Build The Fin; Build The Elevators; Build The Stabilizer; Install The Hinges - GREAT PLANES Super Sportster 90 Instruction Book

13. Use your T-bar sander to sand the leading
edge of the rudder to a "V" shape (take a look
at the top view of the rudder on the plan to
determine the proper angle of the "V")
D 14 Sand all other edges of the rudder to a
round shape NOTE The centerline you previ-
ously drew will help you to sand the same
amount from both sides.

BUILD THE FIN

You'll need the following parts:
1/4" x 2-7/8" x 1-1/2" shaped balsa front fin
filler
1/4" x 3" x 1-1/2" balsa rear fin filler
1/4" x 3/4" balsa sticks
1/8" x 1/4" balsa sticks
1/16" x 3" balsa sheets
D 1. In the same manner as the rudder, build the
inner framework, including the 1/4" fin filler
sheets, the 1/4" x 3/4" sticks and the 1/8" x 1/4"
sticks (for ribs).
D 2. Sand the top front comer to the shape as
shown on the plan.
D 3. Glue 1/16" balsa sheeting to both sides (ver-
tical grain).
D 4. Sand the leading edge (only) to a round
shape.
NOTE: The trailing edge, bottom edge and lower
front edge must not be rounded or V-shaped, instead,
just sand these edges flat.

BUILD THE ELEVATORS

You'll need the following parts:
4 1/8" die-cut ply elevator filler (E F) pieces
1/4" x 3/4" balsa sticks
1/8" x 1/4" balsa sticks
1/16" x 3" balsa sheets
D 1. Tape waxed paper over the separate elevator
drawing on the fuse plan Glue the two EF
pieces together, then in the same manner as
the rudder, build the inner framework. Build
two identical elevators.
D 2. Sand the framework to the shape as shown
on the plan.
D 3. Glue 1/16" balsa sheeting to both sides of
the elevators, with the grain running the long
way.
D 4 Sand the leading edge to a "V'-shape, and
the other edges to a round shape.

BUILD THE STABILIZER

You'll need the following parts:
1/4" x 3/4" balsa sticks
1/8" x 1/4" balsa sticks
1/16" x 3" balsa sheets
Shaped 1/4" ply front stab brace
1/4" x 1/2" x 6" ply rear stab brace
1/4" x 3-7/32" x 3" balsa stab center sheet
D 1. Tape waxed paper over the separate
stabilizer'drawing on the fuse plan In the same
manner as the rudder, build the inner
framework, including the front stab brace, rear
stab brace, 1/4" balsa center sheet, 1/4" x 3/4"
sticks and 1/8" x 1/4" sticks.
D 2. Sand the outside edges to the shape as shown
on the plan.
D 3. Glue 1/16" balsa sheeting to both sides, with
the grain running the long way.
D 4. Sand the leading edge and the ends to a
round shape.
NOTE- The trailing edge must not be rounded or
V-shaped. Instead, just sand this edge flat
INSTALL THE HINGES (Do Not Glue)
NOTE: The large one-piece molded hinges supplied
in this kit are strong, easy to install, and provide a
good dampening effect to help prevent dangerous
control surface flutter We recommend that you use
these hinges in your Super Sportster 90/120.
D 1 Lay the rudder and elevators on the plan
and mark the hinge locations Place the rudder
against the fin TE (trailing edge) and transfer
the marks over to the fin. Place the elevators
against the stab TE and transfer the marks
over to the stab.