Great Planes Super Stearman EP ARF - GPMA1150 - Manual (Page 15)

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4. Two lengths of Velcro ® are included with the kit to secure
the battery. If you are using the recomended battery you will
only need to install Velcro
® in the forward slots. Other size
and shaped batteries may require the use of the second piece.
Install the Velcro
® as needed.
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5. Center the servo and then install a screw lock connector,
nylon retainer and 2-56 x 3/16" [2mmx 4.8mm] screw into the
center hole on the servo arm.
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6. Install the elevator servo into the servo tray, sliding
the pushrod wire into the screw lock connector. Drill a 1/16"
[1.6mm] hole through each of the servo mounting tab holes.
Install and remove the servo mounting screw. Apply a couple
drops of thin CA in the screw hole to harden the threads. Once
the glue has hardened, secure the servo with the mounting
screws that came with the servo.
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7. Install a longer servo arm on the rudder servo. The arm
must be long enough so that you can install the screw lock
connector into a hole approximately 1/2" [13mm] from the
center of the servo spline. Install the screw lock connector,
retainer and 2-56 x 3/16" [2mmx 4.8mm] screw and then install
the rudder servo into the tray using the same technique used
for the elevator servo.
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8. Cut off the excess pushrod wire, leaving 1/4" beyond
the connector.
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9. Install the remaining self adhesive Velcro to the back of
your receiver and the plywood tray as shown.