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Mix a generous amount of 30 minute epoxy and apply a thin layer to the exposed half of the wing joiner, the inside of the wing
joiner box in the wing center-section panel, and to the
entire gluing surface of BOTH root ribs
. Make sure to use enough epoxy
to fill any gaps.
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IMPORTANT
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It is of the utmost importance to the integrity of the glue joint that you apply a generous amount of epoxy to
both
root ribs
and to the wing joiner. Not using enough epoxy can result in wing failure during flight.
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Slide the two wing panels together and realign them. Quickly wipe away any excess epoxy, using a paper towel and rubbing
alcohol, and use pieces of masking tape to hold the two wing panels aligned until the epoxy fully cures.
STEP 3: CHECKING THE GLUE JOINT
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Once the epoxy has fully cured, remove the masking tape and double-check the glue joint. If any gaps are present, mix a small
quantity of 30 minute epoxy and carefully fill any remaining gaps. Quickly remove any excess epoxy, using a paper towel and
rubbing alcohol, and allow the epoxy to thoroughly cure.
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IMPORTANT
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Do not omit this procedure. The parts should fit together tightly, but it's possible to have some small gaps that
appear after the epoxy has cured. To make the glue joint as strong as possible, it's important to fill any gaps, using 30
minute epoxy.
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After the epoxy has fully cured, repeat the previous steps and procedures to install the second wing tip panel onto the other end
of the wing center-section panel.
STEP 4: INSTALLING THE WING MOUNTING BRACKET
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Using a modeling knife, cut away and remove the covering material
from over the wing mounting bracket slot in the bottom of the wing. The
slot is located on the centerline of the wing, 2-1/4" behind the leading
edge. The slot is 3-7/8" long and 1/4" wide.
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Test-fit the plywood wing mounting bracket into the slot, as shown.
When positioned properly, the wing mounting bracket should be pushed
forward as far as possible and the back edge of the wing mounting bracket
should be even with the surface of the wing.
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IMPORTANT
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The notch in the front of the wing mounting bracket hooks under the sheeting on the bottom of the wing. There
will be a gap between the back of the wing mounting bracket and the back of the mounting slot. This is normal.
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When satisfied with the fit and alignment, glue the wing mounting bracket into place, using a generous amount of 30 minute
epoxy. Remove any excess epoxy, using a paper towel and rubbing alcohol, and allow the epoxy to fully cure.
