Message-ID: <000901bf8095$f26d6040$af31143f@oemcomputer>
Reply-To: "dfs" <dfs@gateway.net>
From: "dfs" <dfs@gateway.net>
To: "Lancair List" <lancair.list@olsusa.com>
Subject: Stub Wing Skins
Date: Sat, 26 Feb 2000 12:12:52 -0800
Mime-Version: 1.0

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I just happened to be looking thru my photos of the build process and it
reminded me of how it was done in our shop. IMHO, this may be as good as any
other methods I've heard of.

1. Four very straight lengths of 2x4 were cut to fit on the top and bottom
of the wing stub along the spar/skin contact areas. The bottom one was
wrapped in a plastic film to keep it from becoming part of the airplane from
the inevitable adhesive squeeze-out at the skin edge along the main spar.

2. six pieces of 1x4 clear pine were cut so that they were about 12 inches
longer than the stub-wing chord and 3/8 in. holes were drilled thru each end
a couple of inches from the ends.

3. Steel hardware store 1/4 in. threaded rods were inserted thru each end of
pairs of the 1x4 boards. The length of the rods need to allow the boards to
be slipped over the stub-wings plus the 2x4's. Washers and nuts were
installed on each end of the rods, capturing the two boards between them.

4. With the stub-wing skin in place (I remember this was a two-man job to
keep the skin spread enough to keep from skimming off all the adhesive), and
a few clecos inserted at the skin/fuselage mating flanges to hold it all in
position, the straight 2x4's were stuck in position with a couple dabs of
hot glue on the outside of skin, along the glue lines.

5. Finally, the 1x4 and threaded rod assemblies are slipped over the
stub-wing and 2x4's (boards running fore and aft) and the nuts on each end
run down to capture the 2x4's against the stub-wing (this also is probably a
two-man task - unless you happen to have four arms with an eyeball on the
tip of a couple of fingers). By judiciously tightening the nuts on each end
of the boards (which are now clamps), you can apply the desired squeeze
pressure along the glue lines with the 2x4's insuring that the skins remain
straight and the pressure is evenly distributed.

I recommend that you do a dry run to be sure everything fits and the nuts
are run down to approximately the correct position. Makes the final
installation much easier.

Takes longer to describe than accomplish.

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Please send your photos and drawings to marvkaye@olsusa.com.
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