Steve-
This was one of the topics discussed in the Aeropoxy forum at Oshkosh this year.
They are a big proponent of post-curing prior to painting. They claim that
all fiberglass should be post-cured. I am a long way from being an expert; that
is why I was in the forum. They suggest something like 140 degrees for several
hours. Those of us living in the heat (AZ, FL, etc.) could probably get
there by putting the pieces in the attic for a day. You may want to talk to
them about your problem. The other thing they pointed out is that most of the
organizations selling their, and other, products are not well qualified to
address
problems such as print through. You may want to try contacting them and
see if they have a fix prior to doing anything.
Jim Puglise, A-283
-------------- Original message --------------
From: "Terry Seaver (terrys)" <terrys@cisco.com>
Hi Steve,
I believe what you are seeing is what I have been calling print-thru, not
heat/expansion
related. Print-thru happens on foam cored surfaces that have something
glassed to its back, like the fiber glass reinforcing for your fuel filler
neck. As your plane ages, you will find more print-thru on the fuse and wings.
regards,
Terry Seaver
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Steve Hagar
Sent: Wednesday, September 13, 2006 8:52 AM
Subject: Europa-List: Moving fiberglass
This issue had come up before some time ago and I need my memory refreshed. Am
flying around in the hot AZ sun and differential expansion is rearing its ugly
head. This is especially true on the fuselage right around the area where the
fuel filler maniflod is attached to the inside. Some very prominent waves
have developed in the skin here. I am hesitant on filling these to smooth
things
out. I am assuming that it is reasonable to expect that things will keep
on moving through temperature cycling. Does anyone have any history out there
with flying in very hot weather and having the fiberglass move around? Have
you found this to settle down after some time? Has anyone come up with a
different mounting routine for the manifold after getting the ripples?
Steve Hagar
N40 SH
A143
13 hrs
Steve Hagar
hagargs@earthlink.net
<html><body>
<DIV>Steve-</DIV>
<DIV> </DIV>
<DIV>This was one of the topics discussed in the Aeropoxy forum at Oshkosh this
year. They are a big proponent of post-curing prior to painting.
They claim that all fiberglass should be post-cured. I am a long way from
being an expert; that is why I was in the forum. They suggest something
like 140 degrees for several hours. Those of us living in the heat (AZ,
FL, etc.) could probably get there by putting the pieces in the attic for a
day. You may want to talk to them about your problem. The other
thing
they pointed out is that most of the organizations selling their, and other,
products are not well qualified to address problems such as print through.
You may want to try contacting them and see if they have a fix prior to
doing anything.</DIV>
<DIV> </DIV>
<DIV>Jim Puglise, A-283</DIV>
<BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px
solid">-------------- Original message -------------- <BR>From: "Terry Seaver
(terrys)" <terrys@cisco.com> <BR>
<META content="MSHTML 6.00.2900.2976" name=GENERATOR>
<DIV dir=ltr align=left><SPAN class=786084416-12092006><FONT face=Arial
color=#0000ff>Hi
Steve,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=786084416-12092006><FONT face=Arial
color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=786084416-12092006><FONT face=Arial
color=#0000ff>I
believe what you are seeing is what I have been calling print-thru, not
heat/expansion related. Print-thru happens on foam cored surfaces that
have something glassed to its back, like the fiber glass reinforcing for your
fuel filler neck. As your plane ages, you will find more print-thru on
the fuse and wings.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=786084416-12092006><FONT face=Arial
color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=786084416-12092006><FONT face=Arial
color=#0000ff>regards,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=786084416-12092006><FONT face=Arial
color=#0000ff>Terry
Seaver</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=786084416-12092006><FONT face=Arial
color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=786084416-12092006><FONT face=Arial
color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=786084416-12092006><FONT face=Arial
color=#0000ff></FONT></SPAN> </DIV><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma><B>From:</B> owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] <B>On Behalf Of </B>Steve
Hagar<BR><B>Sent:</B> Wednesday, September 13, 2006 8:52 AM<BR><B>To:</B>
europa-list<BR><B>Subject:</B> Europa-List: Moving
fiberglass<BR></FONT><BR></DIV>
<DIV> </DIV>
<P>
<DIV>This issue had come up before some time ago and I need my memory
refreshed.
Am flying around in the hot AZ sun and differential expansion is
rearing its ugly head. This is especially true on the fuselage right
around
the area where the fuel filler maniflod is attached to the inside. Some
<STRONG>very</STRONG> prominent waves have developed in the skin here.
I am hesitant on filling these to smooth things out. I am assuming that
it is reasonable to expect that things will keep on moving through
temperature cycling. Does anyone have any history out there with flying
in very hot weather and having the fiberglass move around? Have
you found this to settle down after some time? Has anyone come up
with a different mounting routine for the manifold after getting the
ripples?</DIV>
<DIV> </DIV>
<DIV>Steve Hagar</DIV>
<DIV>N40 SH</DIV>
<DIV>A143</DIV>
<DIV>13 hrs</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>Steve Hagar</DIV>
<DIV><A href="mailto:hagargs@earthlink.net";>hagargs@earthlink.net</A></DIV>
<DIV> </DIV>
<P></P><PRE><B><FONT face="courier new,courier" color=#000000>
</B></FONT></PRE><PRE><B><FONT face="courier new,courier" size=2 color000000?>
</B></FONT></PRE></BLOCKQUOTE>
<pre><b><font size=2 color="#000000" face="courier new,courier">
</b></font></pre></body></html>
|