Futaba
DIGITAL PROPORTIONAL
RADIO CONTROL
Thank you for purchasing a Futaba digital proportional radio control set.
Please read this manual carefully before using your set.
AM
FEATURES OF FP-4NBL
The FP-4NBL is a 4 channel AM proportional radio control
set
with
an
ergonomic
pursuit of easier operation, newly designed sticks for smooth
and positive operation, servo reversing switch for each channel, and other innovations based on the opinions and needs of
many RC modelers.
Please read this manual before using your new set.
case
created
as a result of the exhaustive
TRANSMITTER FP-T4NBL______________
• Servo reversing switch for each channel. Servos are reversed
by using this switch.
• Newly designed sticks operate smoothly and positively.
Spring tension mechanism allows adjustment of the operating feel of the stick lever.
• Nonslip adjustable lever head allows adjustment of the stick
length as desired.
• Functional case, created as a result of the exhaustive pursuit
of easier operation, has evolved a thick case which fits into
the palm of the hand.
• Easy to read transmitter battery voltage/output level meter.
• Neck strap bracket provided as standard. Operation is easier
if the transmitter is hung from your neck by using the neck
strap.
• Nicad operation as standard.
RECEIVER FP-R114H
• High performance AM 4 channel receiver in which miniature
size and light weight have been achieved by using the PC
board space to the maximum.
• Narrow band ceramic filter improves rejection of adjacent
channel interference.
RECEIVER WITH LINEAR CONTROLLER MCR-4A
• FET amplifier with miniature lightweight AM 4-channel receiver and motor controller in one pack.
• Since the drive motor power supply (7.2 V NiCd battery
pack, etc.) can also be used to power the receiver and servos,
troublesome wiring is unnecessary and the model can be
made lighter.
• Built-in high performance low voltage "autocut" circuit pre-
vents loss of control due to power supply voltage drop
during flight.
• Since the motor speed can be controlled steplessly from
maximum alow to high, acrobatics equal to those of engine
aircraft can be reproduced even with a motor aircraft.
FEATURES OF MCR-4A RECEIVER
• Narrow band design using a narrow band ceramic filter.
FEATURES OF MCR-4A AMP
• Built-in heat protector prevents overheating of the amplifier
by a continuous overcurrent.
• Motor idle or maximum slow can be arbitrarily set at the
transmitter throttle stick maximum slow position by built-in
idle point trimmer.
SERVO FP-S148 RUGGED, LOW-PROFILE SERVO
• Vibration and shock resistance have been improved further
by using a direct wiring system which directly connects the
servo amp, motor and potentiometer.
•
The height of the
high speed, and smooth movement equal to that of the coreless servo have been realized by using a new small, highperformance motor. (Output torque 3kg.cm, operating
speed 0.22 sec/60°).
servo
has
been
reduced and
high
torque,
SERVO FP-S133 HIGH-QUALITY MICROSERVO_
• Futaba hybrid custom 1C provides high starting output
torque, narrow dead-band, and excellent trackability.
• Thick film gold plated connector pins insure positive contact
connector shape increase reliability against shock and vibration. The connector housing has a reverse insertion prevention mechanism.
• Adjustable (splined) horn permits arbitrary setting of the
neutral position.
• Despite being a microservo, operating speed is a fast 0.21
sec/ 60° and output torque is a high 2.2 kg/cm.
SET CONTENTS AND RATINGS
(Specifications are subject to change without prior notice.)
