wing tip shape

[Lance Van Nostrand]

Please someone explain this rounded control surface thing to me.  If we use 
a CA hinge and but the aileron to the wing, then the only way the surface 
can move is if it has a beveled point.  A rounded interface will bind unless 
the aileron has a gap to begin with.  However, if all we are saying is to 
round the part of the bevel that blends into the aileron, then I get it.

Confused again....
--Lance

----- Original Message ----- 
From: "John Pavlick" <jpavlick at idseng.com>
To: <discussion at nsrca.org>
Sent: Wednesday, November 24, 2004 8:38 PM
Subject: RE: wing tip shape


> Hey, That's how they are on my Super Kaos Jr. Not exactly 45 degrees, but
> the outboard 3" is tapers toward the tip. If you do this by sanding the
> bottom edge of the aileron at the tip, you also add a little washout to 
> help
> prevent tip stalls. Not sure if it's enough to make a difference but I can
> land this plane nose high without any surprises. Someone mentioned 
> rounding
> the leading edge of control surfaces rather than beveling them - I've 
> always
> done this unless the surface is really thick (like a barn-door aileron). 
> In
> the 1st U.S. R/C Flight School training manual (the red one) the idea of
> control surfaces with round leading edges that are slightly thicker than 
> the
> fixed surface is discussed. They claim it reduces flutter (without sealing
> the gaps) and makes the control response less speed sensitive. Has anyone
> tried this? It would be interesting to hear if it works on pattern planes.
>
> John Pavlick
> http://www.idseng.com
>
>
>> -----Original Message-----
>> From: discussion-request at nsrca.org
>> [mailto:discussion-request at nsrca.org]On Behalf Of John Ferrell
>> Sent: Wednesday, November 24, 2004 5:43 PM
>> To: discussion at nsrca.org
>> Subject: Re: wing tip shape
>>
>>
>> If you carry the aileron all the way to the tip it is good
>> medicine to clip
>> the trailing outboard corner at 45 degrees to help suppress any
>> tendency to
>> flutter. It is common practice on combat models.
>>
>> John Ferrell
>> My Competition is not my enemy!
>> http://DixieNC.US
>>
>> ----- Original Message -----
>> From: "Jeff Hughes" <jeffghughes at comcast.net>
>> To: <discussion at nsrca.org>
>> Sent: Wednesday, November 24, 2004 4:29 PM
>> Subject: Re: wing tip shape
>>
>>
>
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