Great Planes Piper J-3 ElectriCub Park Flyer ARF - GPMA1153 - Manual (Page 9)

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1. Center and align the LE of the horizontal stab with the
centerline of the fuse. Pin the front center of the stab to the
centerline of the fuse.
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2. Locate the center stringer running the length of the fuse
on the top. This is the centerline of the fuse. Attach one end of
a piece of string to the centerline using a T-pin or piece of
masking tape, just behind the wing saddle, and extend the
string to the left outer edge of the stabilizer. Mark the string at
that location on a piece of tape. Move the end of the string to
the other side of the stab. Rotate the stab until both lengths are
the same. Pin the TE of the stab to the fuse.
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3. Using a fine point felt-tip pen, mark the covering on the
bottom of the stab where it contacts the fuse.
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4. Remove the stab. Cut the covering from the marked
area of the stab and from the gap on the front of the stab.
Note: Be careful not to cut into the balsa stab when
removing the covering.
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5. Mount the wing to the fuse with two of the rubber
bands included with this kit. Pin the stab to the fuse; check
from behind the aircraft to make sure the stab is parallel with
the wing. Lift the stab off, and coat the stab where the
covering was removed and the fuselage with 30-min epoxy.
Reinstall the stab with the pin for guidance.
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6. Center the fin on the stab and align it with the center of the
fuse. The front of the fin will slide into a notch in the front of the
horizontal stab. Mark the stab on both sides of the base of the
fin. Remove the covering from the marked area of the top of the
stab and the bottom of the fin. Note: Be careful not to cut into
the balsa stab when removing the covering.
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7. Using 30-min epoxy, glue the fin to the stab, making
sure to keep it aligned with the centerline of the fuse and
perpendicular to the stab until the glue is fully cured.
Assemble the Tail
9