FP-4NBL
Transmitter
Receiver
Servo
Charger
Nicad Battery
Switch
Accessories
For engine
powered plane
FP-R114H x 1
FP-S148 x 3
NR-4QBx1 | NR-4Kx1
SSW-J x 1
Servo tray ——
Extension cord. Neck strap. Frequency flag,
Spare horn. Screws
For glider
FP-T4NBL x 1
FBC-8B(4) x 1
For electric
powered plane
MCR-4A x 1
FP-S133x2
—
TRANSMITTER FP-T4NBL
Operating system : 2 stick, all channels
servo reverse
Transmitting frequency : 72 MHz bands
Modulation system : AM
(amplitude modulation)
Power requirement : 9.6V 500 mAH Nicad
Battery
Current drain : 150mA
RECEIVER
Receiving frequency : 72 MHz bands
Crystal replacement system: Frequency can be
Intermediate frequency 455 kHz
Power requirement 4.8 V Nicd Battery
Current drain 18 mA (at 4.8 V)
Dimensions 1.3x1.87x0.78 in
Weight 0.9 5 oz (27.5 g)
Receiving range 500m on the ground
RECEIVER WITH LINEAR CONTROLLER MCR-4A
Dimensions
Weight
RECEIVER
Receiving frequency
Intermediate frequency
Current drain
Receiving range
AMP
Operating system
Voltage
Continuous maximum current
Momentary maximum current
Resistance loss
1.24x2.92x0.63 in (31.6x74.2x16.1mm)
(excluding protrusion at top)
1.5 oz (44.0 g) (excluding switches and
connectors)
72 MHz bands
455
kHz
26mA
500m on the ground 1000m in the air
with the FP-T4NBL
(under best conditions)
: idle to maximum speed, no brake, idle
point trimmer
:
6.0
to
8.4
:
100
:
450
: 0.01 ohm
V
A
A
FP-R114H___________
changed within the
same frequency band
by changing the precision crystal.
(shared with servo)
(33x47.4x19.8mm)
1000m in the air
with the FP-T4NBL
(under best conditions)
SERVO FP S133
Control system
Operating angle
Power supply
Power consumption
Output torque
Operating speed
Dimensions
Weight
SERVO FP-S148
Control system
Operating angle
Power requirement
Current drain
Output torque
Operating speed
Dimensions
Weight
+ pulse width control 1520 us neutral
One side 40° or greater (including trim)
trim)
4.8V
or
6.0V
oz
(shared
(19g)
6.0V, 8mA (at idle)
30.6 oz/in (2.2 kg.cm)
0.21 sec/60°
1.10 x 051 x 1.14 in (28 x 13x29 mm)
0.67
+putse width control
1520 us neutral
One side 45° or more
4.8V-6V
6.0V, 12mA (at idle)
42 oz-in (3kg.cm)
0.22 sec/60°
1.59x0.77x1.4 in
(40.4x19.8x36mm)
1.5oz
with
receiver)
(44.4
g)
TRANSMITTER FP-T4NBL
CONTROLS
Fig. 1 and Fig. 2 show the name
of each part of the transmitter.
Memorize the position and oper-
ation of each switch and control.
Level meter
Throttle
Rudder trim lever
Rudder
MODE I
are opposite those shown in the
fiqure in Mode-l.
In the following descriptions, all the servo reversing switches
are assumed to be in the normal position. When they are in the
reverse position, operation is the opposite of that described.
trim
Elevator and
lever
Charging
jack
Throttle
MODE II
Aileron
Elevator
Nonslip adjustable
lever head
Engine throttle
Antenna
Handle
Neck strap bracket
Elevator trim lever
Power switch
Aileron trim lever
Transmitter
crystal
Fig.1
Rudder Rudder operation
Aileron trim lever Aileron trimmer
Elevator trim lever Elevator trimmer
Throttle trim lever Throttle trimmer
Rudder trim lever Rudder trimmer
Power switch ON in the up position
Level meter
Fig.
2
Servo
reversing
switches
Battery cover
Aileron Aileron operation
Elevator Elevator operation
Throttle Throttle operation
• This meter indicates the transmitter battery voltage.
• When the antenna is extended fully and the power switch is
set to ON, the pointer should deflect to the silver zone.
Neck strap bracket
Bracket for neck strap. (Neck strap is sold separately.)
Antenna
Strong
telescoping
antenna. Extend
it
to
its
full
length
when using the transmitter.
