indicating the trailing edge of the stab. Mark the center of
the trailing edge of the stab. Using the mark as a reference,
center the stab laterally on the fuse. View the model from
above. Align the trailing edge of the stab so it is parallel with
the straightedge on the plan. Now you know how to center
the stab.
❏
4. Glue the stab to the fuse with 30-minute epoxy. Be certain
the trailing edge of the stab is 1/8" [3.2mm] ahead of the aft end
of the fuse to accommodate the elevator joiner. Be certain the
fuse and the straightedge remain aligned on the plan. Align the
trailing edge of the stab with the straightedge. Wipe away
excess epoxy, then recheck alignment.
Note:
CA could be used to glue the stab to the fuse, but
epoxy is recommended to provide working time for
accurate alignment.
❏
5. Temporarily place a 1/8" x 1/8" x 24" [3.2 x 3.2mm] stringer
in the top, middle notch of the formers. Position the fin on the
stab and fuse. Align the trailing edge of the fin with the aft end
of the fuselage. Center the leading edge of the fin on the stringer
in the top of the formers. Holding the fin in position, use a small
builder’s square to make certain it is perpendicular to the stab.
When the fin is in alignment, glue it into position with CA.
❏
1. Cut the stringers that extend from F4T to the leading
and trailing edges of the fin from 1/8" x 1/8" x 24" [3.2 x 3.2
x 610mm] balsa sticks. Cut an angle at the aft end of the
stringers where they contact the trailing edge of the fin. Glue
the stringers into position.
❏
2. Cut the 1/8" x 1/8" stringers used for bonding the covering
(indicated by the arrows in the photo) to both sides of the fin
and the top of the stab. Glue the stringers into position.
❏
3.
Glue both laser-cut 1/16" [1.6mm] plywood
dowel
doublers
to the inside of the fuse sides around the forward
dowel. This can be most accurately done with the dowels in
position, but do not inadvertently glue the dowels in.
❏
4. Glue a strip of leftover 1/16" [1.6mm] plywood to the
back of the firewall centered over the top mark for the motor
mount screw. Drill a 1/16" [1.6mm] hole through the firewall
and the piece of plywood at the mark.
❏
5. Use the remaining 1/8" x 1/8" x 24" [3.2 x 3.2 x 610mm]
balsa sticks to make the stringers for the top of the fuse that
Finish the Fuse
16
