[DeTomaso] Pantera - Brakes

[Tomas Gunnarsson]

At the end of the day you probably want less than 50% of the total brake
power available at the rear wheels. As the stock brake bias based on piston
area is in the 2:1 (f:r) range you want the front circuit to reduce around
50% at full retardation.

Tomas

-----Original Message-----
From: detomaso-bounces at realbig.com
[mailto:detomaso-bounces at realbig.com]On Behalf Of Julian Kift
Sent: den 10 december 2011 21:44
To: mikeldrew at aol.com; hoppe1 at cox.net; cengles at cox.net;
rickrows at hotmail.com
Cc: De Tomaso List
Subject: Re: [DeTomaso] Pantera - Brakes


How much does the proportioning valve proportion? I seem to recall hearing
something around 70% to rear, which will have significant impact on brake
pedal feel and the pressure required to get the fronts to lock up.

Maybe it's time to throw some science into the OEM theory and plug all the
available stock data into one the available brake efficiency/sizing
calculators.

Julian

> From: MikeLDrew at aol.com
> Date: Fri, 9 Dec 2011 19:15:06 -0500
> To: hoppe1 at cox.net; cengles at cox.net; rickrows at hotmail.com
> CC: detomaso at realbig.com
> Subject: Re: [DeTomaso] Pantera - Brakes
>
>
> In a message dated 12/9/11 15 36 16, hoppe1 at cox.net writes:
>
>
> > I know Mike thinks you should keep the front brake pressure reducer.
> > I would throw it away and replace it with an adjustable proportioning
> > valve.
> > I have driven a car without the stock pressure reducer and I thought the
> > brakes were a lot better and agree the front will lock up first.
> > But better is better and you don't have to push so hard to lock them up.
> > Adding an adjustable proportioning valve to the front would be better
then
> > the old pressure reducer by allowing the adjustment.
> >
>
> >>>I agree completely.
>
> I wouldn't say it's accurate that I advocate keeping the stock valve, so
> much as I would say that I don't advocate removing it, without replacing
it
> with something better.   Removing it entirely is a bad idea.   Leaving it
in
> place is probably fine as long as it's functioning properly.   An
adjustable
> valve is probably the optimal solution.
>
> Mike
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