Dynaflite GPMA0090 Butterfly - Manual (Page 27)

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3. Accurately mark the center of the fuselage
top where the LE of the stab contacts the top
sheeting. Position the stab on the fuselage and
align the centerline you marked on the stab with
the mark on the fuse top. Pin
only the LE of the
stab to the fuse.
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4. Insert a T-pin
into the center
of the top of the
fuselage just behind
the firewall (use
the ver tical line
you marked on the
center of the fi rewall as a reference).
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5. Fold a piece of masking tape around a 36"
long piece of string, then mark an arrow on the
tape with a felt-tip pen. Tie the other end of the
string around the T-pin you inserted in the front of
the fuselage in the previous step. Slide the tape
along the string and adjust the stab until the arrow
aligns with both stab tips as shown in the bottom
photo. Pin the rear of the stab to the fuselage.
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6. Carefully turn the fuselage over and mark the
outline of the fuselage sides on the bottom of the
stab. This line indicates where you should apply
the covering “up to” and apply glue when it is time
to glue the stab to the fuse.
Align the Fin
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1. Accurately mark the center of the fuselage
top near the rear “window.”
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2. Use a straightedge to lightly draw a line
connecting the centerlines of the fuse top.
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3. Position the fi n on the centerline of the stab,
then pin it in position. Placed wax paper on the aft
fuse top in front of the stab where the dorsal fi n
will be located.
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4. Make the two pieces of the dorsal fi n from
remaining 1/4" x 1/4" balsa, then glue them only
to the fi n with medium CA.