Join The Wing - GREAT PLANES Rapture 40 Instruction Manual

12. Test fit the aileron to the wing and torque rod with
the hinges. Use the torque rod to move the aileron up and
down to make sure you can achieve 1/2" [13mm] of both up
and down aileron throw as shown in the control throws chart
on page 36.
13. Make the aileron for the right wing the same way.

Join the Wing

1. Use medium CA or epoxy to glue together three die-
cut 1/8" [3.2mm] plywood wing joiners (four are supplied
but only three are used).
2. Test fit the wing joiner in one wing half, then the other.
Test join the wings with the joiner. Make any adjustments
necessary for a good fit. (Sometimes the ends of the wing
require a little "fine tuning" with a bar sander or the edges of
the joiner might need to be sanded a little.)
3. With the wings temporarily fit together, lay one wing
panel flat on your workbench and measure the distance
between the bottom of the other panel under the bottom
spar at the tip. The distance should be 2-3/8" [60mm] plus or
minus 3/8" [10mm]. If you are not able to achieve this
measurement within the 3/8" [10mm] tolerance, separate
the wing halves and look for anything that may interfere with
the fit such as glue blobs inside the wings where the joiner
goes. Note: It is more important to have a good fit between
the joining wing panels than it is to have exactly 2-3/8"
[60mm] of dihedral.
4. Gather all the items required for joining the wing: 30-
minute epoxy, a mixing cup and mixing stick, an epoxy
brush, masking tape, paper towels and denatured alcohol
(for clean up).
Note: When joining critical components such as the wing
halves, it is imperative to coat all joining parts with
epoxy. In other words, don't coat only one of the
contacting end ribs. Coat the end ribs of both wing
panels. Similarly, don't just coat the joiner. Also coat the
insides of the wing where the joiners go.
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