Great Planes Tiger Moth 60 ARF - GPMA1330 - Manual (Page 9)

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1. Locate the nine die-cut ply wing joiners. Note that
there will be three matching wing joiners which make up the
bottom wing joiner. Mark these “bottom wing joiner.” There
will also be six matching wing joiners which make up the two
joiners for the top wing. Mark these “top wing joiner.”
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2. Use 6-minute epoxy to glue the joiners together to form
three plywood joiners as shown.
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3. After the epoxy has cured, sand off any excess glue
and test fit the lower wing joiner into the two wing halves,
making sure the lower wing halves fit together properly and
form a good fitting joint.
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4. Using 30-minute epoxy, thoroughly coat the root rib of
both lower wing halves and the wing joiner. Be sure to apply a
generous amount of epoxy into the inside of the wing joiner
pocket. Important: Make sure the joiner is fitted upright to
ensure the proper dihedral. Then, join the wing halves tightly,
holding them together. Use a paper towel to wipe away excess
epoxy that comes out of the wing. Tightly hold the wing together
with masking tape, making certain both halves are in full
contact and that the leading and trailing edges align.
(Proceed to the next step immediately!)
The following sketch shows how the lower wing dihedral
is measured.
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5. Check for the correct dihedral angle while joining the
wing. Place one wing panel on a flat surface and measure
the distance from the elevated wing tip to the table top. This
distance should be 4-3/8" [111mm] measured at the wing tip
former, located 4" [102mm] back from the leading edge.
Note: You will need to avoid the servo to get an
accurate measurement.
You can use a paper towel dampened with rubbing alcohol
for any epoxy clean-up. Do not disturb the wing until the
epoxy has fully hardened.
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6. Outline the 1/8" [3mm] plywood wing bolt plate on the
bottom of the lower wing and cut the MonoKote covering
away using a Hobbico Hot Knife (HCAR0770). You may
also use a hobby knife with a #11 blade. If using this
method be sure not to cut into the wood under the covering
as this will weaken the structure.
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7. After removing the covering use 6-minute epoxy to
glue the wing bolt plate to the wing and allow the epoxy to
cure completely.
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8. Drill two 17/64" [6.7mm] holes through the wing bolt
plate from the top of the wing using the pre-drilled holes in
the wing as a guide.
JOIN THE WINGS
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