Top Flite TOPA0905 - Manual (Page 12)

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2. Slide the two top wings together. On the bottom
of the right wing you will see a threaded hole. Install
a 6-32 socket head cap screw into the hole. Make
sure the wings are tight against each other and then
tighten the screw against the wing joiner.
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3. Install the top wing onto the top of the fuselage.
Secure the wing to the fuselage with two
1/4-20 x 2" [50mm] nylon wing bolts.
Install the Struts
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1. On the top of the bottom wing and the bottom of
the top wing locate the pinholes that the manufacturer
made in the MonoKote film. Cut the covering on the
pinholes to reveal the 4-40 blind nuts pre-installed in
the wing. Install a metal bracket in each of the holes
with a 4-40 x 1/2" [13mm] socket head cap screw,
#4 flat washer and #4 lock washer. Do this for both the
left and right wings.
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2. Slide the struts in place for both the left and right
wings. When positioning them the trailing edge of the
strut should be just in front of the hinge line for the flap.
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3. When you are satisfied with the positioning of
the struts, mark the location of the holes from the
bracket onto the strut. Drill a pilot hole through the
marks with a 1/16" [1.6mm] drill. Then, drill through
the pilot hole with a 1/8" [3mm] bit.
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