Great Planes Super Stearman 1.20 ARF - GPMA1350 - Manual (Page 28)

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1. Cut the covering from the pushrod tube openings at the
rear of the fuselage. There are two located on the right side
and one located on the left. If you have trouble finding the
openings, slide a .074" x 36" [1.9 x 915mm] pushrod wire
into the tubes from inside of the fuselage, sliding it into the
tube until it pushes the covering away from the fuselage
slightly. This is where you should cut the covering away from
the tubes.
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2. Locate three .074" x 36" [1.9 x 915mm] pushrod wires
threaded on one end. Thread a nylon clevis onto the
threaded end of each wire 20 full turns. Install a silicone
clevis keeper onto the clevis.
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3. On the right side of the fuselage, slide one wire into the
opening closest to the back of the fuselage. Install a nylon
control horn onto the clevis. Position the control horn on the
rudder, positioning it the same way you did with the ailerons.
Mark the location for the screw holes. Drill through the
marks you made with a 1/16" [1.6mm] drill bit, drilling only
into the plywood plate. Do not drill through the rudder!
Install and then remove two 2-56 x 5/8" [16mm] machine
screws. Apply a couple drops of thin CA into the holes. Once
the glue has cured, mount the horn and the nylon mounting
plate to the rudder with the screws.
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4. Install the two elevator pushrods using the same
procedure used for the rudder. Be sure when installing the
control horn on the right elevator that you install it so it does
not conflict with the rudder control horn.
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5. Place your rudder servo into the servo tray as shown,
positioning the last hole of the servo arm over the pushrod
wire. Drill a 1/16" [1.6mm] hole through each of the
mounting holes. Remove the servo, then install and remove
a servo mounting screw into each hole. Apply a couple
drops of thin CA into the holes to harden the threads. When
the glue has cured, permanently mount the servo to the
servo tray.
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6. Center the rudder and the rudder servo, then install the
servo arm. At the point the pushrod wire intersects the last
hole in the servo arm make a mark. Bend the wire 90
degrees on that mark. Install a nylon Faslink and cut off the
excess wire the same as was done with the throttle servo.
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7. Place your elevator servo into the servo tray as shown,
positioning the last hole of the servo arm over the inside
pushrod wire. Drill a 1/16" [1.6mm] hole through each of the
mounting holes. Remove the servo, then install and remove a
servo mounting screw into each hole. Apply a couple drops of
thin CA into the holes to harden the threads. When the glue has
cured permanently, mount the servo to the servo tray.
Install the Radio System
28