Great Planes PT-E Trainer Electric Kit - GPMA0110 - Manual (Page 23)

D 2. Set the fin in place on the stab to check the fit
and alignment. If the fin TE does not match the fuse
tail post, you may sand a little off the lower front
corner of the fin LE to permit the fin to slide forward
until it contacts the tail post. Also, with the fin rest-
ing down on the stab, the bottom of the fin and rudder
must not protrude below the bottom of the fuse. If
they do, sand them off.
IMPORTANT NOTE: Improper fin alignment is one of
the most common causes of poor flying airplanes. The fin
absolutely must line up with the centerline of the
airplane! Therefore, use care in the following steps to
mount the fin properly.
MAKE THE PUSHRODS
D 1. You'll need the two 1/4" x 1/4" x 12-1/2" balsa
sticks, two 12" steel rods threaded on one end, two
nylon clevises and some strong thread (not in-
cluded).
STEEL PUSHROD WIRE
D 2. Clean the oily residue off the pushrod wires using
a tissue dampened with alcohol or degreaser.
NYLON CLEVIS
D 3. Draw a line 1-inch long on each end of both 1/4"
x 1/4" sticks as shown in the photo.
D 3. Remember the mark you made in the center of
F-3? Now measure 3/32" left and right of that mark
and make two more reference marks. Now lay a
straightedge along the left side of the fin, with one
end of the straightedge on the left mark on F-3. Ad-
just the position of the fin until it matches the
straightedge.
D 4. Holding the fin in this position, draw lines on the
stab center on both sides of the fin for future refer-
ence. Double check this by laying the straightedge
along the right side of the fin and holding it on the
right mark on F- 3.
D 4. Use the threaded end of one of the wire pushrods
to "file" grooves in the balsa sticks where you drew
the lines. The depth of the grooves should be about
1/2 the thickness of the wire.
DO NOT glue the fin to the stab at this time! D 5. Drill 5/64" holes through the sticks at the end of
the grooves you made in the above step.
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