Dynaflite GPMA0090 Butterfly - Manual (Page 22)

22
Sheet the Fuse Bottom
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1. Mark the location of the landing gear rails on
the bottom edges of the fuse sides and the triangle
fuse side stringers as shown in the photo. Remove
the portion of triangle stringers on both fuselage
sides between the lines you marked.
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2. Position the landing gear rails between the
fuselage sides and align them with the landing gear
holes as shown on the plan. Glue the landing gear
rails in position with medium CA.
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3. Sand the bottom of the fuselage with your
bar sander and 150-grit sandpaper so the formers,
triangle side stringers and the landing gear rails
are even.
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4. Bevel the one end of the 1/16" x 3" x 12"
plywood forward fuselage bottom so it matches
the right thrust angle of the fi rewall, then glue it to
the bottom of the fuselage with medium or thick CA.
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5. Cut the cross-grain bottom fuselage sheeting
from the 1/16" x 2" x 36" balsa sheet, then glue the
individual planks in position with medium CA. Use
your builders triangle to keep the fuselage sides
perpendicular as you proceed.
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6. Remove as many T-pins as possible, then
carefully lift the fuselage off your building board
and remove the remaining T-pins.
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7. Sand the ply and balsa fuselage bottom even
with the fuse sides.
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8. Use a metal fi le or a powered hand tool with
a cut-off wheel to remove any burrs and chamfer
the ends of both 5/32"
landing gear wires .
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9. Fit one of the landing gear wires through the
hole in the right fuselage side and hold it in position
as shown on the plan. Position the landing gear
wire as accurately as you can so it has the same
amount of forward “rake” as shown on the plan.
Place the
aft landing gear bearing inside the
right fuselage side next to the wire as shown on
the plan. Use thin CA to glue the aft landing gear
bearing to the fuselage side.
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10. Position the forward landing gear bearing
on the right fuselage side next to the landing gear
wire and glue it in position with thin CA.
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11. Insert the other landing gear wire in the
fuselage and position it so it matches the angle
of the left wire. Glue the forward and aft landing
gear bearings to the left fuselage side the same
way you did for the right side.
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12. Remove the landing gear wires. You will
permanently install the landing gear after you cover
the model.
Finish the Fuselage
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1. Use the remaining balsa triangle stock to
reinforce formers F-6 and F-7 where shown on
the plan.