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S
ET THE WING panel in its cradle. Using a
straightedge and a sharp knife, trim the
leading edge on the lines you marked in the
last step. Try to keep the cut vertical. Clean
up the cut with a sanding block if required.
Glue the
3
⁄
16
" x
3
⁄
8
" x 24" balsa leading edge
strip in place. We prefer to use aliphatic glue
for this step. Apply the glue to the wood and
spread it into a thin layer. Hold the balsa in
place with masking tape while the glue dries.
If you want to use CA glue, make sure it is
one of the styrofoam compatible types. Do
not use epoxy, since it is very difficult to
sand cleanly.
N
OW THAT you have this nice straight,
strong piece of balsa and foam, we need
to turn it into a wing.
First, trim the balsa skins flush with the root
and tip ends of the foam cores. This does not
have to be a particularly neat job, since we
will be trimming them again later. The
approximate trim lines are shown on the
plans.
Set the wing on the appropriate wing end air-
foil section drawing, and mark the location of
the leading edge trim line on both the root
and the tip of the wing. You will probably
have to move the wing around a bit to get the
best match possible with the drawing. You
want to match up the shapes over as much of the airfoil as
possible. The fit will probably not be perfect, but do the best
you can. Repeat this process until both ends of each panel are
marked. It is a good idea to check the two panels against each
other to make sure they match.
Trim balsa flush with foam
Mark LE trim line
Match wing panels
Phoenix
Page 11
Wing Construction
Mark LE trim line
Trim wing panel
Glue on leading edge
Attach leading edge
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