<HTML><FONT FACE=arial,helvetica><FONT SIZE=2 FAMILY="SANSSERIF" FACE="Arial" LANG="0">In a message dated 10/2/2002 10:18:41 AM Eastern Daylight Time, getterflash@yahoo.com writes:<BR>
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<BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">Subj:<B>Wing twist, slightly off topic </B><BR>
Date:10/2/2002 10:18:41 AM Eastern Daylight Time<BR>
From:<A HREF="mailto:getterflash@yahoo.com">getterflash@yahoo.com</A><BR>
Reply-to:<A HREF="mailto:discussion@nsrca.org">discussion@nsrca.org</A><BR>
To:<A HREF="mailto:discussion@nsrca.org">discussion@nsrca.org</A>, <A HREF="mailto:pattern@rcmailinglists.com">pattern@rcmailinglists.com</A><BR>
<I>Sent from the Internet </I><BR>
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I recently finished an ARF scale project. During the<BR>
initial flights, I had to put in a lot of left aileron<BR>
trim to sustain level flight. The wing is a two piece<BR>
affair joined with a heavy-walled aluminum tube and<BR>
located with a steel pin. The root ribs of the wings<BR>
are aligned, so there is obviously a twist built into<BR>
one or both wing panels. Does anyone have a method to<BR>
&#34;untwist&#34; a completed wing panel? The<BR>
construction appears to be a standard &#34;D&#34;<BR>
tube, sheeted up to the spar, open bay behind the<BR>
spar. They are covered with some kind to heat shrink<BR>
film. Thanks. <BR>
<BR>
=====<BR>
Bob Kane<BR>
getterflash@yahoo.com</BLOCKQUOTE><BR>
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Bob,<BR>
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If the panel has "wash-in" twist, (tip leading edge positive relative to trailing edge), prop up the TIP trailing edge and push down on the leading edge, while reheating the film. It takes some time and several tries, but you can get a couple degrees out of the built up structure this way. For wash-out (LE negative relative to TE), reverse the steps<BR>
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Matt Kebabjian</FONT></HTML>