Great Planes Super Decathlon 40 Kit - GPMA0185 - Manual (Page 20)

IMPORTANT NOTE: When performing steps 16-18,
it is possible that adding the triangles may have pulled the
aft portion of the fuse out of alignment slightly. Check
for this by positioning the fuse on the plan. If this is the
case. relieve the stresses caused by the triangles by
making razor saw cuts in the triangles until the fuse
straightens out. After doing so, apply thin CA to the saw
cuts. and glue them to the top of F-1. The front of F-1T must line
up with the front of F-1.
D 2. Glue the die-cut 1/8" ply DASH in place in the
notches in the fuse side doublers.
D 3. Glue the 3/16" x 3/16" x 3-1/4" balsa top front
stringer into the notches in F-1T and the DASH. Sand the
front and rear ends of the stringer flush with the formers.
D 18. From the 3/32" x 3" x 32" balsa sheet, cut and glue
pieces of cross-grain sheeting to the bottom of the fuse,
beginning at the front of F-2C and running to the aft end of the
fuse. NOTE: While applying sheeting to that portion of the
fuse aft of F-7, temporarily pin the tapered balsa tail filler in
place to maintain the proper separation of the fuse sides at the
aft end.
D 19. Sand the edges of the bottom sheeting at a 45-degree
angle to blend with the triangle stock, as shown on the former
cross-sections on the plan. (This results in a shape that is
reasonably close to the full-size Super Decathlon fuselage).
D 4. Cut the 1/16" x 3" x 8" balsa sheetin half to make two
pieces 4" long. Using the same technique you used to apply
the bottom front sheeting, glue the 1/16" top front sheeting
to F-1T and the DASH. Sand the sheeting flush with the
formers. Sand the fuse sides to a rounded shape to blend with
the sheeting (See the cross-section drawing of F-l on the
plan).
ASSEMBLE UPPER FUSELAGE
NOTE: You may now fuelproofthe inside of the fuel
tank compartment and the front of F-l by brushing on a
coat of polyester resin or 30-minute epoxy thinned with
alcohol. You may wait until it is time to install the fuel
tank, but it is easier to do so at this time.
D 1. Glue the two die-cut 1/8" ply F-1T formers together,
D 5. Glue F-2T to the front of F-2.
Glue F-4T to the front of F-4.
Glue F-5T to the front of F-5.
Glue F-6T to the front of F-6.
D 6. Draw a line on F-7T, 1/4" up from the bottom edge.
Then glue F-7T to the front of F-7, aligning the line with the
top edge of F-7. Install this former accurately!
D 7. Find the die-cut 1/8" ply wing saddle doublers.
Carefully position them on the cabin sides, aligning the top
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