Dynaflite DYFA2016 - Manual (Page 15)

Some modelers prefer to glue the stab to the fin
after they cover them with MonoKote® film. If this
is your preference, perform the following steps but
use T-pins to temporarily hold the stab to the fin
instead of permanently gluing it in position.
Continue building, skipping the rest of the steps
that can't be done without the stab joined to the
fin. Cover the fin, fuse and stab with MonoKote
film after the parts have been final sanded. Leave
the balsa exposed on the center of the bottom of
the stab where it will contact the fin and the
triangle stab reinforcements. Return to this part of
the manual and glue the stab to the fin. Perform
the steps that you skipped.
Q 1. Drill two 3/32" vertical holes through the
centerline on the stab at the locations shown on
the plan.
U 2. Use a straightedge to draw a centerline on top
of the fin. Place the stab on top of the fin as shown
on the plan. Align the centerlines on the stab with
the leading and trailing edges of the fin and align
the holes in the stab with the centerline on the fin.
Q 4. Remove the stab. Drill 3/32" holes in the top
of the fin (or use your sharpened 3/32" brass tube
to make the holes). Cut two 1" pieces from the
3/32" dowel. Test fit the stab to the fin with the
dowels. Remove the stab and the dowels.
Q 5. Temporarily reattach the elevator to the stab
with the hinges.
LJ 6. Spread a film of 30-minute epoxy on top of
the fin and the bottom of the stab and pack the holes
in the fin with epoxy. Glue the stab to the fin with the
dowels using a 90 degree triangle to make sure the
stab is perpendicular to the fin. Hold the stab in
position with small T-pins and wipe away excess
epoxy with a tissue. Do not disturb the model until
the epoxy has fully cured.
LJ 7. Trim the dowels so they are nearly flush with
the top of the stab. Sand them flush with your bar
sander and 220-grit sandpaper.
U 3. Use the holes in the stab as a "template" to
mark the location of the holes on top of the fin with a
3/32" brass tube sharpened at one end, a ballpoint
pen or a pencil or the 3/32" dowel sharpened to a
point at one end.
Q 8. From the 1/4" x 12" triangle stick, cut two
3-1/4" pieces to reinforce the glue joint between
the fin and the stab. Bevel the ends of the stab
reinforcements for a finished appearance.
Note: The plan shows a 1/4" x 3/16" stick in this
area, but 1 /4" triangle stock is just as strong and
provides a more finished appearance.
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