
> slave cylinder, the greater the leverage, hense the less force is
> required.
>
Right again. Either system will do the job. Just depends on configuration
of either.
Hey, Chip, this guy wanted a simple answer. I gave him one. My Stag has a
Ford engine in it with a cable clutch. The PO did not allow for the
differences between the Mustang and the Stag engine compartment dimensions,
etc., when he switched engines. The clutch is VERY difficult to operate. We
have "scoped" it out and the simplest solution (less hardware, better fit and
all around simpler) in this case is to put in a hydraulically boosted system.
We'll see how it goes.
Sorry if I misled. Cheers.
Art Kelly
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