Great Planes PT-60 Kit - GPMA0119 - Manual (Page 37)

open the throttle all the way with the main control stick. If the
throttle opens all the way but the pushrod bends (or the
servo buzzes), move the connector toward the center of the
servo horn to decrease the amount of throw. When the
throttle works properly, install the retainer on the bottom of
the connector post to secure it in position. Tighten the
connector screw, and install the servo horn screw.
D 7. Wrap your receiver with 1/4" thick foam rubber.
Secure the foam with a couple of rubber bands. The foam
rubber acts as a shock and vibration absorber. Position the
receiver where it was when you balanced the model, then
glue a scrap of ply over the top of it to hold it in position.
Follow the same procedure to mount the battery.
D 8. Route the receiver antenna through the antenna
tube along the bottom of the fuse. If there is excess
antenna length, it should exit the back end of the fuselage
and trail behind.
D 10. Drill two 5/64" holes in a large round servo horn as
shown on the wing plan for use with the ailerons. The odd
placement of the holes will cause the ailerons to have
"differential" travel. This means that they won't move down
as much as up—an aid to making smooth turns. Take a
minute to read the explanations of "Adverse Yaw" and
"Differential Throw" on pages 44 and 45.
D 11. Screw a 6" threaded pushrod 14 revolutions into a
nylon swivel clevis. Screw a nylon swivel onto one of the
aileron torque rods so that the centerline of the swivel is
3/4" from the surface of the wing. Snap the swivel clevis
onto the swivel. Repeat this operation for the other
torque rod.
D 12. Plug the aileron servo into your receiver, then center
it and the round servo horn as you have done with the
other controls.
Great Planes switch/charging jack mount (GPMM1000).
(Not included.)
D 9. Mount the receiver switch and charging jack through
the fuselage on the opposite side of the fuse from the
muffler exhaust. We suggest using a Great Planes
switch/charging jack mount (GPMM1000) because of its
ease of installation and tidy appearance.
NOTE: If you w i l l be only using 3 channels without
functional ailerons, skip ahead to step 15.
D 13. Center the ailerons, then mark both pushrods
directly over their respective holes in the servo horn.
Remove the pushrods by unsnapping the clevises. Use the
following sequence of photos to make a Z-bend in each
pushrod or use a Z-bend pliers.
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