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Re: [TR] distributor advance

To: triumphs@autox.team.net
Subject: Re: [TR] distributor advance
From: Paul Tegler <ptegler@verizon.net>
Date: Sun, 1 Mar 2020 20:37:30 -0500
Delivered-to: mharc@autox.team.net
Delivered-to: triumphs@autox.team.net
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you've got some other issue going on.

A stiffer spring would have not allowed the weights to swing out as far 
at lower rpms. It would NOT ADD idle advance over the original 
settings.�� If anything...your original timing setting might have been 
now retarded as the new springs would have held the weights in longer up 
the rpm band, and possible at idle� (new springs= no/less centripetal 
advance at idle).

If your timing is bouncing around or erractic...have to bothered to 
check the end float of your cam driven dist drive gear?� IIRC, something 
like 0.04" of uncontrolled float can create +/- 5 degrees of timing 
jitter.� You stack (or remove) shims under the dist pedistal to correct 
the end float.

ptegler


On 3/1/2020 2:39 PM, Peter Arakelian wrote:
>
> > Wouldn't stiffer springs give you less advance at idle and, hence, 
> more advance at speed?<
>
> That was my initial thought, too.� However, the way the system appears 
> to work is that the weights pull out no matter which spring is used.� 
> The springs determine how much of that pull is transferred to the 
> distributor�s advance.�� A stiffer spring will follow the pull of the 
> weight more closely giving you advance sooner.� This was also borne 
> out by what actually occurred. When I put the stiffer springs in the 
> idle timing advanced by 10-15 degrees.
>
> Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986> for 
> Windows 10
>
>
> ** triumphs@autox.team.net **
>
> Donate: http://www.team.net/donate.html
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>
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> http://autox.team.net/mailman/options/triumphs/ptegler@verizon.net

-- 
Paul Tegler
ptegler@verizon.net  www.teglerizer.com


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    <p>you've got some other issue going on.</p>
    <p>A stiffer spring would have not allowed the weights to swing out
      as far at lower rpms. It would NOT ADD idle advance over the
      original settings.�� If anything...your original timing setting
      might have been now retarded as the new springs would have held
      the weights in longer up the rpm band, and possible at idle� (new
      springs= no/less centripetal advance at idle).</p>
    <p>If your timing is bouncing around or erractic...have to bothered
      to check the end float of your cam driven dist drive gear?� IIRC,
      something like 0.04" of uncontrolled float can create +/- 5
      degrees of timing jitter.� You stack (or remove) shims under the
      dist pedistal to correct the end float.</p>
    <p>ptegler<br>
    </p>
    <p><br>
    </p>
    <div class="moz-cite-prefix">On 3/1/2020 2:39 PM, Peter Arakelian
      wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:DM5PR06MB35643449E1BC7372031CF5C9C1E60@DM5PR06MB3564.namprd06.prod.outlook.com">
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        <p class="MsoNormal">&gt; Wouldn't stiffer springs give you less
          advance at idle and, hence, more advance at speed?&lt;<o:p></o:p></p>
        <p class="MsoNormal"><o:p>�</o:p></p>
        <p class="MsoNormal">That was my initial thought, too.� However,
          the way the system appears to work is that the weights pull
          out no matter which spring is used.� The springs determine how
          much of that pull is transferred to the distributor�s
          advance.�� A stiffer spring will follow the pull of the weight
          more closely giving you advance sooner.� This was also borne
          out by what actually occurred. When I put the stiffer springs
          in the idle timing advanced by 10-15 degrees.<br>
          <br>
        </p>
        <p class="MsoNormal"><o:p>�</o:p></p>
        <p class="MsoNormal">Sent from <a
            href="https://go.microsoft.com/fwlink/?LinkId=550986";
            moz-do-not-send="true">
            Mail</a> for Windows 10</p>
        <p class="MsoNormal"><o:p>�</o:p></p>
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      <pre class="moz-quote-pre" wrap="">** <a class="moz-txt-link-abbreviated" 
href="mailto:triumphs@autox.team.net";>triumphs@autox.team.net</a> **

Archive: <a class="moz-txt-link-freetext" 
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</pre>
    </blockquote>
    <pre class="moz-signature" cols="72">-- 
Paul Tegler
<a class="moz-txt-link-abbreviated" 
href="mailto:ptegler@verizon.net";>ptegler@verizon.net</a>  <a 
class="moz-txt-link-abbreviated" 
href="http://www.teglerizer.com";>www.teglerizer.com</a></pre>
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