Top Flite TOPA0215 - Manual (Page 13)

- 13 -
Join the Wings
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1. Glue the die-cut 1/8" [3mm] ply sub spar dowel
brace to the balsa sub spars on the left wing panel
as done on the right wing panel.
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2. At the root rib of the left wing panel, cut two 1/8"
[3mm] slots in W1 at the leading edge and trailing
edge for the leading edge and trailing edge braces.
Cut a 1/16" [1.6mm] slot through the two W1 ribs for
the Dihedral Brace.
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3. Test fit the two wing panels together, inserting
the wing joiners from the right wing panel into the
slots you just cut in the left wing panel.
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4. When you are satisfied with the fit, mix 1 oz. of
30-minute epoxy. Glue the joiners and the wing
together with 30-minute epoxy, making sure you
apply liberal amounts to the joiner and the spars.
Before the glue dries, place one wing flat on the
building surface and measure the distance from the
table to the bottom of the wing. The distance should
be 1-3/4". Block the wing to maintain this distance
while the glue dries.
Now that both of the wing panels are joined, go back
to the section, “Finish the Bottom of the Wing”.
Follow the instructions to finish the bottom of the left
wing the same way you did the right wing.
Build the Wingtip
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1. Locate the die-cut 3/32" [2.4mm] balsa
wingtip parts. Glue the two pieces together to form
the completed wingtip.
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2. On the right wing test fit the wing tip in place,
making sure you have a good fit between the tip and
the end of the wing.
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3. When satisfied with the fit, turn the wingtip over
and make two marks on the bottom of the tip. From the
tip, measure down 5/8" [15.9mm] and draw a line
perpendicular from the edge of the wing tip. Measure
down from that line another 5/8" [15.9mm] and draw
another line perpendicular from the edge of the wing tip.
❏ ❏
4. With your hobby knife, score the lines half
way through the balsa. The scores will allow you to
bend the end slightly when installing the wing tip.
❏ ❏
5. Using medium CA, glue the wingtip in place
to the end of the wing. Be sure that the wingtip and
the wing are flat on the building board before gluing