The problem with using one large spanwise piece on only one surface is that
it's hard to prevent the surface from lifting up if its pushed from
underneath. Thats why the instructions for the Boomerang say to use some
strips that zigzag over the top of the wing and under the aileron, and vice
versa. In this way, forces that try to push the elevon up are countered by
the tape pulling toward the surface of the bottom of the wing, rather then
trying to lift up the covering on to of the wing.
Personally, I prefer what has come to be know as the compression hinge. In
this hinge, the aileron is double beveled, and tape is placed span wise on
top and bottom. The tape actually bows in along the bevel line, so the two
pieces of tape touch, forming the hinge.
At 07:11 PM 7/8/00 -0700, Steve Witt wrote:
>On Thu, 6 Jul 2000, Steve Witt wrote:
>
>> What's a good method of attaching ailerons on a 48" span, combat foamie
>> slope airplane?
>>
>> Thanks...
>>
>
>Thanks for the answers to this question, but I should have been a little
>more specific I guess. The question I meant to ask was, given that one was
>going to use a particular type of tape for the hinges, how specifically
>does one cut the tape to make the hinge? Could one use a wider strip of
>tape span-wise across the wing with half attached to the wing and half to
>the aileron, forming one wide hinge? Is it better to use a narrower strip
>of tape (say 1/2" or so) and have several strips stuck to both the wing
>and aileron, thus forming several hinges?
>
>The instructions for the kits I have are not very specific in this
>regard. I have built one airplane with ailerons (a Boomerang wing) and had
>some elevon flutter problems, so I think I need a little advice in this
>area. I've done some searching on the web and haven't found much as of
>yet. Any pointers or references would be much appreciated.
>
>Thanks again...
>
>
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