Dynaflite DYFA2016 - Manual (Page 14)

LJ 14. Make two fin tip fillers from leftover 1/16"
balsa sheeting. Glue them to the trailing edge of the
fin so there is 1/16" clearance between the fillers
and the top of the rudder (if you have built a
non-functioning rudder, the fillers should extend all
the way to the rudder tip). Make the fillers oversize
so you can sand them to exact shape after you glue
them in position.
U 15. Sand fillers so they are even with the fop of
the fin and the TE of the rudder.
Q 1. Position the stabilizer portion of the plan over
your building board. Cover it with wax paper.
Refer to fhis photo while you are building the stab.
Q 2. Use the remainder of the 3/16" x 1/4" x 24"
balsa stick you used for the rudder and two
additional 3/16" x 1/4" x 24" balsa sticks to build
the stab framework. Cut the pieces to the correct
length. Pin them in their location over the plan and
glue them together with medium CA.
Q 3. Use a hobby knife and a straightedge to bevel
one end of the 3/16" x 1-3/8" x 3-3/4" balsa
sheet to make the stab center. Glue it to the stab LE
and TE with medium CA in the location shown on
the plan.
Q 4. Cut the stab ribs from a 1 /16" x 3/16" x 24"
balsa strip. Glue them in position with medium CA.
Q 5. Remove the T-pins. Lift the stab from the plan
and peel off the wax paper. Lightly sand the stab to
remove any glue bumps and high spots. With such a
lightweight structure it is necessary to even only the
high spots, so don't weaken the structure by sanding
too much.
Q 6. Use the remainder of the 3/16" x 1-3/8"
balsa sheet you used for the fin tip and rudder base
to make the elevator. Mark the location of the
hinges. Cut the hinge slots and bevel the leading
edge to a "V" as shown on the cross section. Taper
the elevator toward the trailing edge to a thickness
of 3/32" or just round-off the trailing edge.
U 7. Test fit the elevator to the stab with four more
hinges cut to the size shown on the plan from the
hinge strip. If necessary, adjust the width and
position of the hinge slots so they align.
U 8. Starting with your bar sander, round the
leading edge and tips of the stab as shown on the
plan. Finish by hand-sanding with progressively
finer grits of sandpaper. Blend the ends of the
elevator to the stab tips for a finished appearance.
L-l 9. Separate the elevator from the stab and
remove the hinges from the stab. Mark a vertical
centerline on the both sides of the stab.
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