Handle
Use this bar to carry the transmitter.
Nonslip adjustable lever head
The length of the lever head can be adjusted to suit the
operator.
Adjust to the length of your hand.
18 Servo reversing switches
Using the servo reversing switches
• The left side of each switch is the normal position.
• The servo reversing switches reverse the direction of operation of the servos.
Fig.
5
Lever head
Unlock lever heads
in the arrow direction, and adjust the head to
the most comfortable length, then lock it by
turning it in the direction opposite the arrows. Fig. 3
and
Lever head
, by turning them
Charging jack
Use this jack for charging.
Transmitter crystal
Battery cover
Charging of transmitter and receiver Nicad batteries
Recharge the receiver and transmitter Nicad batteries as
shown in Fig. 4.
AC-plug.
Charger PBC-8B
LED
Charging plug
for transmitter.
Transmitter
Nicad battery
NT-8JY
Tx
Rx
Rudder servo
reversing switch
Throttle servo
reversing switch
Elevator servo
reversing switch
Aileron servo
reversing switch
After linkage is complete, inspect the servos. If the direction of
operation of the stick lever and the direction of operation of a
servo are opposite, switch the appropriate servo reversing switch.
NORM-> Normal
REV-> Reverse
Fig.
The tension of the stick lever spring can be adjusted.
When these screws are
removed, the back cover
can be removed.
•The tension of the
spring can be adjusted by removing
the transmitter back
cover and turning
the screw for each
stick. Set the springs
for the best stick feel.
6
Fig.
4
Battery cover
NR-4QB
• Connect the charging plug of the dual charger to the transmitter charging jack. Connect the Rx-connector of the dual
charger to the receiver Nicad battery plug, and AC-plug the
dual charger to AC-outtet socket as shown in the figure.
• The receiver battery can be used about 10 times at 10 minutes per flight between rechargings.
• Charge the batteries for about 15 hours. When the set is not
in use for some time, repeat discharge and charge two to
three times before use. (If the batteries are not used for a
long time, their capacity will go down).
• The dual charger transmitter and receiver Nicad batteries
independently or simultaneously.
Notes
1) First connect the charger to the transmitter charge jack.
The LED on the charger will glow RED.
2) Next connect to the receiver switch harness charge cord.
The LED will change to GREENISH-RED (ORANGE).
3) In the case where only one battery pack is connected, the
LED color will be:
TXonly: GREEN
RXonly: RED
Aileron
Elevator
Nicad Battery
Connector
Caution
Do not pull the Nicad battery
connector when the back cover
is removed. The power switch
may be damaged if the battery
connector is strongly pulled.
Rudder
Use a small Phillips
screwdriver
RECEIVER FP-R114H, SERVO FP-S1480R FP-S133(IN CASE OF ENGINE POWERED PLANE OR GLIDER)
Receiver, servos, switches, and
battery holder connections
In case of glider
In case of engine
powered plane
Pay careful attention to the polarity
of the connector.
SSW-J
Power switch
Antenna wire
Charging plug
The parts enclosed by the
dotted lines must
be purchased
separately.
Extension
cord
Three servos are
supplied as standard. (In case of
glider, two servos
are supplied as
standard.)
Aileron
servo
Elevator
servo
Throttle
servo
Rudder
servo
Fig.
7
RECEIVER WITH LINEAR CONTROLLER MCR-4A, SERVO FP-S133(IN CASE OF ELECTRIC POWERED PLANE)
MCR-4A, servo, and battery connection
Idle point trimmer
Antenna wire
Receiver crystal
Extension cord
• The MCR-4A can control 280 class to 540 class motors.
•6V (5 batteries), 7.2 V (6 batteries), or 8.4 V (7 batteries) NiCd
battery pack can be used with the MCR-4A. (When using a 540
class, etc. motor, purchase an NiCd battery pack connector off the
market. Be sure that the (+) and (—) polarities are correct. If the
(+) and (—) connections are reversed, the MCR-4A may be damaged beyond repair.)
