Mount The Kill Switch (Gas Engines) - GREAT PLANES Giant Super Sportster Instruction Manual

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4. Mount a 2-56 ball link ball to the carburetor arm on the
engine with a 2-56 lock nut. Use a piece of wire sharpened
on the end to mark the firewall where the throttle pushrod
will come through to align with the carburetor arm. Be
certain the throttle pushrod location will not interfere with the
fuel tank when in position.
Refer to the following two photos
while hooking up the throttle.
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5. If necessary, remove the engine. Drill a 3/16" [4.8 mm]
hole through the firewall where you made the mark for the
throttle pushrod.
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6. Cut the 3/16" x 24" [4.8 x 610 mm] gray pushrod tube to
the correct length to be used for the throttle pushrod guide tube.
Then, roughen the outside with coarse sandpaper so glue will
adhere. Guide the tube through the firewall and the slotted
holes on either side of the former that holds the wing dowels.
Note: A plywood pushrod guide tube
mount is supplied with this kit. If the throttle
does not align with one of the slotted holes
in the former, you could position the pushrod
tube outside the slots and use the mount to
secure the throttle pushrod tube. Just slip the
mount over the tube and glue it to the former.
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7. Securely glue the plywood servo tray into position so
that the cutout for the throttle servo will be on the same side
as the throttle pushrod. Drop the throttle servo into the tray.
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8. Hook up the throttle using the hardware shown. Mount the
servo to the tray with the screws that came with the servo.
Remove the servo and harden the holes with a few drops of thin
CA. Then, remount the servo. Glue in the guide tube with CA.
MOUNT THE KILL SWITCH
(FOR SPARK IGNITION ENGINES ONLY)
As stated in the IMAA Safety Code, all magneto spark-
ignition engines must have a manually operated, coil-
grounding switch to stop the engine and prevent accidental
starting. A home-made switch could be made from a .3 Amp
slide switch, terminals and 16 gauge wire purchased from a
Radio Shack ® or other electronic store, or fashioned from a
Great Planes Ignition Switch Harness (GPMG2150). For the
model in the manual, the Great Planes switch was used with
the lever switch removed from the assembly (the servo-
operated cutoff option was not used). If, in addition to the
required manually operated switch, you would also like a
servo-operated cutoff switch, use a standard servo and
actuate the lever switch via hardware purchased separately.
Refer to this photo while mounting the ignition switch.
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1. Assemble the ignition switch mount from the plywood
parts shown. Fuelproof the mount with fuelproof paint or
epoxy, mount the switch to the mount, and then glue the
mount to the fuselage where it will be easily accessible from
outside the model. (The balsa stick shown in the photo was
used to temporarily hold the switch mount in position while
the epoxy gluing it was hardening.)
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2. Connect the wires to the engine, making certain they
will not contact the engine or muffler. If necessary, the wires
could be wrapped with silicone fuel tubing for insulation.
16
PUSHROD GUIDE
TUBE MOUNT