Single brake line to rear ok?

[scirocco16vr32 at gmail.com (Chris Bennett)]

I agree... that would be very bad to mess with.
Comparatively I don't have much knowledge or experience against 95% of the 
people on this list I have worked with the brakes quite a bit and what Dan 
said is absolutely true.
 Sorry we couldn't give you better news.
Chris

 On 5/7/05, Dan Bubb <jdbubb@ix.netcom.com> wrote: 
> 
> Back in the day VW made a big deal about the "dual diagonal" braking 
> system.
> The typical solution is to have a rear brake and a front brake circuit. On
> front drive cars because of the heavy front weight bias if the front 
> circuit
> failed and only the back brakes were operating you'd have on hell of a 
> long
> stopping distance (and probably sideways with the backs locked).
> So, one front, one rear so the car would still stop in a reasonable 
> distance
> if one circuit failed.
> And, of course, you don't want both brakes on one side since that would
> pitch the car sideways also.
> So, one front and the opposite rear for some semblance of balanced braking
> with a failure.
> In any event you do not want to interconnect the two braking circuits 
> cause
> if one fails they both fail!
> And each circuit should have two brakes connected to it.
> So, I'd hook it up like VW did from the factory with two separate
> proportioning valves.
> Don't know how the Audi gets away with one line to the rear. Either they
> have a front circuit, rear circuit setup or it has some interaction with 
> the
> all wheel drive.
> That's my long winded .02!
> Dan
> 
> ----- Original Message -----
> From: "Mark F." <mk1mark@gmail.com>
> To: "Scirocco-L" <scirocco-l@scirocco.org>
> Sent: Saturday, May 07, 2005 3:22 AM
> Subject: Single brake line to rear ok?
> 
> I'd like to install an adjustable proportion valve inline to the rear
> brakes on my 75 track/street car (which has a full 16v brake system).
> 
> Can I just run one brake line to the rear, and "T" it off to both rear
> brakes (after the prop valve)?
> 
> My Audi CQ comes like this from the factory...
> 
> Would I "T" both rear lines just off the master cylinder to a single
> line, or use one rear line and cap off the other (at the MS)?
> 
> Any input is much appreciated...
> 
> Thanks!
> 
> Mark.
> 
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