Great Planes Learjet 40 Kit - GPMA0439 - Manual (Page 10)

D 11. Cut a small piece of 3/8" scrap balsa stick to fit
between the top of the dorsal fin and the vertical fin. Shape
and sand this piece to match the plan. Use balsa filler
(HCAR3104).
D 3. Sand the completed framework smooth, then glue
1/16" x 3" balsa sheeting to the top surface.
D 4. Remove the stab from the board. Sand the bottom
side smooth, then sheet it with 1/16" x 3" balsa. Trim the
perimeter to the shape shown on the plan and sand the
assembly smooth. Sand the leading edge and tips round to
match the cross section on the plan but leave the TE flat.
Stabilizer & Elevators
D 5. Cut both ends of each shaped balsa elevator to the
angle shown on the plan, then cut a 1" piece from each
one. Glue these short pieces to the TE of the stab at the
tips, and sand to shape.
D 1. Put the stab plan on your building board and cover it
with waxed paper. Pin the 1/4" shaped balsa stab center
front over the plan, then glue the 1/4" x 3" x 4-1/4" balsa
stab center to its aft edge. Cut the stab center (TE) from a
1/4" x 1/2" balsa stick to match the shape shown on the plan.
D 2. Assemble the stab frame from 1/4" x 1/2" balsa sticks,
then cut and glue the 1/8" x 1/4" balsa trussing in position.
D 6. Sand a "V" on the LE of the elevators and trim the
inner ends to match the plan. Temporarily attach the
elevators to the stab with masking tape.
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