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Date: Sat, 17 Mar 2007 07:25:01 -0700 (PDT)
From: James Maher <deltaflyer@prodigy.net>
Subject: Re: [FlyRotary] Heat shield
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
In-Reply-To: <list-1926230@logan.com>
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I've been using Nashua 322 Aluminum foil tape from Home Depot
  to protect the inside of my cowl from the internal muffler.
  It is available in a role 2"x10yards for a couple of bucks.
  This is what is used for taping insulation panels together.
  Seems to work very well for radiant heat as it is very reflective and light weight.
  I know that it is working because there were a couple of places where I did not apply the tape and the radiant heat caused the paint on the outside of the cowl to bubble.
  Apparently the fiberglass was transparent to the IR but not the paint.
  Just another alternative.
  Jim

Al Gietzen <ALVentures@cox.net> wrote:
                My experience with fiberfax was not ideal.  I lined the bottom of my cowling 
  with it to protect the fiberglass from the heat of the exhaust - 
  unfortunately, it absorbs oil like a wick and I was concerned about just 
  that.  Perhaps,if you cover the fiberfax with something like SS or anything 
  to keep the oil away,  then it may be OK.   I also found it fairly fragile 
  and easy to tear.  Just my experience with it - YMMV
   
  Ed
   
  Ed;
   
  Fiberfrax is intended as a thermal insulation used between other surfaces, such as on the firewall behind a thin SS barrier.  For your cowl protection you might want to consider an aluminized reflective barrier such as: 
  http://www.jegs.com/webapp/wcs/stores/servlet/product_10001_10002_750869_-1_10633
  which will not absorb oil.  I got it at a local speed shop.
   
  Al



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<div>I've been using Nashua 322 Aluminum foil tape from Home Depot</div>  <div>to protect the inside of&nbsp;my cowl from the internal&nbsp;muffler.</div>  <div>It is available in a role 2"x10yards for a couple of bucks.</div>  <div>This is what is used for taping&nbsp;insulation panels together.</div>  <div>Seems to work very well for radiant heat as it is very reflective and light weight.</div>  <div>I know that it is working because there were a couple of places where I did not apply the tape and the radiant heat caused the paint on the outside of the cowl to bubble.</div>  <div>Apparently the fiberglass was transparent to the IR but not the paint.</div>  <div>Just another alternative.</div>  <div>Jim<BR><BR><B><I>Al Gietzen &lt;ALVentures@cox.net&gt;</I></B> wrote:</div>  <BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">  <META content="Microsoft Word 10 (filtered)" name=Generator>  <STYLE>  <!--   /* Font Definitions
 */   @font-face   {font-family:Verdana;   panose-1:2 11 6 4 3 5 4 4 2 4;}  @font-face   {font-family:Nimrod;   panose-1:2 4 5 3 5 4 1 2 2 4;}   /* Style Definitions */   p.MsoNormal, li.MsoNormal, div.MsoNormal   {margin:0in;   margin-bottom:.0001pt;   font-size:12.0pt;   font-family:"Times New Roman";}  a:link, span.MsoHyperlink   {color:blue;   text-decoration:underline;}  a:visited, span.MsoHyperlinkFollowed   {color:purple;   text-decoration:underline;}  p.MsoPlainText, li.MsoPlainText, div.MsoPlainText   {margin:0in;   margin-bottom:.0001pt;   font-size:11.0pt;   font-family:Nimrod;}  @page Section1   {size:8.5in 11.0in;   margin:1.0in 62.3pt 1.0in 62.3pt;}  div.Section1   {page:Section1;}  -->  </STYLE>    <DIV class=Section1>  <div class=MsoPlainText><FONT face=Nimrod size=2><SPAN style="FONT-SIZE: 11pt">My experience with fiberfax was not ideal.&nbsp; I lined the bottom of my cowling </SPAN></FONT></div>  <div class=MsoPlainText><FONT face=Nimrod size=2><SPAN
 style="FONT-SIZE: 11pt">with it to protect the fiberglass from the heat of the exhaust - </SPAN></FONT></div>  <div class=MsoPlainText><FONT face=Nimrod size=2><SPAN style="FONT-SIZE: 11pt">unfortunately, it absorbs oil like a wick and I was concerned about just </SPAN></FONT></div>  <div class=MsoPlainText><FONT face=Nimrod size=2><SPAN style="FONT-SIZE: 11pt">that.&nbsp; Perhaps,if you cover the fiberfax with something like SS or anything </SPAN></FONT></div>  <div class=MsoPlainText><FONT face=Nimrod size=2><SPAN style="FONT-SIZE: 11pt">to keep the oil away,&nbsp; then it may be OK.&nbsp;&nbsp; I also found it fairly fragile </SPAN></FONT></div>  <div class=MsoPlainText><FONT face=Nimrod size=2><SPAN style="FONT-SIZE: 11pt">and easy to tear.&nbsp; Just my experience with it - YMMV</SPAN></FONT></div>  <div class=MsoPlainText><FONT face=Nimrod size=2><SPAN style="FONT-SIZE: 11pt"></SPAN></FONT>&nbsp;</div>  <div class=MsoPlainText><FONT face=Nimrod size=2><SPAN
 style="FONT-SIZE: 11pt">Ed</SPAN></FONT></div>  <div class=MsoPlainText><FONT face=Nimrod color=black size=2><SPAN style="FONT-SIZE: 11pt; COLOR: black"></SPAN></FONT>&nbsp;</div>  <div class=MsoPlainText><FONT face=Verdana color=black size=2><SPAN style="FONT-SIZE: 11pt; COLOR: black; FONT-FAMILY: Verdana">Ed;</SPAN></FONT></div>  <div class=MsoPlainText><FONT face=Verdana color=black size=2><SPAN style="FONT-SIZE: 11pt; COLOR: black; FONT-FAMILY: Verdana"></SPAN></FONT>&nbsp;</div>  <div class=MsoPlainText><FONT face=Verdana color=black size=2><SPAN style="FONT-SIZE: 11pt; COLOR: black; FONT-FAMILY: Verdana">Fiberfrax is intended as a thermal insulation used between other surfaces, such as on the firewall behind a thin SS barrier.&nbsp; For your cowl protection you might want to consider an aluminized reflective barrier such as: </SPAN></FONT></div>  <div class=MsoPlainText><FONT face=Verdana color=black size=2><SPAN style="FONT-SIZE: 11pt; COLOR: black; FONT-FAMILY:
 Verdana"><A href="http://www.jegs.com/webapp/wcs/stores/servlet/product_10001_10002_750869_-1_10633">http://www.jegs.com/webapp/wcs/stores/servlet/product_10001_10002_750869_-1_10633</A></SPAN></FONT></div>  <div class=MsoPlainText><FONT face=Verdana color=black size=2><SPAN style="FONT-SIZE: 11pt; COLOR: black; FONT-FAMILY: Verdana">which will not absorb oil.&nbsp; I got it at a local speed shop.</SPAN></FONT></div>  <div class=MsoPlainText><FONT face=Verdana color=black size=2><SPAN style="FONT-SIZE: 11pt; COLOR: black; FONT-FAMILY: Verdana"></SPAN></FONT>&nbsp;</div>  <div class=MsoPlainText><FONT face=Verdana color=black size=2><SPAN style="FONT-SIZE: 11pt; COLOR: black; FONT-FAMILY: Verdana">Al</SPAN></FONT></div></DIV></BLOCKQUOTE><BR>
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