[WWI] vac wings - I think they can be improved - part 2

Crawford Neil Neil.Crawford at volvo.com
Mon Feb 12 03:22:47 EST 2007

Thanks Carlos, for an excellent post, I haven't seen a lot of made-up
vacs, many vacs are bought, but very few are built, so I can't really
on the question of too thin wings. I suspect you are correct that single

surface vacs are too thin. On the only vac I've built (Deperdussin
I skinned the top surface ala Harry Woodman, and used decal strips for
lower wing tapes, using the vac wings as blanks. I felt this added just 
enough thickness for the Dep wing. Building the Neiuport monoplane I had
interesting experience with the wing profile. What looks fairly simple
actually quite a complicated shape, and surprisingly thick, I had to
up the wing blanks with overlays  of thin plasticard which were then
puttied up. 
And this is on an early plane that I've always thought of as
/Neil C.

-----Original Message-----
From: wwi-bounces at wwi-models.org [mailto:wwi-bounces at wwi-models.org] On
Behalf Of Michael Kendix
Sent: den 11 februari 2007 01:53
To: wwi at wwi-models.org
Subject: Re: [WWI] vac wings - I think they can be improved - part 2

>From: Carlos Carreira <carlos.carreira at netcabo.pt>
>Reply-To: World War I Modeling Mailing List <wwi at wwi-models.org>
>To: World War I Modeling Mailing List <wwi at wwi-models.org>
>Subject: Re: [WWI] vac wings - I think they can be improved - part 2
>Date: Sat, 10 Feb 2007 23:08:15 +0000
>My solution is to create more volume on the underside with thin balsa 
>(easily sanded) and cover it with very thin styrene.
>I think the images talk for themselves, but I'll add some notes. I
>the balsa to the underside of the wing with epoxy, and let it dry for a

>night. No need to cover all the wing, just the concave part including a

>little over the leading edge. Next I sanded (I should have done a
>sanding block with balsa or so, but I didn't because i was in a hurry
>prove my point) and after that I covered it with 0.1mm styrene. I got
>from the plastic separating cheese slices (the cheese stinks but my 
>children like it and I'm glad they do!). It is a little thinner than
>thinner evergreen, but of course this one would do.
>I used 3M Photo Mount spray; I sprayed both surfaces, waited a minute
or so 
>before joining. I then cut the plastic all around and sanded very
>at the perimether. It doesn't add too much to the trailing edge and I'm

>satisfied with the result. I plan to mark the ribs with the double
>It isn't perfect because I was in a hurry to try it (a little less than
>thick at the highest point instead of 1.3) but now I know it can be
>and I'll do like this in all my vacs!
>Some photos:
>Comments, anyone?

Very nice. What about the cheese?


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