[Fot] laycock clutch question

fubog1 fubog1 at aol.com
Fri May 24 11:08:48 MDT 2019 

 If you're using a clutch PP from XXX, and a custom racing disc from YYY, those are the "correct" parts.If you're using a complete off-the-shelf clutch kit, there should be absolutely no adjustment/shimming required.Realize also that we're not "spacing" the PP out any distance, the most I've had to do is shim under .030, usually considerably less.The PP is just a big bellville washer that compresses axially with increasing pressure produced (clamping force) as it's compressed, up until the overcenter point, and the pivot points which determine the arm length ratio result in little travel in the plate (ie shimming it) and a lot on the TO bearing contact end.
In other words the shim required is usually pretty thin, it's almost a matter of fine-tuning a given combination, not to correct another problem...

Glen
If I was in a moment of desperation and that is all I had, I would consider using spacers under the PP, but I think it is better to get the correct parts. 
 
 
 
-----Original Message-----
From: Brian Schirano via Fot <fot at autox.team.net>
To: John Styduhar <johnstydo at gmail.com>; Barr, Scott <sbarr at McCarty-Law.com>
Cc: fot at autox.team.net <fot at autox.team.net>
Sent: Fri, May 24, 2019 12:02 pm
Subject: Re: [Fot] laycock clutch question

not at the desperation point yet, but getting there! Laundry list is getting longer instead of shorter!
26A GT6+, 28 TR6Brian Schirano
585-305-0349 Cell 
BSchirano at yahoo.com 

    On Friday, May 24, 2019, 11:43:07 AM EDT, Barr, Scott via Fot <fot at autox.team.net> wrote:  
 
  I’m trying to think of a time when I was at this stage of putting the car back together and it HADN’T reached a “moment of desperation”  :-)    With my Spit, I raced a pretty heavy schedule.  Running with both VSCDA and Midwestern Council, I could do 10-15 races a year back in the day.  So I was almost CONSTANTLY in thrash mode between April and November.  Which might explain some of my more interesting mechanical failures.    Scott (B.)     From: John Styduhar <johnstydo at gmail.com>
Sent: Friday, May 24, 2019 10:24 AM
To: Barr, Scott <sbarr at McCarty-Law.com>
Subject: Re: [Fot] laycock clutch question    If I was in a moment of desperation and that is all I had, I would consider using spacers under the PP, but I think it is better to get the correct parts.     On Fri, May 24, 2019 at 8:56 AM Barr, Scott via Fot <fot at autox.team.net> wrote: 
I’m curious about Glen’s comment on shimming the pressure plate.  I’ve done that in this situation, using small thin hardened washers.  Seemed to work fine, but that was a seat of the pants gotta-load-this-thing-tomorrow-and-go-racing sort of fix.  Anyone think that solution is a disaster in the making?   Scott (B.)   From: Fot <fot-bounces at autox.team.net>On Behalf Of Phil Gott via Fot
Sent: Friday, May 24, 2019 7:32 AM
To: van.mulders.marcel at telenet.be
Cc: fot <fot at autox.team.net>
Subject: Re: [Fot] laycock clutch question   Marcel, Brian; I agree with Marcel’s last email. If the fingers point inward, your clutch disc is too thick, indicating that the disc and Pressure Plate are incompatible. Best solution is to get a thinner disc or a compatible PP. Hope this clears up any confusion. Phil Sent from my iPhone 
On May 24, 2019, at 7:25 AM, van.mulders.marcel at telenet.be wrote: 
  So we don't agree; maybe, if the fingers end up flat after tightening, it still can be normal, but if they are pointing inwards a bit, it is not correct. You can made a decision by measuring how much the fingers are moving inward when tightening the bolts : if it is more than 3 mm it is not correct and the feel in the clutch pedal won't be normal eather. Marcel. Van:"fot" <fot at autox.team.net>
Aan: "Brian Schirano" <bschirano at yahoo.com>
Cc: "fot" <fot at autox.team.net>
Verzonden: Vrijdag 24 mei 2019 12:19:17
Onderwerp: Re: [Fot] laycock clutch question   Brian; All perfectly normal. Just be sure that the throwout bearing is compatible with the “fingers.” If the fingers are straight the throwout bearing face should be rounded. If the fingers have a crook in them (bent) then the throwout bearing face should be flat. Enjoy your new clutch! Phil Gott Sent from my iPhone 
On May 23, 2019, at 10:23 PM, Brian Schirano via Fot <fot at autox.team.net> wrote: 
Hey Friends   just installed a new to me (rebuilt) laycock PP and a new clutch disc. As I tightened the PP the fingers ended up pretty much flat across, no longer peaked. So when the hydraulics is engaged the throw out will press the clutch fingers deflecting inward (invert from when on the bench). Makes me uncomfortable / doesn't seem right.    Normal / Correct?    am hoping to put the trans back in tomorrow afternoon, comments please   Thanks Brian   26A GT6+ Brian Schirano
585-305-0349 Cell 
BSchirano at yahoo.com 

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