No fixed tips?

[Bill Glaze]

Eric:
You've done it both ways.  What's your opinion vis a vis the capped vs. 
non-capped ailerons?  As applied to snap rolls and other figures?  Bill 
Glaze

Grow Pattern wrote:

> 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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