<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  </head>
  <body>
    <p>With the dye penetrant, you clean the part, spray on the dye and
      let it soak in to the crack, clean off the surface, spray the
      developer which will soak up some of the penetrant from the
      crack.  Some kits require the use of a black light to see the
      crack. <br>
    </p>
    <p>Magnuflux works on parts that are magnetic and I believe that it
      can find smaller cracks than the dye penetrant method.  But it's
      been years - fatigue testing diesel engine crankshafts.<br>
    </p>
    <p><br>
    </p>
    <div class="moz-cite-prefix">On 1/19/23 12:28, Bob Spidell wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:a1f5709e-76a6-c8eb-92b3-a5134f48c14f@comcast.net">
      <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
      I thought there might be a difference, but I learn when I say
      something misinformed and get corrected (happens a lot; hence my
      initials ;). Presumably, the dye penetrant method doesn't involve
      electric fields?<br>
      <br>
      bs<br>
      <br>
      <br>
      <div class="moz-cite-prefix">On 1/19/2023 7:43 AM, Michael Salter
        wrote:<br>
      </div>
      <blockquote type="cite"
cite="mid:CAB3i7LKh2X_B9TrDxTLnoFiXUhRED4u1tHN2RscpkB582O_YYA@mail.gmail.com">
        <meta http-equiv="content-type" content="text/html;
          charset=UTF-8">
        <div dir="ltr">
          <div class="gmail_default"
            style="font-family:arial,sans-serif;font-size:small">Hi
            thanks for your comment. If possible I would really
            appreciate it if you would add it to the comments  on my
            blog post.</div>
          <div class="gmail_default"
            style="font-family:arial,sans-serif;font-size:small"><a
href="https://precisionsportscar.com/austin-healey-front-wheel-bearing-spacers/"
              moz-do-not-send="true" class="moz-txt-link-freetext">https://precisionsportscar.com/austin-healey-front-wheel-bearing-spacers/</a></div>
          <div class="gmail_default"
            style="font-family:arial,sans-serif;font-size:small">Interestingly
            my understanding of "Magnaflux" testing is entirely
            different. The "magnaflux" system we used in the aircraft
            industry subjected the ferrous part to a magnetic field and
            immersed it into a bath of spray containing iron particles.
            The particles would gather at the edges of any cracks. <br>
          </div>
          <div class="gmail_default"
            style="font-family:arial,sans-serif;font-size:small">I was
            involved with a comparison test of "Magnaflux" vs penetrant
            dye testing on Rolls Royce Dart engine parts and the general
            conclusion was that the results achieved using
            "Magnaflux"were very much more dependent on operator skill
            than penetrant dye although the penetrant system took a lot
            longer.</div>
          <div class="gmail_default"
            style="font-family:arial,sans-serif;font-size:small"><br>
          </div>
          <div class="gmail_default"
            style="font-family:arial,sans-serif;font-size:small">M<br>
          </div>
          <div class="gmail_default"
            style="font-family:arial,sans-serif;font-size:small"><br>
          </div>
        </div>
        <br>
        <div class="gmail_quote">
          <div dir="ltr" class="gmail_attr">On Wed, Jan 18, 2023 at 3:55
            PM Bob Spidell <<a href="mailto:bspidell@comcast.net"
              moz-do-not-send="true" class="moz-txt-link-freetext">bspidell@comcast.net</a>>
            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> Another good post, Michael. A couple things:<br>
              <br>
              - To the best of my recollection--I haven't gotten in
              there in a while--my BN2 has the spacers. I think it was
              one of the later cars so maybe they were added at the end
              of the run? Nothing else about the car makes me think any
              of the previous owners were particularly diligent or
              careful with the car (though it was in relatively good
              shape when we bought it).<br>
              <br>
              - If you don't have facilities for using a penetrant
              dye--what us Yankees call 'magnaflux'--the 'ring test' can
              sometimes suffice. Suspend the stub axle, preferably with
              wire, and give it a sharp rap with a hammer, wrench, etc.
              The axle should ring, like a tuning fork, but if you get a
              dull thud you likely have a crack in the axle. My dad took
              our stub axles up to BCS to have new bushings installed
              and reamed, and Dad said Norman Nock was impressed by
              Dad's knowledge of the ring test (Dad was an Old School
              mechanic himself).<br>
              <br>
              - I always assumed if a part wasn't absolutely necessary
              the BMC bean counters would have it removed; maybe they
              realized keeping the spacer, for the BN4s and later cars
              was cheaper than replacing broken stub axles?<br>
              <br>
              Bob<br>
              <br>
              <br>
              <div>On 1/18/2023 8:00 AM, Michael Salter wrote:<br>
              </div>
              <blockquote type="cite">
                <div dir="ltr">
                  <div class="gmail_default"
                    style="font-family:arial,sans-serif;font-size:small"><a
href="https://precisionsportscar.com/austin-healey-front-wheel-bearing-spacers/"
                      target="_blank" moz-do-not-send="true"
                      class="moz-txt-link-freetext">https://precisionsportscar.com/austin-healey-front-wheel-bearing-spacers/</a></div>
                </div>
                <br>
                <fieldset></fieldset>
                <pre>_______________________________________________

