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<DIV><FONT face=Arial size=2>I am not familiar with that airplane.</FONT></DIV>
<DIV><FONT face=Arial size=2>Building a foam wing strong,stiff and precise is
easy compared to doing the same with a built up wing.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>All pattern birds I am aware of use symmetrical
airfoils as thick as they need to be to be strong. dihedral is important.
Leading edge sweep is more important than trailing edge sweep. Most designers
like the tips to be 50% of the root but this may be influenced by the difficulty
in cutting foam at greater than a 2:1 ratio. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>The only quality issues that I can think of that
condemn a foam wing core are weight poorly formed beads. If you can build a
built up wing, you can fix everything else!</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Each maneuver flown should be considered when
tinkering with wing parameters. There are a lot of nice planes that are tough to
snap or spin. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I must have an airplane that helps my
weaknesses!</FONT></DIV>
<DIV> </DIV>
<DIV>John Ferrell <BR><A
href="http://DixieNC.US">http://DixieNC.US</A><BR></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=DrMarkMD@aol.com href="mailto:DrMarkMD@aol.com">DrMarkMD@aol.com</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, November 15, 2005 8:18
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> help with chosing airfoil
section's for wing and tail. 2 meter</DIV>
<DIV><BR></DIV><FONT face=arial,helvetica><FONT face=Geneva color=#000000
size=2 FAMILY="SANSSERIF">I was not happy with the cores I got from the kit I
purchased so decided to try to build a hollow composite wing for my Ricochet
electric power and weighing in at 10.75 lb.. Since I will be able
to now pick the sections. I would like to learn from you guys rather than
trial and error. Would you guys mind sharing your choices and thoughts.
<BR><BR>Mark Lamos<BR>Baltimore</FONT><FONT face=Geneva color=#000000 size=2
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