Great Planes Gee Bee Profile 40 Kit - GPMA0485 - Manual (Page 10)

NOTE: The wing is built as one piece, upside-down, over
the plan.
D 1. Pin the wing plan to the building board. Cover the
plan with waxed paper or Plan Protector. D 4. Cut the 1/4" x 3/8" x 24" balsa spar doubler in half to
make two 12" sticks. Bevel both ends of spar doublers and
glue them to the wing spars where shown on the plan. Pin
the bottom spar assembly into position over the plan.
D 2. Temporarily pin the 1/4" x 1" x 36" balsa stick over the
TE of the wing plan to create a temporary trailing edge
fixture. This fixture stick is used later to make the wing
leading edge. Cover the fixture with waxed paper or Plan
Protector. Pin the 1/8" x 3/8" x 36" balsa trailing edge to
the top edge.
TWO WARPED SPARS INSTALLED
THIS WAY WILL RESULT IN A
STRAIGHT WING
TWO WARPED SPARS INSTALLED
THIS WAY WILL RESULT IN A
WARPED WING
D 3. Match the 1/4" x 3/8" x 36" balsa wing spars so any
warps will counteract each other.
D 5. Glue the three die-cut 3/32" balsa #1 ribs onto the
bottom spar and trailing edge, perpendicular to the building
board. Important: Make sure that the 1/4" square holes for
the servo mounting rails are facing up as shown and that
the ribs are centered on the forward edge of the trailing edge.
D 6. Glue the die-cut 1/8" ply leading edge doubler,
centered, on the front of the #1 ribs.
D 7. Cut two 7-7/8" long servo mounting rails from the
1/4" x 1/4" x 15" hardwood stick. Save the left-over pieces
for later use. Slide a servo mounting rail through the front
and back square holes as shown and glue them securely
into position.
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