Thank you for purchasing a Futaba 4PL-2.4GHz system.
Before using your 4PL-2.4GHz system, read this manual carefully in order to use
your R/C set safely.
After reading this manual, store it in a safe place.
Application, Export, and Modification
1. This product may be used for models only. It is not intended for use in any application
other than the control of models for hobby and recreational purposes.
2. Exportation precautions:
(a) When this product is exported from the country of manufacture, its use is to be
approved by the laws governing the country of destination for devices that emit radio
frequencies. If this product is then re-exported to othercountries, it may be subject to
restrictions on such export. Prior approval of the appropriate government authorities
may be required. If you have purchased this product from an exporter outside your
country, and not the authorized Futaba distributor in your country, please contact the
seller immediately to determine if such export regulations have been met.
(b) Use of this product with other than models may be restricted by Export and Trade
Control Regulations, and an application for export approval must be submitted.
3. Modification, adjustment, and replacement of parts: Futaba is not responsible for unauthorized modification, adjustment, and replacement of parts on this product. Any such
changes may void the warranty.
Compliance Information Statement (for U.S.A.)
This device, trade name Futaba Corporation of America, model number R2104GF, complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference.
(2) This device must accept any interference received, including interference that may
cause undesired operation.
The responsible party for the compliance of this device is:
Futaba Service Center
3002 N Apollo Drive Suite 1, Champaign, IL 61822 U.S.A.
TEL (217)398-8970 or E-mail: support@futaba-rc.com (Support)
TEL (217)398-0007 or E-mail: service@futaba-rc.com (Service)
2
Battery Recycling (for U.S.A.)
The RBRC™ SEAL on the (easily removable) nickel-cadmium battery
and nickel-metal-hydride battery contained in Futaba products indicates
that Futaba Corporation of America is voluntarily participating in an industry program to collect and recycle these batteries at the end of their
useful lives, when taken out of service within the United States. The
RBRC™ program provides a convenient alternative to placing used nickel-cadmium
batteries and nickel-metal-hydride batteries into the trash or municipal waste system,
which is illegal in some areas.
You may contact your local recycling center for information on where to return the
spent battery. Please call 1-800-8-BATTERY for information on NiCd/NiMH battery
recycling in your area. Futaba Corporation of America's involvement in this program
is part of its commitment to protecting our environment and conserving natural resources.
NOTE: Our instruction manuals encourage our customers to return spent batteries
to a local recycling center in order to keep a healthy environment.
RBRC™ is a trademark of the Rechargeable Battery Recycling Corporation.
• No part of this manual may be reproduced in any form without prior permission.
• The contents of this manual are subject to change without prior notice.
• This manual has been carefully written. Please write to Futaba if you feel that any corrections or clarifications should be made.
• Futaba is not responsible for the use of this product.
3
Table Of Contents
For Your Safety As Well As That Of Others .........................8
Explanation of Symbols ................................................................8
2.4GHz System Precautions .........................................................8
High Speed Mode Precautions .....................................................8
Optional Parts ...........................................................................102
When requesting repair ............................................................102
For Your Safety
As Well As
That Of Others
Before
Using
Installation
Initial
Set-Up
Function
Map
Functions
Reference
7
For Your Safety As Well As That Of Others
Use this product in a safe manner. Please observe the following safety precautions at all
times.
Explanation of Symbols
The parts of this manual indicated by the following symbols are extremely important
For Your Safety As Well As That Of Others
and must be observed.
Symbols Explanation
Danger
n
Warning
n
n
Caution
Symbols:
Indicates a procedure which could lead to a dangerous situation and may
cause death or serious injury if ignored and not performed properly.
Indicates procedures which may lead to dangerous situations and could
cause death or serious injury as well as superficial injury and physical
damage.
Indicates procedures that may not cause serious injury, but could lead to
physical damage.
: Prohibited
l
: Mandatory
j
2.4GHz System Precautions
Warning
n
Special attention should be paid before turning on the system while other cars are running or
j
other airplanes are flying because the 2.4GHz RC system could potentially affect them.
