<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=iso-8859-1">
<META content="MSHTML 6.00.2900.2873" name=GENERATOR></HEAD>
<BODY bgColor=#ffffff>
<DIV><FONT face=Arial size=2>I think the "settling in" is due to the coating. I
never experienced this with the bare unidirectional kevlar.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=rcmaster199@aol.com
href="mailto:rcmaster199@aol.com">rcmaster199@aol.com</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, May 09, 2006 5:40 PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] Elevator
trim change</DIV>
<DIV><BR></DIV>
<DIV style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana'">
<DIV>
<DIV>Nat, et al, </DIV>
<DIV> </DIV>
<DIV>Kevlar actually has a negative COE, which, in theory at least,
means it expands as it gets cooler. I saw a little of that in the stuff I used
to make (the teflon coated type). Georgie is right that it took a couple weeks
of settling in before adjustments held well over time. The negative COE still
showed up when temps dropped, however, in a pull-pull set-up, it
generally means nothing.</DIV>
<DIV> </DIV>
<DIV>As far as very low COE of carbon tow, yup that's correct. Carbon in
a plastic matrix isn't quite as clear. Fiberglass in a plastic matrix has
similar issues. It's the delta between the two material types that important.
In my experience they move enough to require a click of trim change as temp
varies, fairly normal this time of year in the NE. </DIV>
<DIV> </DIV>
<DIV>Matt</DIV> <BR>-----Original Message-----<BR>From: Nat Penton
<natpenton@centurytel.net><BR>To: NSRCA Mailing List
<nsrca-discussion@lists.nsrca.org><BR>Sent: Tue, 9 May 2006 13:08:26
-0500<BR>Subject: Re: [NSRCA-discussion] Elevator trim change<BR><BR>
<STYLE>.AOLPlainTextBody {
FONT-SIZE: 12px; MARGIN: 0px; COLOR: #000; FONT-FAMILY: Tahoma, Verdana, Arial, Sans-Serif; BACKGROUND-COLOR: #fff
}
.AOLPlainTextBody PRE {
FONT-SIZE: 9pt
}
.AOLInlineAttachment {
MARGIN: 10px
}
.AOLAttachmentHeader {
BACKGROUND: #f9f9f9; BORDER-BOTTOM: #e9eaeb 2px solid
}
.AOLAttachmentHeader .Title {
PADDING-RIGHT: 0px; PADDING-LEFT: 10px; BACKGROUND: #e9eaeb; PADDING-BOTTOM: 1px; FONT: bold 11px Tahoma; COLOR: #666666; PADDING-TOP: 3px
}
.AOLAttachmentHeader .FieldLabel {
PADDING-RIGHT: 10px; PADDING-LEFT: 9px; PADDING-BOTTOM: 1px; FONT: bold 11px Tahoma; COLOR: #666666; PADDING-TOP: 1px
}
.AOLAttachmentHeader .FieldValue {
FONT: 11px Tahoma; COLOR: #333333
}
</STYLE>
<DIV id=AOLMsgPart_3_6b6fb72b-0c96-4239-8ec4-240de41b5b73>
<STYLE></STYLE>
<DIV><FONT face=Arial size=2>George I agree with your comments with one
exception. The Sullivan controll line kevlar is the best of all worlds for our
hookups. There is no stretch, no weight, no electromagnetic problems. It is
unidirectional with, probably, a low COE like carbon.</FONT></DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=geobet@gis.net
href="javascript:parent.ComposeTo('geobet@gis.net');">george w. kennie</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="javascript:parent.ComposeTo('nsrca-discussion@lists.nsrca.org');">NSRCA
Mailing List</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, May 09, 2006 12:50
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion]
Elevator trim change</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>Sorry Guys, I have some thoughts and opinions
on this that are based upon my own logic, however flawed,and which may or
may not coincide with someone else's logic.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Anytime you have a control system that is based
on a system that incorporates an oscillatory motion (fore/aft up/dn) the
ultimate result of this motion will generate wear somewhere within the
system and wear translates to slop.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I think my contention would be that Lance had
it right in the first place and was ill-advised by some well
intentioned souls who may have had what they assumed to be good
results, but failed to base their conclusions on really long-term
experience(who really knows for sure?)</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I have long felt that pull-pull cables
(vinyl-coated steel) present the most reliable connection for the
elevator and rudder inputs.They do not require that the horns
be expensive ball-bearing units, they are the lightest by far and due
to the fact that they are always under tension the generated wear manifests
itself against only one wear surface instead of the two in the push-pull
set-up. If the installation can be modified in such a way that the servo can
be mounted just ahead of the stab the COE of the fuse can be rendered
