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Re: [Roadsters] Dragging Brakes...

To: "Rallye Enterprises, Ltd." <rallye@datsunroadster.com>
Subject: Re: [Roadsters] Dragging Brakes...
From: RWM via Datsun-roadsters <datsun-roadsters@autox.team.net>
Date: Mon, 21 Nov 2016 15:22:45 -0500
Cc: "datsun-roadsters@autox.team.net" <datsun-roadsters@autox.team.net>
Delivered-to: mharc@autox.team.net
Delivered-to: datsun-roadsters@autox.team.net
Organization: R.W. Mann & Company, Inc. || Airline Industry Analysis and Consulting
References: <4cdff281460a5c586e4741a59617628a@datsunroadster.com>
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Thanks, Dann.

In this case, I am re-using my nearly new Porterfield R4S compound rear 
shoes, and the parking brake adjustment is, as it was, nominal.

Thanks for the image. I did manage to get the gaps staggered as they 
were prior to replacing the wheel cylinders, which also answers Morey 
Mast's question.

Must be the adjusters, not giving them enough slack.

Will advise.

Thanks again, everyone.

- Bob Mann


On 11/21/2016 3:08 PM, Rallye Enterprises, Ltd. wrote:
>
> When reading Steve Ehler's good comments on dragging brakes it 
> reminded me of a few dozen phone
> calls I've received over the decades and I don't know if this is your 
> case but I thought I'd throw it out there.
>
> When new shoes are put on a car it is necessary to readjust the 
> parking brake cable linkage. If the linkage
> had been adjusted to deal with worn brake shoes and you put on new 
> shoes it can many times cause the
> drag you speak of since the previously needed linkage shortening is no 
> longer necessary.
>
> It's a simple matter of loosening the cable adjuster so it has just a 
> titch of slack in it.
>
> The other fellows comments are common too; that the shoes have to be 
> put on "staggered"; with the gap
> on the end of one shoe be on the "opposite" side of the circle than 
> the other shoe's gap.
>
> Usually  unless the drums are cut a lot it is hard to even get the 
> drum over the shoes if both gaps (the area
> of the shoe where there is no lining) are put close to each other.
>
> I attached a picture of the shoe gaps staggered as they should be; I'm 
> not sure I'm explaining this very well.
>
> Dann at Rallye

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    <p>Thanks, Dann. <br>
    </p>
    <p>In this case, I am re-using my nearly new Porterfield R4S
      compound rear shoes, and the parking brake adjustment is, as it
      was, nominal.</p>
    <p> Thanks for the image. I did manage to get the gaps staggered as
      they were prior to replacing the wheel cylinders, which also
      answers Morey Mast's question.</p>
    <p>Must be the adjusters, not giving them enough slack.</p>
    <p>Will advise.</p>
    <p>Thanks again, everyone.</p>
    <p>- Bob Mann<br>
    </p>
    <br>
    <div class="moz-cite-prefix">On 11/21/2016 3:08 PM, Rallye
      Enterprises, Ltd. wrote:<br>
    </div>
    <blockquote
      cite="mid:4cdff281460a5c586e4741a59617628a@datsunroadster.com"
      type="cite">
      <br>
      When reading Steve Ehler's good comments on dragging brakes it
      reminded me of a few dozen phone
      <br>
      calls I've received over the decades and I don't know if this is
      your case but I thought I'd throw it out there.
      <br>
      <br>
      When new shoes are put on a car it is necessary to readjust the
      parking brake cable linkage. If the linkage
      <br>
      had been adjusted to deal with worn brake shoes and you put on new
      shoes it can many times cause the
      <br>
      drag you speak of since the previously needed linkage shortening
      is no longer necessary.
      <br>
      <br>
      It's a simple matter of loosening the cable adjuster so it has
      just a titch of slack in it.
      <br>
      <br>
      The other fellows comments are common too; that the shoes have to
      be put on "staggered"; with the gap
      <br>
      on the end of one shoe be on the "opposite" side of the circle
      than the other shoe's gap.
      <br>
      <br>
      Usually  unless the drums are cut a lot it is hard to even get the
      drum over the shoes if both gaps (the area
      <br>
      of the shoe where there is no lining) are put close to each other.
      <br>
      <br>
      I attached a picture of the shoe gaps staggered as they should be;
      I'm not sure I'm explaining this very well.
      <br>
      <br>
      Dann at Rallye <br>
    </blockquote>
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