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<DIV><FONT size=2>Wheel pants are an aerodynamic aid, reducing drag of the
wheels a suprizing amount. They also look cool. ;)</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>The plane would be expected to need slightly different
elevator trim if you delete the wheel pants. because the issue is a
difference in coeficient of drag of the wheel, the effect will be speed
dependant.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>In essence you expect to need more up trim as the plane goes
faster due to the landing gear not being retractable. The wheel pants
REDUCE the amount of trim change due to speed, but do not eliminate it.
</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Retracts with close fitting doors that completely cover the
wheel wells (like a full scale P-51) virtually eliminates the landing gear drag,
thus eliminating a source of speed related trim change.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>OK... there's the theory...</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Practicly speaking, wheel pants have weight (can be a factor
in meeting weight limit) and they can be a royal pain to keep on straight.
Some models will trim out fine with or without the wheel pants. Some the
trim difference will be significant.</FONT></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=roymedina@verizon.net href="mailto:roymedina@verizon.net">Roy M
Medina</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 Mailing List</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, May 04, 2007 5:01 PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [NSRCA-discussion] Wheel Pants
Yes or No</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>I am flying my Evolis XXL in a outdoor
carpet runway. Field is showing age with many holes that easily snag the
wheel pants while taxing. I am putting 70mm wheels now without any
pants. Just wondering what everyone else is doing on wheel pants yes or
no. Is there any advantage in performing the routines with pants. Given
the various type of fields out there maybe some fellow Bush pilots might have
some Ideas.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Roy M</FONT></DIV>
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