[Healeys] Ford versus Ferrari

Thu Dec 19 17:14:31 MST 2019

More grist for the mill:

BRAKES: As noted before, brakes have been "a sticky problem. Nobody at Ford
or Shelby American will say that the brakes are adequate yet-but rather
that the driver must be careful with them. Last year the- radial-spoked
rotors (vented discs) cracked regularly. Curved spokes this year have
reduced failures somewhat but not completely, and metal coatings tried
earlier failed to live up to expectations. With 653 sq in. of swept area,
there is no room for larger discs or pads. What happens in use is that the
rotors get tremendously hot during' braking and then cool very rapidly as
speed builds.

Because pad wear and rotor cracking were insoluble, at least for this year,
it seemed that methods had to be found for replacing brake parts quickly.
Two neat solutions along this line came forth from the racing teams. Shelby
American head Phil Remington devised quick-change brake pad retainers which
allow rapid removal and replacement of the pads. A remarkable new feature
was conceived by John Holman of Holman-Moody during the year's development:
quick change discs! This is a first, and surely will start a trend, The
disc hats are outboard of the hub flange and held in place by the wheel
studs, the caliper and the wheel itself. Thus when the wheel is removed,
and the caliper swung away (which requires only the loosening of two
bolts), the disc may be snatched off and a new one slipped on in seconds.
Design details and development work on this item were carried out by Ford
and Shelby American engineers. Disc diameters remain 11.6 in front and
rear, and Girling BR single calipers are used at both ends of the car.

Source:  http://sportscars.tv/Newfiles/66fordgtdevewin.html

On Wed, Dec 18, 2019 at 1:33 PM WILLIAM B LAWRENCE <ynotink at msn.com> wrote:

> It occurs to me that another option would have been a floating caliper
> assembly in which they could have kept the hydraulic system in place and
> sealed on the chassis and been able to remove and replace the caliper and
> pads in a unit.
>
> They must have had something unusual going on which gave them enough of an
> advantage to cause Enzo to lodge a complaint.
>
> If anyone ever gets close enough to one of these cars to check it out it
> would be interesting to have a report.
>
> Bill Lawrence
> ------------------------------
> *From:* Healeys <healeys-bounces at autox.team.net> on behalf of Perry Small
> via Healeys <healeys at autox.team.net>
> *Sent:* Wednesday, December 18, 2019 5:19 PM
> *To:* Bob Spidell <bspidell at comcast.net>
> *Cc:* Healeys at autox.team.net <Healeys at autox.team.net>
> *Subject:* Re: [Healeys] Ford versus Ferrari
>
> There are different themes that play
> out during the movie for sure. I’ll once
> again vote for the father / son relationship
> and “the Perfect Lap”.
> Perry
>
> Sent from my iPhone
>
> On Dec 18, 2019, at 6:51 AM, Bob Spidell <bspidell at comcast.net> wrote:
>
>  OTOH, the 'Hollywood treatment' broadens the appeal; my girlfriend, who
> doesn't have a gearhead strand in her DNA enjoyed the movie (which makes
> for a more pleasant after-movie experience).  I also liked that they made
> Enzo Ferarri look like a jackass which, from all I've heard, he was.  I'm
> sure most of us on this list would prefer a technical documentary on
> exactly how the cars were designed, built, tuned and driven but then you'd
> have an audience of maybe a couple thousand people.
>
> ps.  I thought the 'clunk' they Foleyed-in for gearchanges didn't sound
> realistic, but I've never driven a GT40 so who knows.
>
>
> On 12/18/2019 6:38 AM, Stephen Hutchings wrote:
>
> I too remember that in the film they seemed to be swapping out the entire
> upright assembly.
> If you want to watch a good film about that era, see “Shelby American” on
> Netflix.
> I wasn’t at all impressed by “Ford VS Ferrari”…just another Hollywood
> treatment full of ridiculous inaccuracies.
> They’re still using that old 1950’s “B” movie technique where two drivers
> are supposed to be approaching the end of the Mulsanne straight at very
> high speed, and they have time to glare at one another!
> And apparently all you have to do to overtake is gear down and press the
> accelerator.
> I know it’s Hollywood, but sheesh!
>
> Stephen, BJ8
>
> On Dec 18, 2019, at 12:51 AM, WILLIAM B LAWRENCE <YNOTINK at msn.com> wrote:
>
> In the movie, although there wasn't much technical explanation, it
> appeared that they removed and replaced the entire suspension upright
> assembly with new stub axles, hubs, rotors and calipers in place. I was
> thinking they must have used some kind of quick connect on the brake lines
> with a quick bleeder in place.
>
> Bill Lawrence
> BN1 #554
> ------------------------------
>
>
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