Be sure to set the Fail Safe function.
j
High Speed Mode Precautions
n
Caution
When using the T4PL in the high speed (HIGH) mode, always use it under the following condi-
j
tions:
Servos :Futaba digital servo (including BLS Series brushless servos)
Receiver’s battery :Matched to the ratings of the receiver and connected digital servo (dry cell battery cannot be used).
Transmitter mode :HIGH mode (See p.42 for setting method.
Under other conditions, the set will not operate, or the specified performance will not be displayed even if it operates.
In addition, it may cause servo trouble. Futaba will not be responsible for damage, etc. caused by combination with the
products of other companies.
In addition, the FSU Fail Safe Unit cannot be used because the system is different. Use the fail safe function of the
transmitter.
When using analog servos, always switch the T4PL servo response to the "NORM" mode.
j
Transmitter mode :"
Receiver’s battery :Matched to the ratings of the receiver and connected servo (dry cell battery cannot be used).
The set cannot operate in the "HIGH" mode. Operation in this mode will cause trouble with the servo and other equipment.
Digital servos (including BLS Series brushless servos) can also be used in the "NORM" mode.
NORM" mode (See p.42 for setting method.)
)
8
Operation Precautions
Warning
n
Do not operate outdoors on rainy days, run through puddles of water or use when visibility is limited.
l
Should any type of moisture (water or snow) enter any component of the system, erratic operation and loss of control
may occur.
Do not operate in the following places.
l
-Near other sites where other radio control activity may occur.
-Near people or roads.
-On any pond when passenger boats are present.
-Near high tension power lines or communication broadcasting antennas.
Interference could cause loss of control. Improper installation of your Radio Control System in your model could result in
serious injury.
Do not operate this R/C system when you are tired, not feeling well or under the influence of
l
alcohol or drugs.
Your judgment is impaired and could result in a dangerous situation that may cause serious injury to yourself as well as
others.
Do not touch the engine, motor, speed control or any part of the model that will generate heat
l
while the model is operating or immediately after its use.
These parts may be very hot and can cause serious burns.
Always perform an operating range check prior to use.
j
Problems with the radio control system as well as improper installation in a model could cause loss of control.
(Simple range test method)
Have a friend hold the model, or clamp it down or place it where the wheels or prop cannot come in contact with
any object. Walk away and check to see if the servos follow the movement of the controls on the transmitter. Should
you notice any abnormal operation, do not operate the model. Also check to be sure the model memory matches the
model in use.
Turning on the power switches.
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Always check the throttle trigger on the transmitter to be sure it is at the neutral position.
1. Turn on the transmitter power switch.
2. Turn on the receiver or speed control power switch.
Turning off the power switches
Always be sure the engine is not running or the motor is stopped.
1. Turn off the receiver or speed control power switch.
2. Then turn off the transmitter power switch.
If the power switches are turned off in the opposite order, the model may unexpectedly run out of control and cause a
very dangerous situation.
When making adjustments to the model, do so with the engine not running or the motor discon-
j
nected.
You may unexpectedly lose control and create a dangerous situation.
For Your Safety As Well As That Of Others
9
For Your Safety As Well As That Of Others
n
Caution
(Fail safe function)
Before running (cruising), check the fail safe function.
j
Check Method; Before starting the engine, check the fail safe function as follows:
1) Turn on the transmitter and receiver power switches.
2) Wait at least one minute, then turn off the transmitter power switch. (The transmitter automatically transfers the fail
safe data to the receiver every minute.)
3) Check if the fail safe function moves the servos to the preset position when reception fails.
The fail safe function is a safety feature that minimizes set damage by moving the servos to a preset position when
reception fails. However, if set to a dangerous position, it has the opposite effect. When the reverse function was
used to change the operating direction of a servo, the fail safe function must be reset.
Setting example: Throttle idle or brake position
NiMH / NiCd Battery Handling Precautions
(Only when NiMH/NiCd batteries are used)
Warning
n
Never plug the charger into an outlet of other than the indicated voltage.
l
Plugging the charger into the wrong outlet could result in an explosion or fire.
Never insert or remove the charger while your hands are wet.
l
You may get an electric shock.
Do not use the transmitter's battery, HT5F1700B, as the receiver's battery.
l
Since the transmitter's battery has an overload protection circuit, the output power will be shut down when the high current load is applied. This may result in runaway or fatal crash.