Power switch
Motor terminal
The parts inside the dotted
lines are not included.
Always use a noise killer
capacitor on the electric motor.
Drive motor
Start switch
Rudder servo (CH4)
Elevator servo (CH2)
Aileron servo (CH1)
NiCd
battery pack
Fig.
8
The
idle
point
trimmer
• Set the transmitter throttle
servo reversing switch to the
normal position.
• Set the transmit throttle
stick to the slowest position
(stick all the way back ),
turn on the MCR-4A power
switch, press the start switch,
and set the idle point trimmer to the point at which
the motor idles.
• If the start switch is not
pressed, the drive motor will
not
run.
• Turn the idle point trimmer slowly and without too much
force.
sets
the
drive
motor
idling
point.
• If the drive motor rotates in the reverse direction, change
the connection of the lead wire from the MCR-4A at the
motor terminals.
• Before pressing the MCR-4A start switch, check that the
transmitter throttle stick is in the slowest position. Starting
the drive motor suddenly is dangerous. This also applies
when the idle point trimmer is changed. Be very careful.
• If an overcurrent flows continuously in the motor for some
reason, the heat protector will operate and stop the motor.
When the temperature drops after a short time, the motor
can be controlled once more.
Correct the cause of the continuous overcurrent before using
the
set.
• The heat protector does not protect the set against momen-
tary overcurrent caused by shorting of the drive motor lead
wires, etc.
• If the drive motor is stopped by the "autocut" function dur-
ing flight, land the aircraft immediately and safely.
PRECAUTIONS
• Connect the receiver (or MCR-4A), servos, switches, and
battery firmly as shown in Fig. 7 (Fig. 8). Then extend the
transmitter and receiver antennas fully.
• Set the transmitter power switch to ON. Then set the receiver (or MCR-4A) power switch to ON. The servos stop near
the neutral position. Operate the transmitter sticks and
check that each servo follows the movement of the stick.
• Connect the pushrod to each servo horn, then check if the
direction of travel of each servo matches the direction of
operation of its transmitter stick. To reverse the direction of
servo travel, switch the servo reversing switch.
• Operate each servo over its full travel, and check if the push-
rod binds or is too loose. Applying unreasonable force to the
servo horn will adversely affect the servo and quickly drain
the battery. Always make the travel of each control mecha-
nism somewhat larger than the full travel (including trim) of
the servo horn. Adjust the servo horns so that they move
smoothly even when the trim lever and stick are operated
simultaneously in the same direction.
• Be alert for noise.
This set is noise-resistant, but is not completely immune to
noise. We recommend the use of noiseless parts and noise
killer capacitor.
• When installing the switch harness, cut a rectangular hole
somewhat larger than the full stroke of the switch and install
the switch so that it moves smoothly from ON to OFF. This
also applies to the switch mount when the switch is installed inside the fuselage and is turned on and off from the outside
with a piece of wire, etc. Install
not be exposed to engine oil, dust, etc.
• Even though the receiver antenna is long, do not cut or
bundle it.
• Install the servos securely. Tighten the mounting screws until the rubber grommet is crushed slightly. If the screws are
too tight, the cushioning effect will be adversely affected.
the
switch where
it
will
• Spare servo horns are supplied. Use them as needed.
• Wrap the receiver in sponge rubber. Waterproof and dustproof the receiver by placing it in a plastic bag and wrapping
a rubber band around the open end of the bag. Do the same
with the receiver/servo battery.
• Use the rubber bands wrapped around the receiver to hold
the servo and switch leads.
• After mounting is complete, recheck each part, then check
the range by making the transmitter antenna as short as
possible, extending the receiver antenna fully, and operating
the set from a distance of 20m to 30m. The movement of
each servo should follow the movement of each stick of the
transmitter.
• The motor controller connects to channel 3 in the MCR-4A.
•
Motor
aircraft vibrate
less
than engine aircraft, but the
receiver and servo should be vibration proofed.
