Great Planes Ultimate Biplane 40 Kit - GPMA0240 - Manual (Page 22)

D 18. Use 6-minute epoxy to glue the fuel tank floor,
fuelproofed side down, into the notches in the lower fuse
doubler. After the epoxy has cured, fuelproof the top of the
tank floor.
D 22. Glue a piece of 1/8" x 1/4" balsa stick under the
forward edge of the bottom deck.
D 23. Use 30-minute epoxy to glue the shaped 1/4"
plywood wing bolt plate to the fuse sides, lower fuse
doublers and former F-10.
D 19. Glue the shaped balsa tapered tail wedge in
position where the aft fuse sides meet.
D 20. Carefully sand the outside of the plastic outer guide
tubes with coarse sandpaper so the glue will adhere better.
Install the guide tubes through the slots in the aft fuse sides.
The guide tubes pass through former F-11 and cross each
other before passing through former F-10. Approximately 7"
of the guide tube should protrude past F-10. D 1. With the fuselage upside-down in a foam cradle, fit
the wing in the wing saddle. The wing dowel should slide
easily into the slot in F-8A/B. Carefully sand the wing
saddle to eliminate any gaps between the wing and fuse.
D 21. Glue the guide tubes to the formers with medium
CA. Glue the guide tubes to the exit slots with a 50/50
mixture of microballoons and epoxy. Completely fill the
slots with the mixture. After the epoxy cures, cut off the
excess guide tube and sand the tube and epoxy flush with
the fuse sides. Save the excess guide tube for use later.
Note: Talcum powder may be substituted for microballoons.
D 2. Visually center the wing on the fuselage. Check that
the wing tips measure the same distance from the center of
the tail and tape the wing in position.
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