Great Planes PT-E Trainer Electric Kit - GPMA0110 - Manual (Page 18)

D 2 Use an Xacto knife to separate the nylon screw
backplates from the nylon horns.
D 3. Lay the rudder on the fuselage plan side view and
determine where the nylon control horn should be
located Holding one of the nylon horns in place on
the left side of the rudder, use a pencil to mark
through both holes in the horn
D 4. Remove the rudder from the fin, and remove the
hinges.
D 5. Start pilot holes with a pin at the marked locations,
then drill the holes with a 3/32" drill
D 6. Harden the balsa in the control horn area by
putting a drop of thin CA into each hole After the
glue has set, re-drill the holes and sand the surface
smooth.
D 7. Insert two 2-56 screws through the nylon horn
and through the holes you drilled Then screw them
into the nylon nutplate which originally came at-
tached to the horn Tighten the screws until they
are snug, but do not crush the wood by over-
tightening.
D 8. Repeat the above process to install the nylon con-
trol horns on the elevator. NOTE: When marking
the locations for drilling, you must hold the
nylon horn on the BOTTOM of the elevator!
INSTALL SERVOS
NOTE The following instructions and photos describe how
to install Futaba S-48 servos in your PT-Electnc If your
radio equipment is different from that shown in the photos,
you may have to use a slightly different method to mount
your servos properly Be sure to read the instruction
manual for your radio before beginning this section.
If you have difficulty with the radio installation, ask an
experienced model builder for assistance
Special Note: Most radio systems sold today have "servo
reversing switches" on the transmitter, which enable the
modeler to install the servos without first checking to
determine which direction the servos rotate After the in-
stallation has been completed, the modeler merely flips
the switches on the transmitter to make the servos rotate
in the desired direction Many of the older systems, how-
ever, do not have servo reversing instead they include
one or two "reverse" or "left-handed" servos which rotate
in a direction opposite that of the other servos When instal-
ling the servos of a system that does not have servo revers-
ing, you must plan ahead to use the "reverse" servos
where they are needed.
D 1 Prepare the servos by installing the four rubber
grommets into each servo, then inserting the brass
eyelets up into the grommets.
D 2 Place the servos into the die-cut 1/8" plywood
servo tray provided, and position them so they are
not touching the sides of the openings Note: If you
have only two servos, they will be used for elevator
and rudder control only (no servo-activated on-off
switching)
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