Always check to be sure your batteries have been charged prior to operating the model.
j
Should the battery go dead while the model is operating, loss of control will occur and create a very dangerous situation.
To recharge the transmitter battery, use the special charger made for this purpose.
j
Overcharging could cause the battery to overheat, leak or explode. This may lead to fire, burns, loss of sight and many
other types of injuries.
n
Caution
Do not use commercial AA size NiCd and NiMH batteries.
l
Quick charging may cause the battery contacts to overheat and damage the battery holder.
Do not short circuit the battery terminals.
l
A short circuit across the battery terminals may cause abnormal heating, fire and burns.
Do not drop the battery or expose it to strong shocks or vibrations.
l
The battery may short circuit and overheat; electrolyte may leak out and cause burns or chemical damage.
When the model is not being used, always remove or disconnect the battery.
j
Leaving the battery connected could create a dangerous situation if someone accidentally turns on the receiver power
switch. Loss of control could occur.
10
Always keep the charger disconnected from the outlet while it is not in use.
j
Storage and Disposal Precautions
Warning
n
Do not leave the radio system or models within the reach of small children.
l
A small child may accidentally operate the system. This could cause a dangerous situation and injuries. Ni-Cd batteries
can be very dangerous when mishandled and cause chemical damage.
Do not throw NiMH/NiCd batteries into a fire. Do not expose batteries to extreme heat. Also do
l
not disassemble or modify a battery pack.
Overheating and breakage will cause the electrolyte to leak from the cells and cause skin burns, loss of sight, and other
injuries.
When the system will not be used for any length of time, store the system with HT5F1700B batter-
j
ies in a discharged state. Be sure to recharge the batteries prior to the next time the system is used.
If the batteries are repeatedly recharged in a slightly discharged state, the memory effect of the Ni-MH/Ni-Cd battery
may considerably reduce the capacity . A reduction in operating time will occur even when the batteries are charged for
the recommended time. (After discharge to 1cell E.V.=1V)
<NiMH/NiCd Battery Electrolyte>
The electrolyte in NiCd/NiMH batteries is a strong alkali. Should you get even the smallest amount of the electrolyte in
your eyes, DO NOT RUB. Wash immediately with water, and seek medical attention at once. The electrolyte can cause
blindness. If electrolyte comes in contact with your skin or clothes, wash with water immediately.
Warning
n
Do not store your R/C system in the following places.
l
- Where it is extremely hot or cold.
- Where the system will be exposed to direct sunlight.
- Where the humidity is high.
- Where vibration is prevalent.
- Where dust is prevalent.
- Where the system would be exposed to steam and condensation.
Storing your R/C system under adverse conditions could cause deformation and numerous problems with operation.
If the system will not be used
j
for a long period of time, remove the batteries from the
transmitter and model and
store in a cool, dry place.
If the batteries are left in the transmitter, electrolyte may leak and damage the transmitter. This applies to
the model also. Remove the batteries
from it also to prevent damage.
<NiMH/NiCd/Li-ion Battery Recycling>
A used battery is a valuable resource. Insulate the battery terminals and dispose of the battery by taking it to a battery recycling center.
Other Precautions
n
Caution
Do not expose plastic parts to fuel, motor spray, waste oil or exhaust.
l
The fuel, motor spray, waste oil and exhaust will penetrate and damage the plastic.
Always use only genuine Futaba transmitters, receivers, servos, ESCs (electronic speed con-
j
trols), NiMH/NiCd batteries and other optional accessories.
Futaba will not be responsible for problems caused by the use of other than genuine Futaba parts. Use the parts specified in the instruction manual and catalog.
For Your Safety As Well As That Of Others
11
Before Using
Before Using
Features
-2.4GHzSS (Spread Spectrum) radio communication system
Frequency channel setting is unnecessary: Channel shifting takes place within the 2.4GHz
band automatically. This system minimizes the interference from other 2.4GHz systems.
-Model memory for 40 models
Model names can use up to 10 letters, numbers, and symbols, so that logical names may be
used. A model memory with different setups can be created by using the model copy function.
- Menu Selection
The setup screens are called from menu screens. The menu screen can be selected from
among 2 levels (LEVEL1/LEVEL2).