virtually inaffective. </FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>With time, you may experience some slight
lessening in cable tension (very slight) which can quickly be rectified by
disconnecting the clevis and spinning the eye a half turn at each
connection.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>I have used Kevlar thread and continue to do
so, but not on two-meter projects.Kevlar stretches for quite a period of
time before settling to it's final length.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Just my $.02</FONT></DIV>
<DIV><FONT face=Arial size=2>G.</FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=patterndude@comcast.net
href="javascript:parent.ComposeTo('patterndude@comcast.net');">Lance Van
Nostrand</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="javascript:parent.ComposeTo('nsrca-discussion@lists.nsrca.org');">NSRCA
Mailing List</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, May 08, 2006 8:55
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion]
Elevator trim change</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>This rots. I've used pull pull forever
and switched to the deps system due to heavy promotion by Mike Harrison
and Bryan Hebert. They say it will be more precise. Can anyone
corroborate this? I'd hate to switch to a system that has more
downside than upside.</FONT></DIV>
<DIV><FONT face=Arial size=2>--Lance</FONT></DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=gfowler@raytheon.com
href="javascript:parent.ComposeTo('gfowler@raytheon.com');">Gray E
Fowler</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="javascript:parent.ComposeTo('nsrca-discussion@lists.nsrca.org');">NSRCA
Mailing List</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, May 08, 2006 10:51
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion]
Elevator trim change</DIV>
<DIV><BR></DIV><BR><FONT face=sans-serif size=2>Fiberglass laminate CTE
= 6 X10 -6/in/in/F</FONT> <BR><BR><FONT face=sans-serif size=2>CF
pushrod CTE = 1 X 10 -6 /in/in/F ....could actually be 0 if fiber
vloume is > 58% an all uni fibers</FONT> <BR><BR><BR><BR><FONT
face=sans-serif size=2><BR><BR><BR>Gray Fowler<BR>Principal Chemical
Engineer<BR>Composites Engineering</FONT>
<DIV>
<HR>
<DIV></DIV>_______________________________________________<BR>NSRCA-discussion
mailing list<BR><A
href="javascript:parent.ComposeTo('NSRCA-discussion@lists.nsrca.org');">NSRCA-discussion@lists.nsrca.org</A><BR><A
href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion"
target=_blank>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</A></DIV></BLOCKQUOTE>
<DIV>
<HR>
<DIV></DIV>_______________________________________________<BR>NSRCA-discussion
mailing
list<BR>NSRCA-discussion@lists.nsrca.org<BR>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</DIV></BLOCKQUOTE>
<DIV>
<HR>
<DIV></DIV>_______________________________________________<BR>NSRCA-discussion
mailing
list<BR>NSRCA-discussion@lists.nsrca.org<BR>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
<DIV>
<HR>
<DIV></DIV>Internal Virus Database is out-of-date.<BR>Checked by AVG Free
Edition.<BR>Version: 7.1.385 / Virus Database: 268.4.4/318 - Release Date:
4/18/2006<BR></DIV></DIV></BLOCKQUOTE></DIV><!-- end of AOLMsgPart_3_6b6fb72b-0c96-4239-8ec4-240de41b5b73 -->
<DIV class=AOLPlainTextBody
id=AOLMsgPart_4_6b6fb72b-0c96-4239-8ec4-240de41b5b73><PRE><TT>Internal Virus Database is out-of-date.
Checked by AVG Free Edition.
Version: 7.1.385 / Virus Database: 268.4.4/318 - Release Date: 4/18/2006
</TT></PRE></DIV><!-- end of AOLMsgPart_4_6b6fb72b-0c96-4239-8ec4-240de41b5b73 -->
<DIV class=AOLPlainTextBody
id=AOLMsgPart_5_6b6fb72b-0c96-4239-8ec4-240de41b5b73><PRE><TT>_______________________________________________
NSRCA-discussion mailing list
<A href="mailto:NSRCA-discussion%40lists.nsrca.org">NSRCA-discussion@lists.nsrca.org</A>
<A href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion" target=_blank>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</A>
</TT></PRE></DIV><!-- end of AOLMsgPart_5_6b6fb72b-0c96-4239-8ec4-240de41b5b73 -->
<SCRIPT>
if ((parent != null) && (parent.ProcessCommand != null))
parent.ProcessCommand('bodyLoaded', true);
</SCRIPT>
</DIV></DIV>
<P>
<HR>
<P></P>_______________________________________________<BR>NSRCA-discussion
mailing
list<BR>NSRCA-discussion@lists.nsrca.org<BR>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
<P>
<HR>
<P></P>Internal Virus Database is out-of-date.<BR>Checked by AVG Free
Edition.<BR>Version: 7.1.385 / Virus Database: 268.4.4/318 - Release Date:
4/18/2006<BR></BLOCKQUOTE></BODY></HTML>