Top Flite TOPA0305 Part 1 - Manual (Page 30)

5. Temporarily join the center section to the
right wing panel with the dihedral braces to make
sure everything fits. Make adjustments where
needed
so the center section fully contacts the right
panel. Separate the wing sections and remove the
dihedral braces.
Read the following five steps before you actually
use any glue
so you understand the procedure and
can gather the items you will need.
6. Mix a batch of 45- or 30-minute epoxy.
Spread a film of epoxy in the outer wing panel
everywhere it contacts the dihedral braces. Spread
a film of epoxy on the 1/8" and 1/16" ply dihedral
braces
except where they will contact the center
section wing panel. Fit the dihedral braces into the
right wing panel. Make certain you fit the braces
rjght side up.
7. Remove excess epoxy from the parts of the
dihedral braces that will contact the center
section.
8. Set the dihedral braces by temporarily
joining the center section to the right wing panel.
Clamp the dihedral braces to the right wing panel
only. Carefully remove the center section and wipe
away excess epoxy with a paper towel.
9. Insert two approximately 2" x 2" pieces of
wax paper between the dihedral braces where they
protrude from the right panel, then insert a piece of
1/8" balsa between the two pieces of wax paper.
Clamp the outer 1/16" ply dihedral braces to the
inner 1 / 8 ply dihedral braces.
10. Use small balsa sticks and small pieces of
paper towel to wipe away all excess epoxy so it will
not interfere with the center section when it is time
to join it to the right wing panel.
11. After the epoxy cures, glue W2 to the
1/16" dihedral braces.
12. Return to step 2 and glue the dihedral
braces in the left wing panel.
13. If you're installing retracts, glue leftover 3/16"
or 1/4" balsa to the front of the forward landing
gear rail and between the rails to support the
sheeting. Use a ballpoint pen or a pencil (not a felt-
tip pen) to trace the outline of the landing gear onto
the rails
so you know where not to apply glue when
you glue on the bottom sheeting. Later, the
sheeting over this area will be removed t o
accommodate the landing gear mounts.
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14. Cut holes and slots in the W l ' s on the ends
of the center section to match the holes for the
servo cords and retract air lines in the W2's of the
outer panels. Cut the holes slightly oversize just in
case they don't align perfectly.
We've temporarily joined the wing panels and
installed the air lines and servo cords in the right
wing panel to mock-up the installation to give you
an idea of how to route them later. If you wish, you
could test your installation now to make sure your
setup will work.
15. Glue a piece of leftover 3/32" balsa to the
center section sheeting aft of the spar (note the
grain direction). Cut a 3/4" hole through the
sheeting at this location for the servo cords and air
lines to exit the wing into the fuse.