Subject: Re: [Mgs] MGA 1500 Front Brakes

From: "PaulHunt73" <[email-masked]>
Date: Mon, 26 Oct 2020 08:55:32 -0000 D52hxz1bN1No08/+oYMIdA3rXMN6dFRIK7u4J/EqBXTbu8eQ6E8P9oWKs25n7vv3gnwUSJcoAfSa/mqj0d3JfZcW9gbfUtiz5eE=

On a single-circuit system air will affect all brakes equally.

Ideally pistons both will move out together when neither are clamped off. 
In practice one will always move before the other, but it's a question of 
how much extra pressure is needed to move the 'lazy' one.

Could be a hose breaking down internally and acting as a restrictor.

----- Original Message ----- 
... Clamped both wheel cylinders to ck movement of each. Both are moving. 
The front brakes were fully redone everything mid last summer. Put all back 
together, same result. Iv’e ordered new cylinders and will replace when 
arrive. Any other ideas???
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From: Robert's New iPad <[email-masked]>
Date: Mon, 26 Oct 2020 07:10:59 -0400

Try driving the car 1/2 mile or so, then stop and feel the wheels & brakes.  A dragging brake will warm the wheel.
   A friend had a Mercedes that acted similarly.  Problem was a brake hose gone bad internally.  A bit of the inner lining peeled, would allow the brake to operate but then would act as a check valve and not release the fluid pressure.  The drag would warm the brake drums & cylinders, expand the fluid, and the wheel would really stick.
Bob

> On Oct 25, 2020, at 8:40 PM, Osborne, Paul <[email-masked]> wrote:
> 
> Some times you just get stumped! This is one of these times.  My 1500 MGA is pulling to the rt like the left fronts are not even working, sort of. 
> Run down the road and not even step on the peddle hard and the car goes right rather hard.  Here is what I’ve done. First, made sure the adjusters are one click back from full on. Ck. Still same result.  Took off the drum cleaned with brake cleaner, even though all looked good, same result. Bleed the front brakes a good amount, same result. Clamped both wheel cylinders to ck movement of each. Both are moving. The front brakes were fully redone everything mid last summer. Put all back together, same result. Iv’e ordered new cylinders and will replace when arrive. Any other ideas??? 
> 
> Thanks 
> 
> paul
> 
> 
> 
> Paul Osborne
> Paul's Canvas
> 7379 E Main St 
> Lima NY 14485
> 585-255-0531
> 
> 
> 
> Unsubscribe: http://autox.team.net/mailman/options/mgs/[email-masked]

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From: <[email-masked]>
Date: Mon, 26 Oct 2020 12:13:04 +0100

Take the drums of the front brakes off and verify for any leaky save cylinders. 
If a cylinder has leaked, the brake shoes are contaminated with brake fluid, causing bad brake operation.

So ordering brake cylinders is a good idea, but replacing any brake shoes which have been in contact with brake fluid also is important. 

Hope this helps.

Cheers,
Hans 71 BGT

-----Oorspronkelijk bericht-----
Van: Mgs <[email-masked]> Namens Osborne, Paul
Verzonden: maandag 26 oktober 2020 01:41
Aan: Mglist <[email-masked]>
Onderwerp: [Mgs] MGA 1500 Front Brakes

Thanks 

paul

Paul Osborne
Paul's Canvas
7379 E Main St 
Lima NY 14485
585-255-0531

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From: Max Heim <[email-masked]>
Date: Mon, 26 Oct 2020 10:29:20 -0700

It would certainly seem to be brake related, but here is a more far-fetched suggestion: a broken rear spring. This will cause asymmetric wheel loading, which can make the car pull hard to one side. You would probably notice asymmetric cornering response as well, though. Curiously, it doesn’t seem to affect the ride much.
 
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> On Oct 25, 2020, at 5:40 PM, Osborne, Paul <[email-masked]> wrote:
> 
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From: "PaulHunt73" <[email-masked]>
Date: Tue, 27 Oct 2020 08:20:18 -0000 A3on0BRX56gfIwkIzZvtVJxK5DL+XFNxpfoRHFDsLcEhPpistCTAJGjl

For me and a pal a broken MGB rear spring caused the axle to move back an 
inch or more on that side and the result was the steering wheel turned to 
one side when travelling in a straight line.

----- Original Message ----- 

> It would certainly seem to be brake related, but here is a more 
> far-fetched suggestion: a broken rear spring. 

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From: "Osborne, Paul" <[email-masked]>
Date: Tue, 27 Oct 2020 10:56:44 +0000

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Thanks for the response from the collective, here is what I found. No, I do=
 not have a broken rear spring, though I did not think about that.
The rear cylinder in the left front wheel, as there are two cylinders in ea=
ch front wheel, had limited travel due to a corrosion spot on the bore, not=
 allowing the piston to fully travel down the bore. Giving only 1/2 of the =
brake action in that wheel, causing the car to pull right. Have ordered 2 n=
ew cylinders and a set of shoes and will do this in the spring when I get t=
he car out.  Again, thank you for the input.

paul

Paul Osborne
Department of Electrical and Computer Eng
University of Rochester
201 Hopeman Building RC
Rochester NY 14627
   585-275-5226

[email-masked]>> wrote:

For me and a pal a broken MGB rear spring caused the axle to move back an i=
nch or more on that side and the result was the steering wheel turned to on=
e side when travelling in a straight line.

----- Original Message -----
It would certainly seem to be brake related, but here is a more far-fetched=
 suggestion: a broken rear spring.

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e-break: after-white-space;" class=3D"">
Thanks for the response from the collective, here is what I found. No, I do=
 not have a broken rear spring, though I did not think about that.&nbsp;
<div class=3D"">The rear cylinder in the left front wheel, as there are two=
 cylinders in each front wheel, had limited travel due to a corrosion spot =
on the bore, not allowing the piston to fully travel down the bore. Giving =
only 1/2 of the brake action in that
 wheel, causing the car to pull right. Have ordered 2 new cylinders and a s=
et of shoes and will do this in the spring when I get the car out. &nbsp;Ag=
ain, thank you for the input.&nbsp;</div>
<div class=3D""><br class=3D"">
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<div class=3D"">paul</div>
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<p class=3D"MsoNormal" style=3D"margin: 0in 0in 12pt; font-size: 12pt;">Pau=
l Osborne<br class=3D"">
Department of Electrical and Computer Eng<br class=3D"">
University of Rochester&nbsp;<br class=3D"">
201 Hopeman Building RC<br class=3D"">
Rochester NY 14627<br class=3D"">
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<div class=3D"" style=3D"orphans: 2; widows: 2;"><span class=3D"Apple-style=
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<div class=3D"">On Oct 27, 2020, at 4:20 AM, PaulHunt73 &lt;<a href=3D"mail=
to:[email-masked]" class=3D"">[email-masked]</a>&gt=
; wrote:</div>
<br class=3D"Apple-interchange-newline">
<div class=3D"">
<div class=3D"">For me and a pal a broken MGB rear spring caused the axle t=
o move back an inch or more on that side and the result was the steering wh=
eel turned to one side when travelling in a straight line.<br class=3D"">
<br class=3D"">
<br class=3D"">
----- Original Message ----- <br class=3D"">
<blockquote type=3D"cite" class=3D"">It would certainly seem to be brake re=
lated, but here is a more far-fetched suggestion: a broken rear spring.
<br class=3D"">
</blockquote>
<br class=3D"">
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