<html>
  <head>
    <meta content="text/html; charset=ISO-8859-1"
      http-equiv="Content-Type">
  </head>
  <body text="#000000" bgcolor="#FFFFFF">
    An interesting engine - I'm still not sure how the cylinder seals
    against the pistons for compression.<br>
    <br>
    Just a note on Techlunch list mail message size <br>
    I have increased it from 25kB to 50 kB<br>
    To keep the spam at bay we have a small text size on the list.<br>
    Watch out for graphic footers on messages as then the mail gets held
    for moderator approval.<br>
    I have removed the graphic from the bottom of this email reply so it
    should get to the list recipients without the need for me to approve
    it. <br>
    <br>
    Cheers<br>
    Neil VK1NP<br>
    <br>
    <div class="moz-cite-prefix">On 16/03/2014 6:01 AM,
      <a class="moz-txt-link-abbreviated" href="mailto:techlunch@happy.emu.id.au">techlunch@happy.emu.id.au</a> wrote:<br>
    </div>
    <blockquote cite="mid:FDF4A0D0BF0C489DAA55C8B9D8556484@AdminPC"
      type="cite">
      <meta content="text/html; charset=ISO-8859-1"
        http-equiv="Content-Type">
      <meta name="GENERATOR" content="MSHTML 9.00.8112.16540">
      <!--[if !mso]>
<STYLE>v\:* {
        BEHAVIOR: url(#default#VML)
}
o\:* {
        BEHAVIOR: url(#default#VML)
}
w\:* {
        BEHAVIOR: url(#default#VML)
}
.shape {
        BEHAVIOR: url(#default#VML)
}
</STYLE>
<![endif]-->
      <style><!--
/* Font Definitions */
@font-face
        {font-family:"Cambria Math";
        panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
        {font-family:Calibri;
        panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
        {mso-margin-top-alt:auto;
        margin-right:0cm;
        mso-margin-bottom-alt:auto;
        margin-left:0cm;
        font-size:12.0pt;
        font-family:"Times New Roman","serif";
        mso-believe-normal-left:yes;}
a:link, span.MsoHyperlink
        {mso-style-priority:99;
        color:blue;
        text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
        {mso-style-priority:99;
        color:blue;
        text-decoration:underline;}
p.ecxmsonormal, li.ecxmsonormal, div.ecxmsonormal
        {mso-style-name:ecxmsonormal;
        mso-margin-top-alt:auto;
        margin-right:0cm;
        mso-margin-bottom-alt:auto;
        margin-left:0cm;
        font-size:12.0pt;
        font-family:"Times New Roman","serif";}
span.EmailStyle18
        {mso-style-type:personal;
        font-family:"Arial","sans-serif";
        color:navy;}
span.EmailStyle19
        {mso-style-type:personal;
        font-family:"Calibri","sans-serif";
        color:#1F497D;}
span.EmailStyle20
        {mso-style-type:personal;
        font-family:"Calibri","sans-serif";
        color:#1F497D;}
span.EmailStyle21
        {mso-style-type:personal-reply;
        font-family:"Calibri","sans-serif";
        color:#1F497D;}
.MsoChpDefault
        {mso-style-type:export-only;
        font-size:10.0pt;}
@page WordSection1
        {size:595.3pt 841.9pt;
        margin:72.0pt 90.0pt 72.0pt 90.0pt;}
div.WordSection1
        {page:WordSection1;}
--></style>
      <!--[if mso 9]-->
      <style>p.MsoNormal
        {margin-left:7.5pt;}
</style><!--[endif]--><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
      <div><font face="Arial" size="2">Hello all. This may well be a new
          concept for an internal combustion engine, but while I was an
          apprentice, (early 50's), DC6B superchargers work this way; I
          used to watch the aircraft mechanics overhauling them. They
          probably suited radial engines more than in-line.</font></div>
      <div><font face="Arial" size="2">Not necessarily new in the
          mechanical sense.</font></div>
      <div><font face="Arial" size="2">Cheers all John.</font></div>
      <blockquote style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT:
        5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
        <div style="FONT: 10pt arial">----- Original Message ----- </div>
        <div style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color:
          black"><b>From:</b> <a moz-do-not-send="true"
            title="techlunch@happy.emu.id.au"
            href="mailto:techlunch@happy.emu.id.au">techlunch@happy.emu.id.au</a>
        </div>
        <div style="FONT: 10pt arial"><b>To:</b> <a
            moz-do-not-send="true" title="techlunch@happy.emu.id.au"
            href="mailto:techlunch@happy.emu.id.au">techlunch@happy.emu.id.au</a>
        </div>
        <div style="FONT: 10pt arial"><b>Sent:</b> Saturday, March 15,
          2014 12:38 PM</div>
        <div style="FONT: 10pt arial"><b>Subject:</b> RE: [Techlunch]
          FW: The Duke Engine</div>
        <div><br>
        </div>
        <div class="WordSection1">
          <p class="MsoNormal"><span style="FONT-FAMILY:
              'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt;
              mso-fareast-language: EN-US">Interesting concept &#8211; I can
              already see a whole host of new &#8220;issues&#8221; this engine
              configuration introduces.<o:p></o:p></span></p>
          <p class="MsoNormal"><span style="FONT-FAMILY:
              'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt;
              mso-fareast-language: EN-US">High centrifugal forces on
              the pistons as they rotate around the engine will quickly
              cause the cylinder to wear in an oval shape (outer
              cylinder wall takes all the force)<o:p></o:p></span></p>
          <p class="MsoNormal"><span style="FONT-FAMILY:
              'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt;
              mso-fareast-language: EN-US">With the pistons, crank and
              conrods all rotating there is a significant amount of &#8220;fly
              wheel mass&#8221;. <o:p></o:p></span></p>
          <p class="MsoNormal"><span style="FONT-FAMILY:
              'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt;
              mso-fareast-language: EN-US">All the rotating engine
              components must be very accurately balanced or you can
              introduce some nasty vibrations and potentially nasty
              harmonics<o:p></o:p></span></p>
          <p class="MsoNormal"><span style="FONT-FAMILY:
              'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt;
              mso-fareast-language: EN-US">Removal of the cam means all
              the port timing is done via ports &#8211; like 2 strokes. <o:p></o:p></span></p>
          <p class="MsoNormal"><span style="FONT-FAMILY:
              'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt;
              mso-fareast-language: EN-US">Just like two strokes, engine
              performance characteristics will be greatly affected by
              inlet and exhaust &#8220;tunning&#8221;<o:p></o:p></span></p>
          <p class="MsoNormal"><span style="FONT-FAMILY:
              'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt;
              mso-fareast-language: EN-US"><o:p>&nbsp;</o:p></span></p>
          <p class="MsoNormal"><span style="FONT-FAMILY:
              'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt;
              mso-fareast-language: EN-US">There is a bunch of other
              things that I need to think a bit more about&#8230; such as the
              efficiency of the crank to drive coupling.<o:p></o:p></span></p>
          <p class="MsoNormal"><span style="FONT-FAMILY:
              'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt;
              mso-fareast-language: EN-US">Thanks for the brain food.<o:p></o:p></span></p>
          <p class="MsoNormal"><span style="FONT-FAMILY:
              'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt;
              mso-fareast-language: EN-US"><o:p>&nbsp;</o:p></span></p>
          <p class="MsoNormal"><span style="FONT-FAMILY:
              'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt;
              mso-fareast-language: EN-US">Wally<o:p></o:p></span></p>
          <p class="MsoNormal"><span style="FONT-FAMILY:
              'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt;
              mso-fareast-language: EN-US"><o:p>&nbsp;</o:p></span></p>
          <div>
            <div style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium
              none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm;
              PADDING-RIGHT: 0cm; BORDER-TOP: #e1e1e1 1pt solid;
              BORDER-RIGHT: medium none; PADDING-TOP: 3pt">
              <p style="MARGIN: 0cm 0cm 0pt" class="MsoNormal"><b><span
                    style="FONT-FAMILY: 'Calibri','sans-serif';
                    FONT-SIZE: 11pt" lang="EN-US">From:</span></b><span
                  style="FONT-FAMILY: 'Calibri','sans-serif'; FONT-SIZE:
                  11pt" lang="EN-US"> <a class="moz-txt-link-abbreviated" href="mailto:techlunch-bounces@happy.emu.id.au">techlunch-bounces@happy.emu.id.au</a>
                  [<a class="moz-txt-link-freetext" href="mailto:techlunch-bounces@happy.emu.id.au">mailto:techlunch-bounces@happy.emu.id.au</a>] <b>On
                    Behalf Of </b><a class="moz-txt-link-abbreviated" href="mailto:techlunch@happy.emu.id.au">techlunch@happy.emu.id.au</a><br>
                  <b>Sent:</b> Friday, 14 March 2014 6:51 AM<br>
                  <b>To:</b> <a class="moz-txt-link-abbreviated" href="mailto:techlunch@happy.emu.id.au">techlunch@happy.emu.id.au</a><br>
                  <b>Subject:</b> [Norton AntiSpam][Techlunch] FW: The
                  Duke Engine<o:p></o:p></span></p>
            </div>
          </div>
          <p class="MsoNormal"><o:p>&nbsp;</o:p></p>
          <p class="MsoNormal"><span style="FONT-FAMILY:
              'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 14pt;
              mso-fareast-language: EN-US">I had not heard of this
              before ..<o:p></o:p></span></p>
          <p class="MsoNormal"><span style="FONT-FAMILY:
              'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 14pt;
              mso-fareast-language: EN-US"><o:p>&nbsp;</o:p></span></p>
          <p class="MsoNormal"><span style="FONT-FAMILY:
              'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 14pt;
              mso-fareast-language: EN-US">GH<o:p></o:p></span></p>
        </div>
      </blockquote>
    </blockquote>
    <b><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: #1f497d;
        FONT-SIZE: 10pt">A</span></b><b><span style="FONT-FAMILY:
        'Arial','sans-serif'; COLOR: black; FONT-SIZE: 10pt"> more
        efficient internal combustion engine<br>
        <br>
      </span></b>This thing is fascinating to watch in action.<br>
    <a moz-do-not-send="true"
title="http://pixelbark.com/13045/how-the-duke-engines-increases-the-efficiency-of-the-internal-combustion-engine"
href="http://pixelbark.com/13045/how-the-duke-engines-increases-the-efficiency-of-the-internal-combustion-engine"
      target="_blank"><span style="COLOR: #2862c5">http://pixelbark.com/13045/how-the-duke-engines-increases-the-efficiency-of-the-internal-combustion-engine</span></a><br>
    <br>
  </body>
</html>