Great Planes P-51D Mustang 40 Kit - GPMA0175 - Manual (Page 35)

*NOTE: Because these parts are used to construct a
section that is cosmetic only, they arc made as lightweight
as possible; therefore, they will be fragile until they arc
all glued together as an assembly. Handle with care! If
you are planning to fiberglass and paint the fuselage and
air scoop (not recommended, due to the potential for
excess weight buildup), do not punch out the lightening
holes in the scoop sides. Instead, glue them in permanently.
D 1. Mount the wing onto the fuselage and secure with
the nylon bolts.
D 2. Take measurements from the fuselage plan side
view and mark the locations of F-3B and F-3C on the bottom
of the wing.
D 3. Trial fit F-4A onto the wing, sanding as necessary
for a good fit. Glue F-4A to the wing, spacing it approxi-
mately 1/32" from F-4B (use a 1/32" plywood scrap as a
spacer).
D 4. Trial fit and glue F-3C to the wing, roughly perpen-
dicular to the wing surface.
D 5. Trial fit and glue F-3B to the wing, using the front
edge of the Scoop Side as a guide for setting the angle of
F-3B.
NOTE: It is recommended that you leave the wing
attached to the fuse during the next step to avoid changing
the angle of F-4A when gluing the stringers to the
formers.
U 6. From the remaining 1/4" x 1/4" balsa stick, cut three
stringers to run from the front of F-3B to the aft edge of F-4A.
Make saw cuts in the stringers as required for ease of bending.
Glue these stringers in place, and sand off the ends flush with
the formers. Also sand the edges of the stringers to blend with
the formers.
NOW you may remove the wing from the fuse.
D 7. Sand the scoop sides for a good fit onto the wing, and
glue them to the wing and to formers F-3B, F-3C and F-4A.
Sand the edges of the scoop sides even with the edges of the
formers.
D 8. If you had to make saw cuts in the stringers (step 6),
you should now place a drop of thin CA on each saw cut.
D 9. From the remaining 3/32" x 3" sheeting, cut pieces
of cross-grain sheeting and glue to the bottom of the scoop.
Provide holes in the bottom scoop sheeting for screwdriver
access to the wing bolts.
D 10. Sand this scoop to blend with that portion aft of the
wing.
INSTALL WING FILLETS (OPTIONAL)
NOTE: The wing fillets are a nice addition to the P-51 D.
They make it more realistic and they do help to reduce
drag. The P-51 D flies just fine without them, however,
so the choice is yours whether or not to install them.
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