Thanks fot the input, folks. The wing is now straight and true.
I rememebered last night that the DAW site does have excellent instructions on
"tweaking".
http://www.davesaircraftworks.com/
Here is what I did:
Since the covering film is adhered to the foam, you won't see the wrinkles simply by
twisting. However, if you twist and gently heat (250 degrees) the wing, the adhesive
will soften and the wrinkles (lower film tension) will appear. With the wing still
twisted, iron and shrink these wrinkles out with a higher heat setting (325 deg). As
it cools, rub the heated wing surface with a soft cloth. Twist & shrink top and
bottom, and it's done.
It wasn't that difficult, and I now have a wing with a even ~2 degrees of washout in
each wing half. Weather permitting, I'll do test flights this afternoon.
--Bill
On Thu, 18 May 2000 08:39:38 -0400 Bill Harris <[EMAIL PROTECTED]> wrote:
I built a MAD Highlander with the dihedral wing/aileron option as a foamie sloper and
although it test-flies OK, it is going to need some work to "tweak" it. One wing half
has 2 degrees of washout (which is good) but the other wing half has 2 degrees of
wash_in_, which ain't good. I seem to recall reading that you can twist-and-reshrink
a foamie wing, but an initial test twist didn't raise wrinkles (like on a built-up
wing), so I suspect may have to strip-re3M77-retape-recover that wing half. No big
deal, but I'll need to pop into town and pick up another roll of Ultracote.
This is embarrassing... I thought that I had checked and double-checked the wing when
I built it in January. Oh well.
--Bill
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