•If the NiCd battery pack is connected in reverse,
the MCR-4A may be damaged beyond repair. Be
sure that the (+) and (—) connections are correct.
Black lead wire 0
Red lead wire +
Fig.
11
• After mounting and checking are complete, take your model
to the shop where you purchased the set, or to an experienced radio control modeler, and ask them to teach you how to
handle your radio control set in the proper manner and to
inspect your set-up carefully.
•
To
enjoy radio
control
models
fully,
be
sure
to
observe
all
safety standards.
USING THE ANTENNA FREQUENCY FLAG
SERVO MOUNTING
Fig.
10
This horn permits shifting of the
servo neutral position at the servo
horn. Setting and shifting the neutral position.
a) Angle divisions
Fig.
13
1) The splined horn has 25 segments. The amount of change per
segment is; 360-25=14.4°.
2) The minimum adjustable angle
is determined by the number of
arms or number of the holes. For
four arms, the minimum adjustable angle is:
b) Effect
Fig. 14
To shift the holes center line to
the right (clockwise) relative to
baseline A, shift arm 2 to the position of arm 1 and set it to the
position closest to baseline A.
[Example] For a four arm horn,
the angular shift per segment is
14.4". The shift to the right is 90°
-(14.4 x 6) = 3.6°.
To shift by the same angle in the
opposite direction, use the opposite arm number.
Attach the frequency flag to
the flag holder as shown in the
figure.
Fig.
15
For a six arm horn, turn the arm
counterclockwise and set arm 2
to the position of arm 1. The adjustable angle is 60° - (14.4 x 4)
=2.4°.
The flag can be attached to.
and removed from, the
antenna with one touch.
Arm 3 shift 4.8° to the right, arm
6 shifts 2.4° to the left, and arm 4
shifts 7.2° to the right and left.
Fig.
Fig.
12
16
No.
10
11
12
13
14
15
16
17
18
19
20
21
22
Upper case
1
2
Middle
Motor
3
4
Motor pinion
5
1st gear
2nd gear
6
7
3rd gear
4th gear
8
Final gear
9
Output shaft
Intermediate shaft
VR joint
VR drive plate
Potentiometer
Splined horn F
Horn mounting screw
Bottom case
Case mounting screw
Printed wiring board
Grommet
3PC cord 170
Name plate
case
Part name
Part No.
S05850
S05860
S91241
S02781
S02782
S02783
S02784
S02785
S02786
S05880
S04285
S05872
S05626
i39600
S01241
J55171
S05870
S40070
AS
1259
S90045
AT2213
S60122
No.
10
11
12
13
14
15
16
17
18
19
20
21
22
23
1
Upper case
Middle case
2
Bottom case
3
4
Metal bearing Metal bearing
5
6
Potentiometer
7
Potentiometer drive plate
Motor
8
Motor pinion
9
Screw
1 st gear
2nd gear
3rd gear
Final gear
Intermediate shaft
2nd shaft
Servo horn D
Binding head tapping screw 2.6x8
Printed wiring board
3PB-WRB300G
w/gum bush
Pan head truss screw
Nameplate
Part name
Part No.
VCS-48
FCS-48
FCS-48
S04137
S04136
139668
S02753
S91239
S02461
J50002
FGS-48
FGS-48
FGS-48
FGS-48
S02495
S02494
PSH-6W
FSH-41
ASH
57
AT2453
S90045
S50360
S60099
FUTABA CORPORATION
Makuhari
Overseas Marketing & Sales Radio Control Systems
Phone: (043)296-5119 Facsimile: (043)296-5124
Techno
Garden
Bidg.,
B6F
1-3
Nakase,
Mihama-ku,
FUTABA CORPORATION OF AMERICA
4 Studebaker, Irvine California 92718, U.S.A.
Phone:714-455-9888
Telex:
23-0691227
Facsimile:
Chiba
714-455-9899
261-01,
Japan
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