[Fot] laycock clutch question

[fubog1]

 The flywheel has to have locating dowels to maintain concentricity with the clutch housing.The dowels don't normally get any shear load on them, they aren't drive-dogs, the bolt clamping force holds it all in place and clamped down tight.Yes hard shims, soft can crush down and lose bolt torque after awhile.
If the PP loosens up, the locating dowels won't do much to keep it from coming apart...
Glen
 
 
-----Original Message-----
From: John Styduhar via Fot <fot at autox.team.net>
To: Van Mulders Marcel <van.mulders.marcel at telenet.be>
Cc: fot <fot at autox.team.net>
Sent: Fri, May 24, 2019 11:13 am
Subject: Re: [Fot] laycock clutch question

Most good flywheels have locating dowels for the PP as added shear strength.    
On Fri, May 24, 2019 at 10:50 AM van.mulders.marcel--- via Fot <fot at autox.team.net> wrote:


Strongest solution is when the area where the feet are located are a bit lower than the friction area of the flywheel : then the PP is strongly located and eventually the shims should be trimmed . When the flywheel is entirily flush, the location of the PP is less secure.If hard steel shims are used, I think this will not be a weak spot?Marcel.Van: "Scott Barr" <sbarr at McCarty-Law.com>
Aan: "Phil Gott" <vfracing at aol.com>, "van mulders marcel" <van.mulders.marcel at telenet.be>, "fot" <fot at autox.team.net>
Verzonden: Vrijdag 24 mei 2019 14:56:15
Onderwerp: RE: [Fot] laycock clutch question

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.PhilSent 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 GottSent 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 ThanksBrian 26A GT6+Brian Schirano
585-305-0349 Cell 
BSchirano at yahoo.com

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