</pre>
              </blockquote>
              <br>
            </div>
            _______________________________________________<br>
            Support Team.Net <a href="http://www.team.net/donate.html"
              rel="noreferrer" target="_blank" moz-do-not-send="true"
              class="moz-txt-link-freetext">http://www.team.net/donate.html</a><br>
            Suggested annual donation  $12.75<br>
            <br>
            Archive: <a href="http://www.team.net/pipermail/healeys"
              rel="noreferrer" target="_blank" moz-do-not-send="true"
              class="moz-txt-link-freetext">http://www.team.net/pipermail/healeys</a>
            <a href="http://autox.team.net/archive/healeys"
              rel="noreferrer" target="_blank" moz-do-not-send="true"
              class="moz-txt-link-freetext">http://autox.team.net/archive/healeys</a><br>
            <br>
            <a href="mailto:Healeys@autox.team.net" target="_blank"
              moz-do-not-send="true" class="moz-txt-link-freetext">Healeys@autox.team.net</a><br>
            <a href="http://autox.team.net/mailman/listinfo/healeys"
              rel="noreferrer" target="_blank" moz-do-not-send="true"
              class="moz-txt-link-freetext">http://autox.team.net/mailman/listinfo/healeys</a><br>
            <br>
            Unsubscribe/Manage: <a
href="http://autox.team.net/mailman/options/healeys/michaelsalter@gmail.com"
              rel="noreferrer" target="_blank" moz-do-not-send="true"
              class="moz-txt-link-freetext">http://autox.team.net/mailman/options/healeys/michaelsalter@gmail.com</a><br>
            <br>
          </blockquote>
        </div>
      </blockquote>
      <br>
      <br>
      <fieldset class="moz-mime-attachment-header"></fieldset>
      <pre class="moz-quote-pre" wrap="">_______________________________________________
Support Team.Net <a class="moz-txt-link-freetext" href="http://www.team.net/donate.html">http://www.team.net/donate.html</a>
Suggested annual donation  $12.75

Archive: <a class="moz-txt-link-freetext" href="http://www.team.net/pipermail/healeys">http://www.team.net/pipermail/healeys</a> <a class="moz-txt-link-freetext" href="http://autox.team.net/archive/healeys">http://autox.team.net/archive/healeys</a>

<a class="moz-txt-link-abbreviated" href="mailto:Healeys@autox.team.net">Healeys@autox.team.net</a>
<a class="moz-txt-link-freetext" href="http://autox.team.net/mailman/listinfo/healeys">http://autox.team.net/mailman/listinfo/healeys</a>

Unsubscribe/Manage: <a class="moz-txt-link-freetext" href="http://autox.team.net/mailman/options/healeys/rchaskell@earthlink.net">http://autox.team.net/mailman/options/healeys/rchaskell@earthlink.net</a>

</pre>
    </blockquote>
    <pre class="moz-signature" cols="72">-- 
Bob Haskell
Austin-Healey 3000 roadster registrar</pre>
  </body>
</html>