Is it correct to assume that a single cylinder, dual piston master as
commonly found in modern braking systems would similarly require increased
pedal pressure? In any case, I'm not sure I understand the restrction on
fitting such a master, sourced inexpensively from a Toyota for instance,
when the rules seem to allow expensive custom systems from aftermarket
manufacturers that were never available to racers "back in the day". Am I
being naive? What also of employing brake boosters? They were available as
early as 1969 or thereabouts if I'm not mistaken, and though obviously not
used on the earlier cars have been fitted to them for street applications
with good results for some time.
Steve P
----- Original Message -----
From: "Greg Solow" <gregmogdoc@surfnetusa.com>
To: "Joe Curry" <spitlist@cox.net>; <WEmery7451@aol.com>;
<markvaden@gmail.com>; <fot@autox.team.net>
Sent: Saturday, November 03, 2007 6:06 AM
Subject: Re: [Fot] dual circuit brakes on a tr4
> The pedal effort required to operate the brakes is determined by the area
of
> the master cylinder or cylinders in relation to the area of the wheel
> cylinders or caliper pistons. So using two master cylinders of the same
size
> gives WAY more piston area and the effort required will go up damatically.
> When we put a Tilton balance bar setup on Bill Fink's Morgan SLR a number
of
> years ago we used two 5/8" masters and that still required more pedal
effort
> than the stock single 3/4" master that a Morgan uses. I understand that
> someone, possibly Wilwood now makes 9/16" Master cylinders. They would be
> closer in total piston area the a singe 3/4 or .700" master.
>
> Greg Solow
> ----- Original Message -----
> From: "Joe Curry" <spitlist@cox.net>
> To: <WEmery7451@aol.com>; <markvaden@gmail.com>; <fot@autox.team.net>
> Sent: Friday, November 02, 2007 10:24 AM
> Subject: Re: [Fot] dual circuit brakes on a tr4
>
>
> >I noticed the same thing when I installed two Single circuit master
> > cylinders and the Tilton balance bar on my Spit. The petal is much
harder
> > and requires more effort to brake than before. I previously had a dual
> > circuit GT6 master cylinder installed and wanted to gain a bit more
> > control
> > on the front/rear balance.
> >
> > Joe C.
> >
> > ----- Original Message -----
> > From: <WEmery7451@aol.com>
> > To: <markvaden@gmail.com>; <fot@autox.team.net>
> > Sent: Friday, November 02, 2007 9:34 AM
> > Subject: Re: [Fot] dual circuit brakes on a tr4
> >> I was surprised the first time out on the track with this system. I
had
> > to
> >> push the brake peddle a lot harder to get the same effect.
> > _______________________________________________
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