Date: Mon, 24 Dec 2007 23:27:20 -0500
Reply-To: robert feller <syncro.carboncow@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: robert feller <syncro.carboncow@GMAIL.COM>
Subject: Re: lost brake line...
In-Reply-To: <003d01c846ad$60fba450$6401a8c0@TOSHIBALAP>
Content-Type: text/plain; charset=ISO-8859-1
Does anyone know if there is ever corrosion ahead of the "t" valve?
Shawn
On Dec 24, 2007 11:19 PM, Scott Daniel - Shazam <scottdaniel@turbovans.com>
wrote:
> You might be thinking of the line pressure for the rear brakes AFTER the
> brake limiting valve in the front. That is in the Bentley book.
>
> There's no reason they'd mention that max pressure that's ever likely to
> be reached.
>
>
>
> I think I might have gotten that number from a racing brake shop I dealt
> with for a while over a rear disc brake setup on a syncro that just did not
> produce the stopping power I expected. We went over everything ....pedal
> ratio, master cylinder piston diameter, caliper piston diameter, rear brake
> cylinder diameter etc........along in that process somewhere this racing
> brake engineer guy told me that going extremely high on brake line pressure
> to produce more stopping power was not a good thing.
>
> It could be some other value than 2,000 psi. I tend to think in
> principles of what works and not so much in absolute numbers, but if I was
> guessing on a test, that's the number I would name.
>
> Scott
>
>
>
> -----Original Message-----
> *From:* robert feller [mailto:syncro.carboncow@gmail.com]
> *Sent:* Monday, December 24, 2007 8:02 PM
>
> *To:* Scott Daniel - Shazam
> *Cc:* vanagon@gerry.vanagon.com
> *Subject:* Re: lost brake line...
>
>
>
> a heck I did mean to say that I felt Bentley mentioned a lower pressure
> then what you stated, but I could be very wrong w/o having one near me.
>
> On Dec 24, 2007 11:00 PM, robert feller < syncro.carboncow@gmail.com>
> wrote:
>
> I would agree to error on the side of caution with this one for sure. I do
> believe (although I don't have it with me) that the brake lines are under
> only hundreds of lbs of pressure, but I could be brain farting.
>
> Now are not the connection to the valve block and brake a compression
> fitting too?
>
>
>
> On Dec 24, 2007 10:56 PM, Scott Daniel - Shazam <scottdaniel@turbovans.com >
> wrote:
>
> Particularly in the vw world there is a lot of poor or mis-information.
>
> The author would have you think compression fittings in brake lines are
> just fine.
>
> It's a hack repair.
>
> Might work for a good long time even, but it's not right.
>
> There's up to 2,000 psi I believe in brake lines.
>
>
>
> -----Original Message-----
> *From:* robert feller [mailto:syncro.carboncow@gmail.com]
> *Sent:* Monday, December 24, 2007 7:38 PM
> *To:* Scott Daniel - Shazam
> *Cc:* vanagon@gerry.vanagon.com
> *Subject:* Re: lost brake line...
>
>
>
> Gang,
>
> Just to answer my curious mind, you guys mention a "no no" for compression
> fittings. I found this site on the topic (vw too!) and he is juntioning new
> and old lines together: http://volksweb.relitech.com/brakeln.htm
>
> He talks about compression fittings, is this the "no-no" you metion?
>
> Shawn
>
> On Dec 24, 2007 10:05 PM, Scott Daniel - Shazam <
> scottdaniel@turbovans.com> wrote:
>
> Hey Shawn, you've seen Ken's post by now. Metric brake lines are
> 'findable'
> sometimes.
> A nice small bending too is nice to have.
> With luck you can find a 'bolt on' metric line of close to the right
> length.
> If it has to be a little too long that's fine if you mount it properly.
> And as ken said, using compression sleeve junctions is never kosher in
> brake
> lines.
> If you end up making a line yourself and need to flare the ends,
> There are two kinds of flare - single and double, or bubble as ken called
> it.
> A single flare tool costs 10 bucks, but will not work at all for your
> system.
> If you need a double flare end, sometimes you can get a shop with that
> capability to do it for you for a few bucks.
> Hopefully you'll be able to find a metric line of the right length and
> size.
>
> And you should check all the other lines, though it might be hard o see
> through the rust and crude.
> Scott
>
>
>
> -----Original Message-----
> From: Vanagon Mailing List [mailto: vanagon@gerry.vanagon.com] On Behalf
> Of
> robert feller
>
> Sent: Monday, December 24, 2007 6:36 PM
> To: vanagon@GERRY.VANAGON.COM
>
> Subject: Re: lost brake line...
>
> Thanks Scott, that is the info I was looking for. I was hoping it didn't
> run
> all the way to the master cylinder and thus some real fun with a line that
>
> far!
>
> So tell me about brake lines.All the same different diameters? Easily
> mailable it seems from you comments. Any special little bender tools to
> get
> the turns "just right"?
>
> Shawn
>
> On Dec 24, 2007 8:52 PM, Scott Daniel - Shazam <scottdaniel@turbovans.com>
> wrote:
>
> > Just heat the line upstream of the hole, and bend it over and hammer it
> > flat, so it's closed off.
> > Then proceed on 3 brakes.
> > Or...........the line has to go to a T junction or some fitting. .
> Find
> > that, perhaps two feet or so from the left front area where it joins
> onto
> > the hose, remove it, take it to a flaps and match it up, replace and
> > bleed.
> >
> > 'medium hard' , that's how hard it is to do - lol ! Since it sounds
> like
> > it
> > failed from rust, the ends might be very, very rusted and you should
> start
> > spraying those with PB Blaster penetrating oil right now. And do it
> like
> > every few hours until you start to work on it.
> >
> > You absolutely need a tubing nut wrench. 11 mm I think.
> > Scott
> > www.turbovans.com
> >
> > -----Original Message-----
> > From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com ] On Behalf
> Of
> > robert feller
> > Sent: Monday, December 24, 2007 5:30 PM
> > To: vanagon@GERRY.VANAGON.COM
> > Subject: lost brake line...
> >
> > Nice, I own three cars and all three had something happen to them this
> > week.
> > Relying on the syncro to get me around and to work...but tonight the
> pedal
> > went to the floor.
> >
> > Looks like a Ohio rust and a break line went in the front left wheel
> well.
> > Corrosion beyond belief.
> >
> > Although it's current location makes it almost impossible to work on I'm
> a
> > strong DIYer. How rough is repair of the front brake line going to be
> and
> > what does the procedure entail? The Bentley is not currently where I am
> at
> > to review.
> >
> > --
> > Shawn Feller
> > Ohio
> > www.carboncow.com
> >
> >
>
>
> --
> Shawn Feller
> Ohio
> www.carboncow.com
>
>
>
>
> --
> Shawn Feller
> Ohio
> www.carboncow.com
>
>
>
> --
>
>
> Shawn Feller
> Ohio
> www.carboncow.com
>
>
>
>
> --
> Shawn Feller
> Ohio
> www.carboncow.com
>
--
Shawn Feller
Ohio
www.carboncow.com
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