Gerhard,

On Sun, 28 Aug 2005 10:57:00 -0300, Gerhard Fiedler wrote:

> I don't think a force feedback would by you much if anything. The point
> where the clutch engages/disengages doesn't seem to translate into a
> significant actuator force. 

That really depends on the clutch!  Most cars have some sort of "hiatus" that you can feel as the bite-point 
comes in - makes it much easier to drive something you haven't driven before, compared to trying to remember 
the position of the pedal.  My first car had a competition clutch, and the amount of force taught you not to 
sit with your foot on the clutch, and gave the thigh muscles a good workout!  The increase in force at the 
bite point on that was so obvious that anyone could drive it easily first time.  The most difficult to drive 
are those with constant force through the whole movement, with no clue at all from the force.

> If you want a feedback, you probably want
> something related to the torque or rotational speed difference between
> clutch input and output.

But you need to feel where it's *about to* bite, when there is no transmission of movement - once it's started 
transmitting movement you can tell that by the car itself moving.

Cheers,



Howard Winter
St.Albans, England


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