4
Wing Assembly
Note: It is very easy to make two wings of one side, i.e., two right wings. This is a bad thing.
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Tape a sheet of wax paper over the plans to protect the plans and to prevent glue from sticking to
them.
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Remove the two vertical spars from the 1/16” balsa sheet. You will note that they fit together with
a V joint to form the center wing.
Be very careful to make a left and a right wing.
It doesn’t
matter which vertical spar forms the left or right side.
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Slide the ribs into the vertical spars. The 3/32” rib goes in the innermost position. Do not glue yet.
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Position the lower spar caps (the narrower ones) so that they line up with the notches in the ribs.
Ensure that the end of the bottom spar with the arrow shape is towards the center of the wing, that
everything is tight, that the ribs fit fully into the lower spar and that the vertical spar is touching
the lower spar. Once everything is aligned, flow some thin CA into all the joints.
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Position the top spar caps over the ribs. Position as before and glue with thin CA.
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Position the 1/8” trailing edge so that it is flush with the bottom of the ribs and that it is pushed as
far forward as possible. The end that is shaped like an arrow goes towards the center of the wing.
Glue with thin CA.
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Measure and cut the 1/8” hardwood leading edge dowel so that it is flush with the outer edge of
the outermost rib and only goes halfway through the innermost rib. We only go halfway through
the innermost rib to leave room for the short center leading edge dowel. Glue in place with thin
CA.