Re: Clutch

["Jeremy Selg" <jisu09@hotmail.com>]

>From: "Michael & Carmen Keith" <mikeandcarmen@pdq.net>
>To: <jettaglx@igtc.com>
>Subject: Re: Clutch
>Date: Thu, 11 Feb 1999 21:44:22 -0600
>Reply-To: jettaglx@igtc.com
>

I did replace the pressure plate, and your answer makes sence.  So my 
worries are no more!

Thanks, 
          JR


>If you didn't replace the pressure plate when you replaced the disk, 
then
>you may have a bad pressure plate.  However, it is more likely the 
nature of
>the clutch disk that is causing the issue you are describing.  As you
>stated, in a self-adjusting hydraulic clutch, the point of engagement
>changes as the clutch wears.  The AP clutch disk (again, I am 
assuming it is
>like mine) is about as thin as a very worn stock clutch disk.  
Therefore,
>the hydraulic actuation self-adjust to compensate for the thin disk.  
The
>pedal feels as if it is at or near the end of its adjustment because 
it is.
>The difference is that the material on the AP clutch should 
experience very
>little wear over time, & therefore, there will not be much need for
>additional adjustment for clutch wear.
>
>I experienced the same phenomenon when I installed my racing clutch.  
The
>clutch in my race car is a cable actuated clutch rather than a 
hydraulic
>one, & the cable must be manually adjusted.  After installing the 
racing
>clutch, I had to adjust my clutch cable almost to the end of its 
adjustment.
>There is almost no adjustment left in the cable.  I have raced with 
this
>clutch in the car for almost a year (including a 6 hour enduro), & I 
have
>not had to adjust the cable at all.
>
>Michael Keith
>Pasadena, TX
>'98 Jetta GLX
>'85 Golf SCCA ITB
>
>
>-----Original Message-----
>From: Jeremy Selg <jisu09@hotmail.com>
>To: jettaglx@igtc.com <jettaglx@igtc.com>
>Date: Thursday, February 11, 1999 4:34 PM
>Subject: RE: Clutch
>
>
>>>Date: Thu, 11 Feb 1999 15:26:38 -0600
>>>From: mikeandcarmen <mikeandcarmen@pdq.net>
>>>To: jettaglx@igtc.com
>>>Subject: RE: Clutch
>>>Reply-To: jettaglx@igtc.com
>>>
>>
>>I understand that the engagement is abrupt and the other
>>"sacrifices"related to a racing clutch, I'm definitly willing to 
make
>>the "sacrifices", but what my real question is.... It seems that 
with
>>a self adjusting hydralic clutch, with wear & tear it will adjust
>>itself. Therefor the point of friction or engagement when depressing
>>the clutch pedel will move increasingly toward the top of the pedel.
>>If the point of friction is ALREADY very near the top of my pedel,
>>when my clutch self adjusts it will have no room to "go up"  This 
may
>>not be an actual clutch disk problem, as much as a pressure plate
>>problem. My main concern is clutch life.
>>
>>
>>
>>        JR
>>
>>>I'm not familiar with the AP racing clutch, but if it's anything 
like
>>the
>>>racing clutch that I bought from BSI for my race car, then the
>>engagement &
>>>disengagement characteristics that you described should be 
considered
>>normal.
>>>
>>>The disk of my racing clutch is a 4 puck design with ceramic 
friction
>>>material.  This clutch disk has much less friction material than 
the
>>stock
>>>clutch disk.  This is the reason that it disengages so quickly.
>>Also, in
>>>addition to having a very thin layer of friction material, this
>>clutch disk
>>>has no springs in it like the stock disk does.  This is why
>>engagement is so
>>>abrupt.
>>>
>>>These are the inherent trade-offs of a racing clutch.  Those of us
>>who use
>>>them in racing applications are willing to sacrifice smooth
>>engagement for
>>>quick, slip-free engagement.  The whole point of a racing clutch is
>>to not be
>>>able to slip it.
>>>
>>>If you find the characteristics of this clutch to be unacceptable, 
I
>>would
>>>suggest that you use a stock clutch disk or perhaps a disk that is 
of
>>stock
>>>design with better quality friction material if such a disk exists.
>>>
>>>In any case, this is assuming that the AP racing clutch is of the
>>same design
>>>as my racing clutch.  If that is not the case, then my statements 
may
>>not be
>>>applicable.
>>>
>>>Michael Keith
>>>Pasadena, TX
>>>'98 Jetta GLX
>>>'85 Golf SCCA ITB
>>>>===== Original Message From Jeremy Selg  =====
>>>>I installed an AP racing clutch about a month ago.  When I first 
put
>>it
>>>>in  it was really grabby, on or off, you couldn't slip it if you
>>tried.
>>>>Now after only a month the friction point is really high on my
>>pedel, I
>>>>press it in about 1" and the clutch disengages.  This is 
reminisent
>>of
>>>>when my stock clutch went out.  I know there is no way to adjust 
the
>>>>point of friction (where the clutch engages,in relation to pedel
>>>>depress).  My question is has any one had experience with a
>>performance
>>>>clutch that didn't "act" right? What was wrong? What did you do?
>>>>
>>>>          JR
>>>>
>>>>
>>>>
>>>>
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