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Re: [Healeys] speedo stuck at 78 MPH

To: healeys@autox.team.net
Subject: Re: [Healeys] speedo stuck at 78 MPH
From: Bob Spidell <bspidell@comcast.net>
Date: Sat, 12 Jun 2021 22:59:11 -0700
Delivered-to: mharc@autox.team.net
Delivered-to: healeys@autox.team.net
References: <CABXhz880GCydqgmefDbidtw__rUzPemTNFTvOjFSbQmxvvTAYA@mail.gmail.com> <CALPtYiNq-SVv_6=fTqGdnq_GCs6E0Txg7dPRGEiVfTsFMvNLAA@mail.gmail.com>
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re: "As the needle is stuck, it sounds like the movement/bearing is sticky."

Yep. Hence the 'tap the face of the gauge trick' (for dramatic effect, 
if nothing else).

Side note: I've taken several speedos apart and actually got one or two 
back together. I expected to see an alleged 'jeweled bearing,' but as 
far as I could tell it was brass-on-brass (the brass needle spindle 
against a brass pocket). No Swiss watch stuff.

Bob

On 6/12/2021 8:49 PM, Roger Grace via Healeys wrote:
> As the needle is stuck, it sounds like the movement/bearing is sticky. 
> The hair spring should return it if OK.
> If you do decide to replace it, maybe consider a digital replacement 
> that you can get built with the exact face as your current one - it 
> can be tuned to be dead accurate - independent of diff or tires. The 
> only issue is that there is a small lcd trip recorder. I have one on 
> my BJ8 and nobody notices the lcd as the speedo face is the same as 
> original and as the tacho, About 180 gbp from Speedy Cables in Wales. 
> You would need to sort out a source of pulses to drive it. Absolutely 
> no needle jiggering either - it is just like a modern car speedo.
> If of interest, I could send you a photo.
> rg
>
> On Fri, Jun 11, 2021 at 3:06 PM i erbs via Healeys 
>
>     Any ideas on why my speedo is stuck at 78 MPH? my cable spins
>     freely when I remove it from the back of the speedo, but does
>     not spin while moving. I have not yet jacked it up to see if my
>     angle drive is shit or not. I need to replace it anyway as my
>     speedo is off with new tires. It said 78 , but I was really doing
>     65., Honest officer
>     Ira Erbs
>     Milwaukie,OR
>         _______  _______
>        (______ \____1959 BN4____/ _______)
>     (_________________________)
>               BT7 engine and disk brakes
>
>
>     1967 MGB MG
>
>     A racing car is an animal with a thousand adjustments. Mario Andretti
>     Please excuse random auto corrects and misspelled words
>


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    re: "As the needle is stuck, it sounds like the movement/bearing is
    sticky."<br>
    <br>
    Yep. Hence the 'tap the face of the gauge trick' (for dramatic
    effect, if nothing else).<br>
    <br>
    Side note: I've taken several speedos apart and actually got one or
    two back together. I expected to see an alleged 'jeweled bearing,'
    but as far as I could tell it was brass-on-brass (the brass needle
    spindle against a brass pocket). No Swiss watch stuff.<br>
    <br>
    Bob<br>
    <br>
    <div class="moz-cite-prefix">On 6/12/2021 8:49 PM, Roger Grace via
      Healeys wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CALPtYiNq-SVv_6=fTqGdnq_GCs6E0Txg7dPRGEiVfTsFMvNLAA@mail.gmail.com">
      <meta http-equiv="content-type" content="text/html; charset=UTF-8">
      <div dir="ltr">
        <div>As the needle is stuck, it sounds like the movement/bearing
          is sticky. The hair spring should return it if OK.</div>
        <div>If you do decide to replace it, maybe consider a digital
          replacement that you can get built with the exact face as your
          current one - it can be tuned to be dead accurate -
          independent of diff or tires. The only issue is that there is
          a small lcd trip recorder. I have one on my BJ8 and nobody
          notices the lcd as the speedo face is the same as original and
          as the tacho, About 180 gbp from Speedy Cables in Wales. You
          would need to sort out a source of pulses to drive it.
          Absolutely no needle jiggering either - it is just like a
          modern car speedo.</div>
        <div>If of interest, I could send you a photo.</div>
        <div>rg</div>
      </div>
      <br>
      <div class="gmail_quote">
        <div dir="ltr" class="gmail_attr">On Fri, Jun 11, 2021 at 3:06
          PM i erbs via Healeys &lt;<a
            href="mailto:healeys@autox.team.net"; 
moz-do-not-send="true">healeys@autox.team.net</a>&gt;
          wrote:<br>
        </div>
        <blockquote class="gmail_quote" style="margin:0px 0px 0px
          0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
          <div dir="ltr">Any ideas on why my speedo is stuck at 78 MPH?
            my cable spins freely when I remove it from the back of the
            speedo, but does not spin while moving. I have not yet
            jacked it up to see if my angle drive is shit or not. I need
            to replace it anyway as my speedo is off with new tires. It
            said 78 , but I was really doing 65., Honest officer<br
              clear="all">
            <div>
              <div dir="ltr">
                <div dir="ltr">
                  <div>
                    <div dir="ltr">
                      <div>
                        <div dir="ltr">
                          <div>
                            <div dir="ltr">
                              <div>
                                <div dir="ltr">
                                  <div>
                                    <div dir="ltr">
                                      <div>
                                        <div dir="ltr">
                                          <div dir="ltr">Ira Erbs
                                            <div>Milwaukie,OR</div>
                                            <div><span
                                                style="font-family:&quot;Times
                                                New Roman&quot;,serif"> 
                                                    _______            
                                                                   
                                                 _______</span><br
                                                style="font-family:&quot;Times
                                                New Roman&quot;,serif">
                                              <span
                                                style="font-family:&quot;Times
                                                New Roman&quot;,serif"> 
                                                   (______ \____1959
                                                BN4____/ _______)</span><br
style="font-family:&quot;Times New Roman&quot;,serif">
                                              <span
                                                style="font-family:&quot;Times
                                                New Roman&quot;,serif"> 
                                                      
                                                
(_________________________)</span></div>
                                            <div>          BT7 engine
                                              and disk brakes</div>
                                            <div><br>
                                            </div>
                                            <div><br>
                                            </div>
                                            <div>1967 MGB  <img
                                                
src="http://www.britishcarspecialists.com/assets/images/MG_emblem.jpg";
                                                alt="MG"
                                                moz-do-not-send="true"></div>
                                            <div><br>
                                            </div>
                                            <div><span
                                                
style="color:rgb(51,51,51);font-family:&quot;Helvetica
Neue&quot;,Helvetica,Arial,sans-serif;font-size:14px">A racing car is an
                                                animal with a thousand
                                                adjustments. Mario
                                                Andretti</span><br>
                                            </div>
                                            <div>Please excuse random
                                              auto corrects and
                                              misspelled words</div>
                                          </div>
                                        </div>
                                      </div>
                                    </div>
                                  </div>
                                </div>
                              </div>
                            </div>
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