Great Planes Super Decathlon 40 Kit - GPMA0185 - Manual (Page 19)

fit between the fuse sides. Use 30-minute or 5-minute epoxy
to securely glue F-l to the fuse sides, holding with clamps or
tape until the glue has firmly set. NOTE: Before the glue
sets, double check to make sure F-l is properly aligned with
the top edge of the fuselage, and fully back against the fuse
doublers. After the glue has fully hardened, sand off the front
of the fuse sides flush with the front of F-l.
D 10. Glue the die-cut 1/8" ply F-1B, F.2B, F-2C, F-3B,
and the 1/4" ply main landing gear mounting plate to the
fuse bottom. NOTE: F-1B should line up with the front of
F-l, and you should use epoxy for the L.G. plate.
D 11. Glue the die-cut 1/8" balsa center stringer between
F-1B and F-2B, along the centerline of the fuselage.
outside edge of the bottom of the fuse sides. Add small pieces
of scrap balsa in the front corners (at F-2C) as shown in the
photo.
D 14. Using a sanding block, sand the 3/4" triangles on a
Straight line from F-2C to F-3B.
D 12. Find the 3/32" x 3" x 9" balsa sheet and cut it in half
to make two 4-1/2" lengths. Glue one edge of one of these
sheets to the bottom edge of the fuse side, beginning at the
rear edge of F-2B and extending past F-1B. Wet the sheeting
thoroughly with warm water or alcohol in the area to be bent,
then bend the sheeting over the formers and glue it down.
Trim the sheeting at the centerline of the center stringer.
Repeat this process for the other side. Trim and sand the
sheeting flush with the front of F-1B and the rear of F-2B.
D 13. From the 3/4" x 9-3/4" balsa triangle stock, cut two
pieces to fit between F-2C and F-3B, and glue them along the
D 15. Cut one of the 1/2" x 36" balsa triangles in half to
make two 18" lengths. Glue these triangles along the outside
edge of the bottom of the fuse sides between F-3B and F-7.
D 16. Find the two die-cut 1/8" balsa stringers that fit
between F-3B and F-4, and glue them to the inside edge of the
1/2" balsa triangles, just behind F-3B.
D 17. Using a long sanding block with 50 or 80-grit sand-
paper, sand the above triangles and stringers to taper on a
straight line from F-3B to F-7 as shown on the fuse plan side
view. In other words, you will sand off almost nothing at
F-3B, and almost all of the triangle at F-7.
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