GREAT PLANES Super Sportster 20, Instruction Book

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3. D JOIN THE WING PANELS
Join the wing panels upside down. Refer to the di-
hedral detail on the plans. Align at the leading and trailing
edges. Use a straight edge to make sure the wing is
straight. Block up the wing 3/4" at the center for the 20
size, 1" for the 40 size and 1-1/4" for the 60 size model. Glue
the wing panels together using epoxy, rechecking the
alignment before the glue sets up. When the glue is dry,
mark the aileron servo well location. The servo well is
located directly behind the spar and in the center of the
top of the wing.
4. D GLASS THE CENTER SECTION OF THE WING
Use 6 ounce glass cloth (or nylon cloth) and glass
the center section glue joint. Use a 4" wide piece of cloth
and polyester resin or epoxy. Sand the center section when
dry. Apply a second coat of resin or epoxy if necessary.
IMPORTANT — Omitting this step will result in a wing fail-
ure during flight and result in a crash.
*Use a 5" wide piece of cloth in the 60 size.
THE AILERONS
1. D PREPARE THE AILERONS
Cut the aileron stock to length and draw a center-
line down the leading edge of the ailerons. Mark and drill
the torque rod holes. Groove the aileron for torque rod
clearance. Make right and left ailerons.
2. D CUT THE HINGE SLOTS; FINAL SAND THE
AILERONS
Mark and cut the hinge slots into the ailerons and
the wing trailing edge. Shape the leading edge of the aile-
rons to a "V". Temporarily install the ailerons with hinges to
check the fit. Final sand the wing tips to match the aileron
contour at neutral. Do not permanently hinge the ailerons
until after they are covered.
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