Top Flite TOPA0310 - Manual (Page 35)

Mount the wing
❏ 1. As you did for the wing, (shown on page 18 in
steps 6, 7 & 8), build the joiner box top and bottom
for the fuse from two 1/8" x 1-11/16" x
10-9/16" ply sheets and two 1/4" x 3/8" x 36"
basswood sticks.
❏ 2. Trim the ends of the joiner box bottom and top so
they are exactly the same width as the fuselage on the
1/4" x 1/2" longerons at former 4. Use 30-minute
epoxy to glue one of the joiner box assemblies to the
longerons and the front of F4C.
Note: F4C is two
layers of laser-cut 1/8" ply, previously installed.
❏ 3. Use your bar sander with 80-grit sandpaper to true
the edges of formers 3 & 4 and the joiner box bottom.
❏
4. Cut the remainder of the cardboard tube to a
length of 10-7/8" and harden the ends with thin CA
just the same as you did for the wing tubes.
❏ 5. Test clamp the joiner box top and the cardboard
joiner tube to the fuse with the three die-cut 1/8"
plywood joiner box webs . Once you are sure all the
parts fit well, glue the assembly into position with 30-
minute epoxy. Be certain the cardboard tube is
centered in the fuse. Hint: Fit the aluminum joiner
tube into the cardboard tube so it cannot be
inadvertently deformed during clamping.
❏ 6. Test fit both die-cut 1/8" plywood wing saddle
bases to the fuse sides between formers 4, 5 and 6
over the top longerons, and hold them in position
with clamps or T-pins.
Now for the moment of truth. Hopefully you have a
large workbench!
❏ 7. Place the die-cut 1/8" plywood fuselage root
ribs W1F on both sides of the fuse over the ends of
the cardboard tube, then slide the wing panels into
position with the aluminum joiner tube.
❏
8. Align the fuselage root ribs with the root ribs of
the wing panels, then use C-clamps to hold the fuse
root ribs to the wing. The photo illustrates the root
ribs clamped to the wing (but the wing and root ribs
should be on the fuse).
❏ 9. Glue two 1/2" x 1" x 3/4" basswood wing bolt
blocks, centered vertically, to the inside of rib 1 on
both wing panels where shown on the plan.
❏
10. With the fuse root ribs clamped to the wing,
remove the wing panels from the fuse. Drill 5/32"
holes through the fuse root ribs and the wing bolt
blocks in both wing panels. Insert 6-32 blind nuts into
the wing bolt blocks of both wing panels. Fasten both
fuse root ribs to both wing panels with 6-32 x 1"
socket head cap screws and #6 washers—now your
wing is
guaranteed to align with the fuse root rib. You
may remove the C-clamps.
Now we have to glue the fuse root rib to the fuse...
❏
11. With both fuselage root ribs bolted to the wing
panels, place the panels on the fuse with the joiner
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