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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>About to head into the shop to start hacking
ailerons out of my wing cores. For appearance sake, I had planned to top
hinge them. I take it from the discussion, that the way the surface
is hinged has no noticeable effect in flight – provided the gap is
sealed? Correct?</span></font></p>
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10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Ted Sander</span></font></p>
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10.0pt;font-family:Arial;color:navy'> </span></font></p>
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<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;color:windowtext'>-----Original
Message-----<br>
<b><span style='font-weight:bold'>From:</span></b> discussion-request@nsrca.org
[mailto:discussion-request@nsrca.org] <b><span style='font-weight:bold'>On
Behalf Of </span></b>Bill Glaze<br>
<b><span style='font-weight:bold'>Sent:</span></b> </span></font><font size=2 color=black face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;
color:windowtext'>Friday, November 26, 2004</span></font><font size=2
color=black face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;
color:windowtext'> </span></font><font size=2 color=black face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;color:windowtext'>8:53 AM</span></font><font
size=2 color=black face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;
color:windowtext'><br>
<b><span style='font-weight:bold'>To:</span></b> discussion@nsrca.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: wing tip shape</span></font></p>
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<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face=Arial><span style='font-size:10.0pt;font-family:Arial'>Yep--"Figure
8" stitch, with heavy weight waxed thread. Worked just fine,
too. Bill Glaze<br>
<br>
<a href="mailto:Rcmaster199@aol.com">Rcmaster199@aol.com</a> wrote:<br>
<br>
</span></font></p>
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<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face=Arial id="role_document"><span style='font-size:10.0pt;font-family:Arial'>Lance,
the rounded leading edge of the control surface was practiced way back in the
golden (stone?) age of model aviation, when the hinge material was plain
thread. Believe it or not, the control surfaces were literaly sewen into the
wing or stab or fin. Surface actuation essentially allowed the surface to "roll",
ie- it did not pivot about a single axis as present set-ups do</span></font></p>
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<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face=Arial><span style='font-size:10.0pt;font-family:Arial'>Yor observation is
correct: a rounded edge hinged with present hinges, will tend to bind.</span></font></p>
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<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face=Arial><span style='font-size:10.0pt;font-family:Arial'>MattK</span></font></p>
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<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face=Arial><span style='font-size:10.0pt;font-family:Arial'>In a message dated </span></font><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>11/25/2004</span></font><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> </span></font><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>12:47:09 AM</span></font><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> Eastern
Standard Time, <a href="mailto:patterndude@comcast.net">patterndude@comcast.net</a>
writes:</span></font></p>
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<blockquote style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt;
margin-left:3.75pt;margin-top:5.0pt;margin-bottom:5.0pt'>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face=Arial><span style='font-size:10.0pt;font-family:Arial'>Please someone
explain this rounded control surface thing to me. If we use <br>
a CA hinge and but the aileron to the wing, then the only way the surface <br>
can move is if it has a beveled point. A rounded interface will bind
unless <br>
the aileron has a gap to begin with. However, if all we are saying is to <br>
round the part of the bevel that blends into the aileron, then I get it.<br>
<br>
Confused again....<br>
--Lance<br>
<br>
----- Original Message ----- <br>
From: "John Pavlick" <a href="mailto:jpavlick@idseng.com"><jpavlick@idseng.com></a><br>
To: <a href="mailto:discussion@nsrca.org"><discussion@nsrca.org></a><br>
Sent: </span></font><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Wednesday, November 24, 2004</span></font><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'> </span></font><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>8:38 PM</span></font><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><br>
Subject: RE: wing tip shape<br>
<br>
<br>
> Hey, That's how they are on my Super Kaos Jr. Not exactly 45 degrees, but<br>
> the outboard 3" is tapers toward the tip. If you do this by sanding
the<br>
> bottom edge of the aileron at the tip, you also add a little washout to <br>
> help<br>
> prevent tip stalls. Not sure if it's enough to make a difference but I can<br>
> land this plane nose high without any surprises. Someone mentioned <br>
> rounding<br>
> the leading edge of control surfaces rather than beveling them - I've <br>
> always<br>
> done this unless the surface is really thick (like a barn-door aileron). <br>
> In<br>
> the 1st U.S. R/C Flight School training manual (the red one) the idea of<br>
> control surfaces with round leading edges that are slightly thicker than <br>
> the<br>
> fixed surface is discussed. They claim it reduces flutter (without sealing<br>
> the gaps) and makes the control response less speed sensitive. Has anyone<br>
> tried this? It would be interesting to hear if it works on pattern planes.<br>
><br>
> John Pavlick<br>
> <a href="http://www.idseng.com">http://www.idseng.com</a><br>
><br>
><br>
>> -----Original Message-----<br>
>> From: <a href="mailto:discussion-request@nsrca.org">discussion-request@nsrca.org</a><br>
>> [<a href="mailto:discussion-request@nsrca.org">mailto:discussion-request@nsrca.org</a>]On
Behalf Of John Ferrell<br>
>> Sent: </span></font><font size=2 face=Arial><span style='font-size:
10.0pt;font-family:Arial'>Wednesday, November 24, 2004</span></font><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> </span></font><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>5:43 PM</span></font><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><br>
>> To: <a href="mailto:discussion@nsrca.org">discussion@nsrca.org</a><br>
>> Subject: Re: wing tip shape<br>
>><br>
>><br>
>> If you carry the aileron all the way to the tip it is good<br>
>> medicine to clip<br>
>> the trailing outboard corner at 45 degrees to help suppress any<br>
>> tendency to<br>
>> flutter. It is common practice on combat models.<br>
>><br>
>> John Ferrell<br>
>> My Competition is not my enemy!<br>
>> <a href="http://DixieNC.US">http://DixieNC.US</a></span></font></p>
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