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Re: dual braking system

To: PilotRob@webtv.net (Robert E. Shlafer), racerbob70@yahoo.com (Bob Van Kirk)
Subject: Re: dual braking system
Date: Thu, 15 May 2003 11:43:33 -0700
Cc: spridgets@autox.team.net
References: Bob Van Kirk <racerbob70@yahoo.com>'s message of Wed, 14 May 2003 19:35:46 -0700 (PDT)
Cap'n (and others following this discussion),

Nope, not diagonal. Circuits are front and rear and probably set up the
same way front and rear without the valve.

Also, I don't think the system is designed to conpensate for a leak, but
rather a loss of pressure.

The proprtioning valve has 5 connections, two from the MC, one to each
front wheel and on out to the rear tee. One MC line feeds the front and the
other the rear and front and rear are supplied from corresponding feeds. If
pressure drops from one supply, it will force the shuttle valve to pop to
the weak side allowing fluid to supply both branches. Unless someone can
explin otherwise, I think you are still in trouble if you spring a leak
somewhere.

My vintage race Bugeye came equipped with the tandem system WITHOUT the
proportioning valve. Because is leaked a bit when I got it, I removed it to
rebuild it. What I dicovered was that whoever rebuilt it before never
connected the link pin between the front and rear pistons. That also
explained why I could never bleed the rear brakes and what made me
suspicious as well. That means that my friend had raced ot the whole time
with FRONT BRAKES ONLY! So much for how much the rears do, eh?

At 7:09 AM -0400 5/15/03, Robert E. Shlafer wrote:
>Bob...
>
>As far as I know, each channel works
>diagonally front to back and includes
>one wheel from each side.
>
>'Course, I do not know how your buddy's
>race car was rigged.....
>
>
>
>
>Cap'n. Bob
>     '60 :{)

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