FUTABA FX40 Instruction Manual page 23

Safety precautions when you install
receiver and servos
Warning
Connecting connectors
Be sure to insert the connector until it stops at
the deepest point.
reasons such as vibration, your aircraft will crash.
How to protect the receiver from vibration and
water
Wrap the receiver with something soft such
as foam rubber to avoid vibration. If there is
a chance of getting wet, put the receiver in a
waterproof bag or balloon.
the receiver and let the receiver malfunction to crash your
aircraft.
Receiver's antenna
Never cut the receiver's antenna. Do not bind
the receiver's antenna with the cables for
servos.
Locate the receiver's antenna as far as possible
from metals such as frames.
*Cutting or binding the receiver's antenna will reduce the
crash.
Servos throw
bind or sag when operating the servos to the
full extent.
*If excessive force is continuously applied to a servo, your
aircraft may crash because the servo would be damaged
and the battery voltage would be consumed rapidly.
Mounting servos
Use a vibration-proof rubber (such as rubber
grommet) under a servo when mounting the
servo on a servo mount. And be sure that the
servo cases do not touch directly to the metal
parts such as servo mount.
*If a servo case is in direct contact with the airframe, the vi-
bration of the airframe directly travels to and may damage
the servo.
Wood screw
Rubber
grommet
Brass eyelet
Servo mount
(Airplane/Glider)
Fastening of servo 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.
[Fastening example]
Internal antenna mounting (Airplanes)
Use rubber band to stretch
antenna and then fix it.
Use a rubber bushing to the position where
antenna is coming out from the airframe so
that the antenna won't be cut due to the
friction.
Use rubber band to stretch antenna and then
fix it.Make a knot inside of the airframe so that
the antenna will not fall out.
Mounting the power switch
When mounting a power switch to an airframe,
make a rectangular hole that is a little larger than
the total stroke of the switch so that you can turn
ON/OFF without binding.
Avoid mounting the switch where it can be
covered by engine oil and dust. In general, it is
recommended to mount the power switch on the
2.3-2.6mm nut
washer
Rubber
grommet
Brass eyelet
Servo mount
2.3-2.6mm screw
(Helicopter)
Fasten about 5-10cm from
the servo outlet so that
the lead wire is neat.
Margin in the lead wire.
Antenna
<Before Use> 23