[DeTomaso] ZF Mounted Inboard Brakes

Tue Jun 5 21:00:30 EDT 2012

I had a 116 series Alfa and (briefly) an E-type Jag.  Inboard mounted discs are a bad idea whose time came and went-- the unsprung weight improvement pales in the face of the cooling issue.

-----Original Message-----
From: Tomas Gunnarsson <guson at home.se>
To: De Tomaso List <detomaso at realbig.com>
Sent: Tue, Jun 5, 2012 2:09 pm
Subject: Re: [DeTomaso] ZF Mounted Inboard Brakes

116 series Alfa Romeos have inboard rear brakes. This is on a front engine,
ighter and less powerful car than the Pantera. When brake cooling becomes
n issue the first major mod is to adapt vented rotors in the stock
osition. The stock rotors are around 250 mm in dia BTW. Next step is moving
he rotors to the wheels where cool air is readily available and rotor size
s by all practical means unlimited. Kinda the opposite of what was done
ere. This seems more like a show car modification than a track car
mprovement.
Tomas
-----Original Message-----
rom: detomaso-bounces at realbig.com
mailto:detomaso-bounces at realbig.com]On Behalf Of
ichael at michaelshortt.com
ent: den 5 juni 2012 22:16
o: Julian Kift
c: asajay at asajay.com; De Tomaso List
ubject: Re: [DeTomaso] ZF Mounted Inboard Brakes

MHO it's not a modification with any real advantage, lots of work and
xpense, damage to to the ZF, and a much worse rotor cooling issue.
The advantages in a 100% Sports Racing car are moving the mass closer to
enter, and for endurance cars, a much faster pad change.
But racing cars care about weight, to really be this anal about weight, you
hould also lose the passenger seat, use an AL racing shell for the driver,
emove the radio, the A/C, the carpet,
he door panels, replace the glass with Lexan, the headliner, use a 50%
ess heavy gel cell battery, no bumpers, have CF doors, hood, deck lid, and
n AL block.
Most of which would be more beneficial that having inboard brakes.
But if you have unlimited money and want to impress other Pantera owners (
ince we're going to be the only ones to know the difference ), it would be
eat to see what was fabricated.
Michael Shortt

On Tue, Jun 5, 2012 at 3:55 PM, Julian Kift <julian_kift at hotmail.com> wrote:
>
 IIRC it requires some modifications by way of machining or welding to the
 ZF case, which maybe a deterent to many.

 Julian

 > Date: Tue, 5 Jun 2012 12:37:33 -0700
 > From: asajay at asajay.com
 > To: detomaso at realbig.com
 > Subject: Re: [DeTomaso] ZF Mounted Inboard Brakes
 >
 > Yes, Ted Mitchell showed this off in the Ballroom of a past Las Vegas
 > Fun Rally some years ago. I have photos of it somewhere. I don't
 > think it turned into a sought after mod.
 >
 > Asa Jay
 >
 > Quoting The DeTomaso Registry Guy <detomasoregistry at gmail.com>:
 >
 > >
 > >
 > > The other day I was asked to post photos of a cable shifter for our
F.
 > >
 > >
 > >
 > > Then Saturday I took a sporty drive thru the mountains in a vintage
 Jag.
 > >
 > >
 > >
 > > These two things reminded me of the topic of inboard brakes, a la
 Jaguar. I
 > > remembered
 > >
 > > seeing a ZF with the brake rotor assembly mounted on the ZF, so I
 started
 > > searching for photos.
 > >
 > > I think this was Ted Mitchell's work, not sure.
 > >
 > >
 > >
 > > ZF mounted brakes has been discussed some time ago, but in searching
 the
 > > archives
 > >
 > > I could not find the thread.
 > >
 > > I guess the archives search function still sucks, I even used a
 google-based
 > > deep mine
 > >
 > > search technique without success. Anyway.
 > >
 > >
 > >
 > > One advantage of this design is that it moves the rear brake weight
 from the
 > > un-sprung
 > >
 > > side of the equation to the sprung side.
 > >
 > >
 > >
 > > One disadvantage is that it adds heat to the ZF, it is also a bit
 > > complicated.
 > >
 > >
 > >
 > > While adding vintage photos to the DeTomaso Registry, I stumbled
cross
 > > photos of a so-equipped
 > >
 > > ZF. I'm adding these photos to the ever-growing section on our beloved
 ZF,
 > > find the link under the welcome photo.
 > >
 > >
 > >
 > > http://www.provamo.com/Members/ProvaMoMemMain.asp
 > >
 > >
 > >
 > > Chuck Melton
 > >
 > > (The Registry Guy)
 > >
 > >
 > >
 > >
 > >
 > > _______________________________________________
 > >
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 > >
 >
 >
 >
 > --
 > Asa Jay Laughton - sent from somewhere other than home
 > ******************************************************
 > http://www.racingagainstautism.com
 > http://www.teampanteraracing.com
 >
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