[DeTomaso] Dual master cylinnders

[boyd casey]

I have brembo 4 piston calipers with 13.25" rotors and the CNC dual master
cylinders with a balance bar and I kept my booster. My logic was that I was
going form a single cylinder to dual 3/4 " cylinders and would potentially
require twice the force ( moving twice the volume of brake fluid with the
same amount of physical movement .) My theoretical physics may be wrong but
my brake effort has been dramatically reduced.
Boyd

On Fri, Sep 10, 2010 at 5:32 PM, <mikeldrew at aol.com> wrote:

>
> Mark wrote;
>
>
> I'm looking for some feedback from those who use CNC dual master
> cylinders.
>
> I currently have Quella's  4 piston Wilwood calipers.
>
> Are you using the vacuum booster or not?
>
> Comments and suggestions.
>
> >>>Last year, I drove Geoff Peters' 1972 GT5 conversion from London to
> Modena and back.  It has Quella's brake package for 15 inch wheels, and
> dual CNC masters with no booster.  The brakes worked but it took an
> uncomfortable heave on the pedal to get things happening.  As it is a
> RHD car, the pedal actuates a cross shaft which then presses on the
> masters (which are still on the left side of the chassis).  After much
> debate, he agreed that he really should put the booster back in, as the
> pedal pressure is excessive, and he is literally bending the shaft like
> a torsion bar when he brakes hard.
>
> If your question is, "To booster, or not to booster?" I would
> definitely urge you to go for the booster.
>
> Mike
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