Great Planes F4 Phantom - GPMA0440 - Manual (Page 24)

1. Glue the die-cut 1/8" ply firewall former F-1B to the
back of F-1A. Make sure that the embossed label on each
former is facing forward and the edges are aligned. Wipe
off any excess epoxy before it cures.
Note: If the formers are warped, clamping them together
will not remove the warp. It is best to clamp them to a flat
table or board.
2. Glue the die-cut 1/8" ply F-3 ring doublers to the
front of the die-cut 1/8" ply former F-3. Make sure the holes
in F-3 and the ring doublers are aligned.
3. The four die-cut 1/8" ply wing mounting plates are
cut with the grain running in opposite directions. Make two
1/4" thick plates by gluing together two plates with the grain
running in the opposite direction.
4. Glue the die-cut 1/8" ply retract plate doubler (RFD)
to the bottom (side opposite the embossed lettering) of the
die-cut 1/8" ply retract plate (RF).
5. Drill a 1/16" hole at each punch mark on the die-cut
1/8" plywood firewall F-1C and F-1A. Draw centerlines
connecting the punch marks on both sides of F-1C and
F-1A/B. Apply 30-minute epoxy to the front of F-1C and
clamp it to the back of F-1 B, aligning the centerlines.
6. After the epoxy has cured, drill 5/32" holes at the four
engine mount punch marks. If you will be using an engine
mount other than the Great Planes engine mount, use the
centerlines to align your engine mount on the firewall. Drill
5/32" holes at the appropriate locations.
7. Press four 6-32 blind nuts into the holes from the
back of the firewall. Tap the blind nuts with a hammer to
fully seat them. Apply a few drops of thin CA around each
blind nut to secure them in position. Avoid getting CAon the
threads of the blind nuts.
1. Build two fuselage sides by gluing together the
1/8" x 1-1/2" x 11-7/16" balsa lower forward fuse side, the
1/8" x 1-1/2" x 9-1/8" balsa lower aft fuse side, the die-cut
1/8" balsa upper forward and the upper aft fuse sides.
2. Sand the fuse sides smooth.
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