[Fot] laycock clutch question

[fubog1]

 To physically test the action of the clutch, you can set them up on a flywheel sitting on a chassis scale pad, in a press, and measure the load as you pump it up.When it gets to the release point the pressure will be max and then drop off quickly as the plate overcenters.(You can slip a feeler gauge in there to tell the exact release point.)
The thickness of the disc directly affects the geometry that the PP has to work within by design.If the disc is too thin, there will be weak clamping force and it'll slip, and it will take a "long" pedal to release.If too thick, the release will be too high and it will probably slip under load.Generally if I use a thicker disc, I shim the difference between it and a stock disc, and check it in the press if any question.Glen
 
 
-----Original Message-----
From: Barr, Scott via Fot <fot at autox.team.net>
To: Phil Gott <vfracing at aol.com>; van.mulders.marcel at telenet.be <van.mulders.marcel at telenet.be>; fot at autox.team.net <fot at autox.team.net>
Sent: Fri, May 24, 2019 8:56 am
Subject: Re: [Fot] laycock clutch question

#yiv9840522145 #yiv9840522145 -- _filtered #yiv9840522145 {panose-1:2 4 5 3 5 4 6 3 2 4;} _filtered #yiv9840522145 {font-family:Calibri;panose-1:2 15 5 2 2 2 4 3 2 4;} _filtered #yiv9840522145 {panose-1:2 11 5 2 2 2 2 2 2 4;} _filtered #yiv9840522145 {font-family:Verdana;panose-1:2 11 6 4 3 5 4 4 2 4;} #yiv9840522145 #yiv9840522145 p.yiv9840522145MsoNormal, #yiv9840522145 li.yiv9840522145MsoNormal, #yiv9840522145 div.yiv9840522145MsoNormal {margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:New serif;} #yiv9840522145 a:link, #yiv9840522145 span.yiv9840522145MsoHyperlink {color:blue;text-decoration:underline;} #yiv9840522145 a:visited, #yiv9840522145 span.yiv9840522145MsoHyperlinkFollowed {color:purple;text-decoration:underline;} #yiv9840522145 p.yiv9840522145msonormal0, #yiv9840522145 li.yiv9840522145msonormal0, #yiv9840522145 div.yiv9840522145msonormal0 {margin-right:0in;margin-left:0in;font-size:12.0pt;font-family:New serif;} #yiv9840522145 span.yiv9840522145EmailStyle18 {font-family:sans-serif;color:#1F497D;font-weight:normal;font-style:normal;} #yiv9840522145 .yiv9840522145MsoChpDefault {font-size:10.0pt;} _filtered #yiv9840522145 {margin:1.0in 1.0in 1.0in 1.0in;} #yiv9840522145 div.yiv9840522145WordSection1 {} #yiv9840522145 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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