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Re: Carpe Brakeum

To: spitfires@autox.team.net
Subject: Re: Carpe Brakeum
From: David Brock <dmbrock@nm.cbc.ca>
Date: Tue, 03 Oct 2006 14:57:32 -0400
Hi Andy-


On Tue, 2006-10-03 at 14:38 -0400, zoboherald@aol.com wrote:
> -----Original Message-----
> >...A friend indicated that I had boiling brake fluid....
> >
> ==AM==
> Possible, but I'd think that it was effect rather than cause. More 
> likely, something else causes one or more brakes to drag, which heats 
> the fluid, which...
> 
> When everything cools off, do all four wheels spin freely without any 
> brake drag? How about first stop and subsequent going again? Does the 
> car continue to roll ok, or do brakes drag then?
> ==AM==
When I started it up hours later, there was resistance to movement,
until it 'popped', and the wheels turned freely.  Like the time I had to
"un-stick" my clutch, only it was the brakes this time.  I imagined that
they're 'stuck' on with the heat, and only became free when they'd
cooled and then been forced by moving the wheels.

I don't know about starting after the first stop - and I won't be able
to check, as it's at home in it's new garage.  I'll hopefully get to it
in a few weeks.

Are you suggesting that a too-tight brake cylinder or caliper, is the
cause of the heating brake fliud?  Makes sense.  I guess if the wheel
turns freely when it's cool, then it shouldn't generate any friction
heat in the braking system, vis-a-vis, if one of them is contacting the
brake pad or shoe when it's cool, it will heat up at speed.

> What's the problem with the PDWA?
> 

Ah, I edited out the original statement, but not the reference to it.
My PWDA has never been happy in it's 'centralized' state - if it's
plugged in, the dash light is on.  I had tried to centralize it ages
ago, but, at the time, every time I did, it would pop back, despite my
having bled the brake lines and verified that all appeared good and
solid.  Of course, this was all ages ago, when I first owned the car,
and I haven't fiddled with it in a while, and certainly not since I
replaced most of the brake lines a few years ago.  I guess I should have
another go, now that I'll be attending to the brakes some.

Thanks for your input.

;-David


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