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Yep--"Figure 8" stitch, with heavy weight waxed thread. Worked just
fine, too. Bill Glaze<br>
<br>
<a class="moz-txt-link-abbreviated" href="mailto:Rcmaster199@aol.com">Rcmaster199@aol.com</a> wrote:<br>
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<div>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</div>
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<div>Yor observation is correct: a rounded edge hinged with present
hinges, will tend to bind.</div>
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<div>MattK</div>
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<div>In a message dated 11/25/2004 12:47:09 AM Eastern Standard Time,
<a class="moz-txt-link-abbreviated" href="mailto:patterndude@comcast.net">patterndude@comcast.net</a> writes:</div>
<blockquote
style="border-left: 2px solid blue; padding-left: 5px; margin-left: 5px;"><font
style="background-color: transparent;" color="#000000" face="Arial"
size="2">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 class="moz-txt-link-rfc2396E" href="mailto:jpavlick@idseng.com"><jpavlick@idseng.com></a><br>
To: <a class="moz-txt-link-rfc2396E" href="mailto:discussion@nsrca.org"><discussion@nsrca.org></a><br>
Sent: Wednesday, November 24, 2004 8:38 PM<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 class="moz-txt-link-freetext" href="http://www.idseng.com">http://www.idseng.com</a><br>
><br>
><br>
>> -----Original Message-----<br>
>> From: <a class="moz-txt-link-abbreviated" href="mailto:discussion-request@nsrca.org">discussion-request@nsrca.org</a><br>
>> [<a class="moz-txt-link-freetext" href="mailto:discussion-request@nsrca.org">mailto:discussion-request@nsrca.org</a>]On Behalf Of John Ferrell<br>
>> Sent: Wednesday, November 24, 2004 5:43 PM<br>
>> To: <a class="moz-txt-link-abbreviated" 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 class="moz-txt-link-freetext" href="http://DixieNC.US">http://DixieNC.US</a></font></blockquote>
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