8
RADIO INSTALLATION
Follow these guidelines to properly mount the servos, receiver and battery.
INPORTANT!
: Please use PCM receiver if the composition parts of the model used much metal, carbon graphite etc.
because they will generates quite a lot of the noise.
• Make certain the
alignment tab
on the battery, switch and servo connectors is oriented correctly and “keys” into the
corresponding notch in the receiver or connectors before plugging them in. When unplugging connectors, never pull on the
wires. Always pull on the plastic connector instead.
• If any servo wires are not long enough to reach the receiver, servo extension wires (available separately) may be used.
Servo
Rubber
grommet
Servo
Rubber
grommet
• Always mount the servos with the supplied
rubber grommets
. Do not over
tighten the screws. No part of the servo casing should contact the mounting
rails, servo tray or any other part of the airplane/helicopter structure. Otherwise,
vibration will be transmitted to the servo causing premature wear and/or servo
failure.
• Note the small numbers (1, 2, 3, 4) molded into each arm on the Futaba 4-arm servo arms. The numbers
indicate how many degrees each arm is “off” from 90 degrees to correct for minute manufacturing
deviations from servo to servo.
• To center the servos, connect them to the receiver and turn on the transmitter
and receiver. Center the trims on the transmitter, then find the arm that will be
perpendicular to the pushrod when placed on the servo.
• After the servos are installed, operate each servo over its full travel and check that the pushrods and servo arms do not
bind or contact each other. Also make sure the controls do not require excess force to operate. If there is an objectionable
buzzing sound coming from a servo, there is probably too much resistance in the control. Find and correct the problem.
Even if there is no servo damage, excess battery drain will result.
• Use the
mounting plate
from the receiver on/off switch as a template for the cutout and screw holes. Mount the switch on
the side of the fuselage opposite the engine exhaust, and where it won’t be inadvertently turned on or off during handling or
storage. Be certain the switch moves without restriction and “snaps” from ON to OFF, and that the cutout allows
full motion
of the switch in
both
directions.
• When you install the switch harness to the helicopter, please use switch cover. Generally sandwich the frame by switch and
switch cover and securely tighten the screws. It might be different installations on model by model. In that case, please
follow the model instruction manual.
Fasten about 5-10cm
from the servo outlet
so that the lead wire
is neat.
Margin in the lead wire.
• To prevent the servo lead wires from being broken by vibration during flight,
provide a margin so that the wire sticks out slightly and fasten it at suitable
points. In addition, periodically check the wire during daily maintenance.
