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The BEC) mark is displayed on the front of the receiver of BEC (Battery
Eliminator Circuitry) system sets with a receiver with shared power supply
regulator.
RECEIVER FP-R102GR AND SERVO FP-S148
a
Fig. 9
RADIO
CONIRGO:
>TStta
2
CHANNEL
RECEIVER
Antenna wire
Red common
2P
connector (male pins)
Connect
the servo
and
switch
as
shown
in the
figure
and
extend
the transmitter and receiver ante-
nna fully.
(3)
When
motor car uses an ordi-
nary
common
power
supply
chassis
Red common
2P
connector
FrN
(Female pins)
Buy
the
red
common
2P
connector
from
the
kit
manufacturer and connect to
the controller.
Pin 1: Minus
Pin 2: Plus
{—
Na
Receiver crystal
a
a a a
a a an
a Rg
S
a eas
Red common
2P
connector
Connection to this connector
(1) When
chassis power supply of
engine or motor car is separate
Wrapped with
"__\rubber
bands.
(2)
When
motor car uses a speci-
al BEC system chassis (com-
mon
power
supply
specifi-
cations)
Red common
2P
connector
Ga
Controller
-
0
£90
Ses,
no
-n
Orb O}
(Female pins)
i
O
Yo
H
K
©
i
i
H
`
f
Fat
Connect to the red common
————————__
Snnnnnene LO gua"
2P connector
of the control-
ler.
The
Futaba
BEC
(Battery
Eliminator.
Circuitry)
system
can
also use
a common
power
supply
with
the conventional
four penlight
batteries system (separate power supply).
Since they cause a voltage drop, always remove them.
e Set the transmitter
power
switch
to ON, then
set the receiver power
switch to ON.
The servos stop near the neutral position.
Operate the
transmitter sticks and check if each servo faithfully follows operation
of the sticks.
e Connect
the pushrod
to each servo
horn, then check
if the direction
of travel of each servo matches the transmitter operation.
è Operate
each servo
over
its full travel and check if the pushrod binds
or
is too
loose.
Applying
unreasonable
force to the servo
horn
will
adversely
affect the servo and quickly drain the battery.
Be especially
careful when using 8.4V.
.
e Always make the full stroke (including trim) of the servo horns some-
what
larger than the full travel.
Adjust the servo horns so that they
move
smoothly
even when
the trim lever and stick are operated simul-
taneously
in the same. direction.
e Be alert for noise.
Always solder a noise killing capacitor to the running motor.
If metal
parts
touch
each other due to vibration, noise will be generated and
cause
the receiver servos to operate
erroneously.
We recommend
the
use of noiseless parts.
e Even though the receiver antenna wire is long, do not cut or bundle it.
The range of the radiowaves.will be shortened.
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