Dynaflite GPMA0525 - Manual (Page 14)

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16. One rib at a time, simultaneously lift up
on the bottom LE skin at each rib as you push
down on the rib. Add a few drops of thin CA to
glue the skin to the rib. Hint: Use a thin metal
ruler or something similar as a
pry bar to lift the
skin to the rib.
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17. Trim another 1/16" x 3" x 24" balsa sheet as
described in step 5 to make a top leading edge skin.
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18. Reposition any T-pins in the bottom spar
that will be concealed when you position the top
leading edge skin and the top center section
sheeting. Apply a bead of medium or thick CA to
the top spar only and glue the top leading edge
skin in position.
(For clarity, the wing panel is not shown on the
building board in this photo, but yours should
still be pinned down).
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19. Glue a die-cut 3/32" balsa gusset to both
sides of rib 2 and the sub trailing edge. Glue an
additional gusset to rib 9 and the sub trailing
edge. This gusset is not shown on the plan and
you’ll have to trim it to fit.
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20. Sheet the top of the center section using
the same 1/16" x 3" balsa sheet you used for the
shear webs and the bottom center section.
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21. Lightly wet the top leading edge skin
with Windex ™ or water, then remove the T-pins
and lift the wing panel from your building board.
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22. Use thin CA to glue the top skin to the
ribs. Do one rib at a time holding the top skin
down until the glue hardens.
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1. Use a razor plane followed by a bar
sander with 80-grit sandpaper to trim both LE
skins even with the front of the ribs.
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2. Trim the end of the wing skins and the
spars even with rib 9.
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3. Glue the 5/16" x 5/16" x 24" balsa leading
edge to the wing. We did it one half at a time by
applying a bead of medium CA to the LE skins
from the middle of the wing outward, then
holding the LE in position for a few moments
until the CA cures. Lift the other end of the LE
from the wing and apply another bead of CA to
the skins from the middle of the wing outward in
the other direction and hold the LE to the wing.
Another method would be to use aliphatic resin
such as Great Planes Pro and hold the LE to the
FINISH THE WING PANEL
14