Great Planes PT-60 Kit - GPMA0119 - Manual (Page 36)

D 2. With the wing attached to the fuselage and an empty
fuel tank, lift the model at the balance point. If the tail drops
when you lift, the model is "tail heavy" and you must move
weight toward the nose to balance. If the nose drops, it's
"nose heavy" and you must move weight toward the tail
to balance.
Balance the model by changing the position of the
servo tray, receiver battery, and receiver, then re-
testing. When balance is obtained, securely glue the
servo tray to the fuse doublers. Cut off the rudder and
elevator pushrod tubes 2" - 3" short of reaching the servos.
Note the location of the battery and receiver for permanent
installation later in the finishing process.
IMPORTANT: After the model is 100% complete,
recheck the balance. Move the battery, if needed, to
balance the model before flight.
D 1. Center the elevator, then mark the pushrod where it
crosses the enlarged servo horn hole.
channel 1). This way you will develop the feel for flying as
you would with ailerons, using the right-hand control stick
for most of your control.
D 4. Insert the nose wheel steering pushrod into the
screw lock pushrod connector, then center the nose wheel.
Install and tighten down the socket head screw and test the
steering. When the rudder moves to the right, the nose
wheel should also move to the right. Make sure the nose
gear steering arm does not bind against the firewall when
the rudder stick is pushed fully to the left.
D 2. Make a 90-degree bend in the pushrod on your mark,
then insert it through the enlarged hole. Secure it in place
with a nylon Faslink as shown in the sketch. Cut off any
excess wire 1/8" above the Faslink. Caution: Wear safety
glasses whenever you cut wire!
D 3. Repeat steps 1 and 2 for the rudder. NOTE: If you
will only be using three channels, plug the rudder servo
into the aileron socket in your receiver (usually
D 5. Pull the throttle control stick and trim lever on your
transmitter to the fully "back" or closed position. Hook up
the throttle using the pushrod you made earlier. Insert the
pushrod through the screw lock pushrod connector, then
install the horn on the servo so that it points toward the tail
of the model at about a 30-degree angle as shown. Don't
install the locking screw yet.
D 6. Pull the throttle pushrod toward the tail to fully close
the throttle. Install the locking screw in the connector,
tightening it slightly. Move the throttle trim lever and watch
the carburetor to see if it opens slightly. If the servo does not
move (just sits there buzzing), you need to flip the "Servo
Reversing Switch" on your transmitter. If it works properly,
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