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<DIV><SPAN class=098240122-23092003><FONT face="Comic Sans MS"
color=#0000ff>Sounds like a "market opening" for you Gray. If you made it
available, I 'd buy it! I first bought one of Ed's pipes not long after he made
them available. It cost me over $500 Australian at the time. It lasted about 2-5
flights before my inlet got crushed by the teflon coupler, just behind the
aluminium insert. I need a definite fix before I touch it!!!</FONT></SPAN></DIV>
<DIV><SPAN class=098240122-23092003><FONT face="Comic Sans MS"
color=#0000ff></FONT></SPAN> </DIV>
<DIV><SPAN class=098240122-23092003><FONT face="Comic Sans MS" color=#0000ff>If
I cant fix it, it will remain as one of my not so smart modelling
choices.</FONT></SPAN></DIV>
<DIV><SPAN class=098240122-23092003><FONT face="Comic Sans MS"
color=#0000ff></FONT></SPAN> </DIV>
<DIV><SPAN class=098240122-23092003><FONT face="Comic Sans MS"
color=#0000ff>Tom</FONT></SPAN></DIV>
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<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B> Gray E Fowler
[mailto:gfowler@raytheon.com]<BR><B>Sent:</B> Wednesday, 24 September 2003
7:41 AM<BR><B>To:</B> discussion@nsrca.org<BR><B>Subject:</B> Re: ES Composite
Pipe Repair<BR><BR></FONT></DIV><BR><FONT face=sans-serif size=2>Concerning
this repair, there is not a commercially available adhesive that is going to
do the job long term. The adhesive I used on Wayne's pipe is an aerospace
grade epoxy called Hysol 9394, rated at 350F. AT 350F this epoxy exhibits
about 25% of its room temperature strength-and this is about the best room
temperature curing high temp epoxy available-in short all the stuff such
as JB weld is crap at the temperatures we are talking about. The inlet temp of
our mufflers makes for a brutal environment and unfortunately anything that
cures at room temperature just is not going to do the job very well. In
reality Hysol 9394 is borderline. No easy answer here, and is evident by the
constant postings about burned out inlets....there is a problem with the
composite mufflers. Actually there is an answer, but I do not think our
pattern market can afford it. <BR><BR><BR><BR>Gray Fowler<BR>Principal
Chemical Engineer<BR>Composites Engineering</FONT> <BR><BR><BR>
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<TD><FONT face=sans-serif size=1><B>"Wayne Galligan"
<wgalligan@goodsonacura.com></B></FONT> <BR><FONT face=sans-serif
size=1>Sent by: discussion-request@nsrca.org</FONT>
<P><FONT face=sans-serif size=1>09/23/2003 10:33 AM</FONT> <BR><FONT
face=sans-serif size=1>Please respond to discussion</FONT> <BR></P>
<TD><FONT face=Arial size=1> </FONT><BR><FONT
face=sans-serif size=1> To:
<discussion@nsrca.org></FONT> <BR><FONT
face=sans-serif size=1> cc:
</FONT> <BR><FONT face=sans-serif size=1>
Subject: Re: ES Composite Pipe
Repair</FONT></TR></TBODY></TABLE><BR><BR><BR><FONT face=Arial
size=2>Hopefully Gray Fowler will see this post. He repaired my pipe by
using a piece of 7/8" aluminum wing tub and used a special high temp epoxy and
some fiberglass. Has held up well all year.</FONT> <BR><FONT face=Arial
size=2> </FONT> <BR><FONT face=Arial size=2>Wayne G.</FONT> <BR><FONT
face="Times New Roman" size=3>----- Original Message ----- </FONT><BR><FONT
face="Times New Roman" size=3><B>From:</B> </FONT><A
href="mailto:CCzarnik@arclp.com"><FONT face="Times New Roman" color=blue
size=3><U>Chuck Czarnik</U></FONT></A><FONT face="Times New Roman" size=3>
</FONT><BR><FONT face="Times New Roman" size=3><B>To:</B> </FONT><A
href="mailto:discussion@nsrca.org"><FONT face="Times New Roman" color=blue
size=3><U>discussion@nsrca.org</U></FONT></A><FONT face="Times New Roman"
size=3> </FONT><BR><FONT face="Times New Roman" size=3><B>Sent:</B> Tuesday,
September 23, 2003 10:30 AM</FONT> <BR><FONT face="Times New Roman"
size=3><B>Subject:</B> ES Composite Pipe Repair</FONT> <BR><BR><FONT
face=Arial size=2>I have one of these pipes with a damaged inlet. I
found an aluminum tube that fit inside the inlet almost perfectly and tried to
JB weld it in and clamp from the outside. That lasted about 15-20
flights, and now it leaks like crazy. Is there any kind of epoxy or
other sealant (e.g. high temp silicone) that will hold up better to the heat?
Pipe is used with a YS 140, so it gets pretty hot. I hate to let
this pipe go just yet. Any help appreciated! Chuck</FONT>
<BR><FONT face="Times New Roman" size=3> </FONT> <BR><FONT
face="Times New Roman" size=3> </FONT>
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