Great Planes Super Stearman 1.20 ARF - GPMA1350 - Manual (Page 10)

the clevis. Drill a 5/64" [2mm] hole in the outer hole of the
servo arm. Center the servo and the aileron. With a fine-tip
marker, mark the wire where it aligns with the outer hole of
the servo arm. Make a 90 degree bend on the mark. Cut the
wire so the wire is 3/8" [10mm] in length after the bend.
Insert the wire into the servo arm and lock it in place with a
nylon Faslink.
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6. Repeat steps 1-5 for the left wing panel.
If you are installing servos in the top wing, repeat steps
1-6 for the top wing. If not, skip ahead to Step 12. St
eps
7- 11 are only if you are installing servos in the top wing.
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7. A “Y” harness is required to connect the servos in the
upper wing to the receiver. Plug the two servo leads in the
top wing into a “Y” harness compatible with your radio
system. To provide a plug into the receiver we have used a
slightly modified Ernst Charge Receptacle (ERN3124 for
Futaba) and a 12" [305mm] servo extension.
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8. Cut the charge receptacle in half just above the
locking fingers.
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9. Put a couple of small drops of medium CA on the sides
of the female end of the servo extension. Then slide the
servo extension into the charge receptacle.
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10. Near one of the cabanes, cut a hole in the top of the
fuselage just large enough for the servo extension and the
charge receptacle to fit into. Drill a 1/16" [16mm] hole into the
fuselage through each of the mounting holes in the charge
receptacle. Thread and remove the screws from the charge
receptacle into the holes you drilled. Apply thin CA into the
holes to harden the threads. Glue the charge receptacle to the
fuselage with R/C 56 canopy glue. Install the mounting screws
in the charge receptacle, into the holes you have drilled.
Later, when you are installing the radio system, this servo
extension will be plugged into the proper channel of your
receiver. When preparing the airplane to fly you will be able to
plug the upper wing servos into the receptacle, completing the
the connection from the upper wing to the receiver.
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11. On the bottom wing, cut the covering away from the
holes in the leading edge of the wing for the nylon wing
dowels. Glue them in place with 6-minute epoxy. Wipe any
excess epoxy away with denatured alcohol. When properly
positioned the wing dowels should extend approximately
3/8" [10mm] beyond the leading edge of the wing.
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12. Cut the covering from the holes on the plywood wing
bolt plate.
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13. Cut the covering from the holes at the wing trailing
edge on both the top and bottom of the wing.
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