Brake Fluid Equalizer

[Fred Munro]

Hi DeWitt;

The UrS4 has a single rear channel with a proportioning valve. The UrS6 has
dual rear channels with no proportioning valve. This allowed Audi to
eliminate the locking rear diff on the UrS6 and use the much touted EDL
(Electronic Differential Lock). EDL works great unless you're stuck in snow
or something. Then it blows. On the open highway with good traction EDL is
fabulous. Wait a minute..... :)

Fred Munro
'97 S6


-----Original Message-----
From: quattro-bounces at audifans.com
[mailto:quattro-bounces at audifans.com]On Behalf Of DeWitt Harrison
Sent: July 1, 2007 2:42 PM
To: Max Hoepli
Cc: Quattro List
Subject: Re: Brake Fluid Equalizer


I think your idea would be better than the Audi 5k solution of
one proportioning valve plus the left/right thingy valve. The
ur-S4 has separate ABS channels for the rear brakes but
I have never studied one to know if there are additional
proportioning valves.

DeWitt

----- Original Message -----
From: "Max Hoepli" <mhoepli at vif.com>
To: "DeWitt Harrison" <six-rs at comcast.net>
Cc: "Quattro List" <quattro at audifans.com>; <s-car-list at audifans.com>;
<w-t_audifans at yahoogroups.com>
Sent: Monday, June 25, 2007 6:33 PM
Subject: Re: Brake Fluid Equalizer


> In  response to this informative email from Harrison.....Why not have a
> brake line for both the rear left and rear right caliber from the brake
> master cylinder with the rear left and rear right having its own
> proportioning valve?
> [ ... ]


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