[DeTomaso] Pressure Plates

[John Taphorn]

Goran inquires

> Now, the point is, as this plate need LESS pressure
> on the arms there should be only half the load on
> the crank bearing.

Interesting, at first I thought you all wet; yet, upon further 
contemplation, me thinks you correct.

JT
----- Original Message ----- 
From: "Göran Malmberg" <hemipanter at hemipanter.se>
To: <JDeRyke at aol.com>; <wdemelo at cogeco.ca>; <detomaso at realbig.com>
Sent: Monday, July 20, 2009 5:02 PM
Subject: Re: [DeTomaso] Pressure Plates


>I was figuring about this clamping force a bit.
> Somone talked about heavy pressure plate springs
> putting loads on axial crank bearings. Therefore
> never depressing the clutch during start ups.
> I was putting a new heavy diaphragm clutch in my
> car and noticed that the leverage of the multiply
> "arms" was way greater than that of a long style
> plate. Now, this needed a slave that
> had 1 and 1/2 of throw!!! Making the pedal back
> to stiff again.
>
> Now, the point is, as this plate need LESS pressure
> on the arms there should be only half the load on
> the crank bearing. But twice the arm travel.
> Of course, the load within the clutch combo is still
> VERY great therefore needing a solid housing.
>
> Not bad for saving crank and release beraings, isn't
> it?
> Goran
>
>
> -----Ursprungligt mdelande-----
> Från: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com]
> För JDeRyke at aol.com
> Skickat: den 20 juli 2009 19:42
> Till: wdemelo at cogeco.ca; detomaso at realbig.com
> Ämne: Re: [DeTomaso] Pressure Plates
>
> In a message dated 7/19/09 6:40:29 PM, wdemelo at cogeco.ca writes:
>
>> What has greater clamping force.....3 finger or diaphram type?
>>
> Doesn't matter. Clamp force is set by spring pressures. But generally,
> diaphragm pressure plates are easier to push in for a given clamp force,
> due
> mostly to leverage. Cheers- J Deryke
>
>
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