[SPAM] Re: No fixed tips?

[Rcmaster199 at aol.com]

I have done it both ways and notice virtually identical performance as long  
as the aileron areas (as a percentage and planform) are unchanged. What I have 
 found stops the snap accurately and repeatably is a light wing. Have not  
required servo pots in either type after 100's of flights. Don't know why some  
are losing servos after a few flights, but do know what works for me.
 
Commercial jets flying at 600 mph and models flying at 100mph, don't have  
much in common.
 
MattK
 
In a message dated 1/30/2005 12:30:22 PM Eastern Standard Time,  
pattern4u at comcast.net writes:

The current theory is that the ailerons all the  way out to the tips, stop 
the snap more accurately.
 
Eric.

----- Original Message ----- 
From:  _Bill Glaze_ (mailto:billglaze at triad.rr.com)  
To: _discussion at nsrca.org_ (mailto:discussion at nsrca.org)  
Sent: Sunday, January 30, 2005 11:33  AM
Subject: Re: No fixed tips?


Again, with the full-size:  Notice that such luminaries  as Boeing, Douglas, 
et.al don't run their ailerons to the tips, but instead  stop short?    As 
Troy and Doug have stated, the wingtip  vortices generated are the reason.  I had 
a long discussion with Dick  Hanson about this, and he stated that "it didn't 
make any difference on our  models."  Well, from what Troy has discovered 
about aileron pots, it  seems it DOES make a difference.
Bill Glaze

Troy A. Newman  wrote:

They don't fly the same....and the aileron  thru the tip thing wears out 
servo pots faster. I flew a model this past  summer and it went thru aileron servo 
pots in 50 flights. I normally get  well over 100-125 flights. And this was a 
wood model so the vibration was  better damped than a composite fuse.
 
Wing tips have lots of turbulence coming off  of them...then stick a aileron 
in this turbulence. NOPE not the best from  an engineering standpoint. 
 
The answer guys and manufacturers give is it  snaps better. My answer is 
design a good wing and it will snap  better. Copy a good wing and it will snap 
better.  The ailerons  become more effective with the area at the tip....but I 
don't feel it  helps flight performance. Aileron thru the tip is much easier and 
 faster to build than a boxed in version. on the ARFy stuff its  
cheaper...this is the biggest reason I think its done.
 
As for elevators without tips there are no  references. And the same things 
apply
 
All my models have them boxed and will have  them boxed in.
 
Troy

-----  Original Message ----- 
From:  _Tim  Taylor_ (mailto:twtaylor at ftc-i.net)  
To:  _discussion at nsrca.org_ (mailto:discussion at nsrca.org)  
Sent:  Saturday, January 29, 2005 7:46 AM
Subject:  No fixed tips?


No fixed tips at the end of the wing/stab  seems to be the rage. Any real 
reason for this? I really don't care for  this very much as it makes it harder to 
make sure your trim is right and  the elev half's  meet.






 
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