[DeTomaso] myth of Pantera braking force limiter?

[pantdino at aol.com]

I looked at the website.
Clearly Steve has it wrong on this one.

I think I'll put the system together and see how it brakes. If it seems to lock up in front early I'll put a valve in. 

Thanks for the info!!

Jim






-----Original Message-----
From: SOBill at aol.com
To: pantdino at aol.com
Cc: detomaso at realbig.com
Sent: Sat, Mar 20, 2010 2:36 pm
Subject: Re: [DeTomaso] myth of Pantera braking force limiter?


Jim,
 
There is no myth about a brake force limiting component on a stock Pantera.
 
There are two pressure related components of the brake system in the front trunk of a stock Pantera.
 
One component  is the front/back brake pressure proportioning valve. This valve is plumbed so as to reduce the pressure to the front brakes with respect to the rear brakes after a certain threshold pressure is reached. This pressure reduction to the front brakes, which is backwards from every other application of a brake proportioning valve, is so the Pantera front brakes are more nearly balanced with the stopping power of the rear brakes. The pressure characteristics of this valve were tested and are described at http://www.panteraplace.com/page199.htm. 
 
The second component mounts the brake light switch. This component also contains a shuttle valve and an electrical switch. The shuttle valve senses the brake line pressure of the front and rear brake systems. If the pressures are grossly different due to a major pressure loss in one system, the shuttle valve will move so as to close the electrical switch and light a brake failure warning light on the dashboard.
 
Have fun,
 
SOBill Taylor
sobill at aol.com 
 

In a message dated 3/20/2010 1:54:16 P.M. Pacific Daylight Time, pantdino at aol.com writes:


I went by Steve Wilkinson's today to get a brake caliper rebuild kits and he said there is no front / rear brake force limiter on a stock Pantera. The square thing is just the brake warning switch and the cylinder is a pulsation absorber, so if rotors are out of tolerance you don't feel it in the pedal.


So if I remove the extra stock caliper on each rear wheel I should not have to put a valve in,

correct?

Jim Oddie


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