[DeTomaso] ABS Calipers vs. NON-ABS Calipers

[Ken Green]

Goran,
 
    I asked the tech guys from Brembo about carbon ceramic rotors, and they said something very similar to your comments.  You have to have everthing designed to handle a very high heat transfer rate to carry the heat away from the light rotors, or you will have big problems with everything in contact with the rotors.  They said you cannot just mount carbon ceramic rotors without major mods to the suspension to handle the heat.
 
Ken

--- On Thu, 6/18/09, Göran Malmberg <hemipanter at hemipanter.se> wrote:


From: Göran Malmberg <hemipanter at hemipanter.se>
Subject: SV: [DeTomaso] ABS Calipers vs. NON-ABS Calipers
To: "'Ken Green'" <kenn_green at yahoo.com>, detomaso at realbig.com, JDeRyke at aol.com
Date: Thursday, June 18, 2009, 9:43 AM


If we like the look of big brakes there is one way of doing this.
By quite oversized rotors, not to important how big, but big
enough to fill the 18" wheels. Then fairly big callipers that has 
bigger than normal size pads. Then run pure stock soft pads! 
Those pads are made to work from cold. Then we have a brake system
that will perform pretty well even on track since the size makes
it runt pretty cool even there. AND a great look!!!

On an all out race car things can not be oversized in this manner
or built with this sort of philosophy. Therefore more cooling and
pads with another working temperature are used. The whole system
must be MATCHED for WORKING balance. Which is NOT the case with the
mentioned idea of mine. Okay, the breaking BALANCE must be matched.

Goran

-----Ursprungligt meddelande-----
Från: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com]
För Ken Green
Skickat: den 18 juni 2009 18:14
Till: detomaso at realbig.com; JDeRyke at aol.com
Ämne: Re: [DeTomaso] ABS Calipers vs. NON-ABS Calipers

Jack,
 
    The 996 non-Turbo calipers use a 1.10 thick front and smaller rear
rotor, and after we finish the 996 Turbo caliper version we plan to make
the brackets ect for plain 996.  The reality is probably that very few
of us "need" this stuff, we just "want" it.  The main benefit is
actually having a brake system engineered for long term street use in a
very similar car.
 
Ken
 

--- On Thu, 6/18/09, JDeRyke at aol.com <JDeRyke at aol.com> wrote:


From: JDeRyke at aol.com <JDeRyke at aol.com>
Subject: Re: [DeTomaso] ABS Calipers vs. NON-ABS Calipers
To: kenn_green at yahoo.com, detomaso at realbig.com
Date: Thursday, June 18, 2009, 12:11 AM


In a message dated 6/17/09 3:51:17 PM, kenn_green at yahoo.com writes:

> With all due respect, I doubt if any individual or vendor has even
close 
> to the development time Porsche and Brembo put into the specification,

> design and testing of these calipers on a car with very similar 
> requirements, which is a nearly 200 MPH car.  So while some adaptation
is required, that 
> is minor compared to selecting the right caliper to start with.
> 
Agreed. FWIW, we've long used 911-S Porsche alloy front calipers (made
by 
ATE) in the rear of our Pantera, with Brembo vented rotors & Porterfield
R4-S 
pads. When we suddenly lost the front brake circuit in our stock master 
cylinder on the way to 'Vegas one year, Judy was driving and she managed
to 
keep up with the rather rapid Nor-Cal Pantera caravan through the Sierra

twisties, on the big rear calipers alone. I actually hadn't realized
there was a 
problem until I moved the car at a lunch stop....They'd been on the car
for 
quite a few years but that episode sold me on Porsche calipers and
Brembo 
vented rotors. Problem with your big 996 calipers is, they're designed
for a 
1.25" thick rotor, which I just don't need in our car. FWIW-J DeRyke



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