[DeTomaso] Any interest in dual (no booster) brake MC

[Ken Green]

There are several people who are using dual MCs with no booster and are very happy with them.  Articles on the Internet also agree with that.  One variable is the brake pads.  If you use a racing pad that has to get hot to work well, it could be part of the problem.  The rotor diameter also.  The 996 Turbo calipers have 44 and 36 mm pistons in the front and 30 and 28 mm pistons in the rear, and the pads have a large surface area.  Theoretically, the surface area is not part of the equation, but maybe in practice it helps?
 
Ken

From: David Nunn <dnunn at telus.net>
To: detomaso at realbig.com 
Sent: Thursday, April 12, 2012 7:55 PM
Subject: [DeTomaso] Any interest in dual (no booster) brake MC

I tried running without a booster for a couple of years but just couldn't
live with the pedal pressure, so I'm putting the booster back in. I have
StopTech calipers, which are copies of Porsche calipers, and a CNC dual
master cylinder/balance bar set-up. Before giving up on manual brakes, I
tried a few different M/C sizes but even with the smallest ones, the pedal
pressure was still just too high. For vacuum, I'm using an OEM pump from an
electric car. It's actually designed to provide vacuum for power brake
boosters, it's compact and it's quiet.  I know of one Pantera owner with
manual brakes who claims his pedal effort is fine but he's running calipers
with HUGE 2" (x4) pistons and a tiny M/C. He must have very long pedal
travel.  

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