-Brake mixing for large cars (BRAKE)
Brake mixing of the front and rear wheels of 1/5GP and other large cars can be adjusted
independently.
-4WS Mixes (4WS MIX)
This function can be used with crawlers and other 4WS type vehicles.
-Anti-skid braking system (A.B.S)
This function applies the brakes so that the tires of gasoline engine cars, etc. do not lose
their grip on the road even when braking at corners.
-Throttle acceleration (ACCFW/ACCBK)
Gasoline engine cars have a time lag before the clutch and brakes become effective.
The throttle acceleration function reduces this time lag.
-Throttle speed (SPEED)
Sudden trigger operation on a slippery road surface will only cause the tires to spin and the
model to not accelerate smoothly. By setting the throttle speed function, operation can be
performed smoothly and easily. It also suppresses battery consumption.
-Steering speed (SPEED)
When you sense that the steering servo is too fast, etc., the servo operating speed (direction
that suppresses the maximum speed) can be adjusted.
12
-Racing timer (TIMER)
The lap timer can record 100 lap times and total time. The timer can also be started automatically by trigger operation. The race time and audible alarm can be set.
Re-/fueling time are indicated by an audible alarm. An up timer is also provided.
-Digital trim
The current trim position is displayed on the LCD screen. The operating amount of 1 step
can also be adjusted.
Trim operation has no effect on the maximum travel of the steering and throttle servos.
-Function select trim/ dial function (TRIM DIAL)
This function assigns functions to dials (digital trim, digital dial). The step amount and
operating direction can also be adjusted. Trim positioning at each model call is unnecessary
because all the dials are digital.
-Function select switch function (SWTCH)
This function assigns functions to 2 switches. The operating direction can also be set.
-ESC-Link function (MC-LINK)
This is a dedicated function which allows setting of the contents of the Link software which
makes possible Futaba speed controller (ESC), MC950CR, MC850C, MC851C, MC602C,
MC402CR, etc. variable frequency and other data changes by T4PL.
Before Using
-Trigger position can be changed
The position of the throttle trigger can be moved forward and backward.
-Tension adjustment function
The tension of the steering wheel & throttle trigger springs can be adjusted from the outside.
-Mechanical ATL Adjustment
Make this adjustment when you want to decrease the total travel of the brake (push) side of
the throttle trigger.
-Display switch
Display switch allows function setup without transmitting.
13
Set Contents
After opening the box, first check if the contents conform to the following. The contents
depend on the set as shown below.
Before Using
Transmitter
ReceiverR2104GF
T4PL
Dry battery holder
*Installed in transmitter.
Miscellaneous
Receiver switch
Mini screwdriver
* It is used for R2104GF.
Instruction manual
- If any of the set contents are missing, or you have any questions, please contact
your dealer.
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Caution
When using the T4PL in the high speed (HIGH) mode, always use it under the following condi-
j
tions:
Servos :Futaba digital servo (including BLS Series brushless servos)
Receiver’s battery :
Transmitter mode :"HIGH" mode (See page 42 for setting method.)
Under other conditions, the set will not operate, or the specified performance will not be displayed even if it operates.
In addition, it may cause servo trouble. Futaba will not be responsible for damage, etc. caused by combination with the
products of other companies.
In addition, the FSU Fail Safe Unit cannot be used because the system is different. Use the fail safe function of the
transmitter.
Matched to the ratings of the receiver and connected digital servo (dry cell battery cannot be used).
14
When using analog servos, always switch the T4PL servo response to the "NORM" mode.
j
Transmitter mode :"NORM" mode (See page 42 for setting method.)
Receiver’s battery :
The set cannot operate in the "HIGH" mode. Operation in this mode will cause trouble with the servos and other equipment.
Digital servos (including BLS Series brushless servos) can also be used in the "NORM" mode.
Always use only genuine Futaba transmitters, receivers, servos, ESCs (electronic speed con-
j
trols), NiMH, NiCd, Li-ion batteries and other optional accessories.
Futaba will not be responsible for problems caused by the use of other than Futaba genuine parts. Use the parts specified in the instruction manual and catalog.
Matched to the ratings of the receiver and connected digital servo (dry cell battery cannot be used).
Nomenclature
Transmitter T4PL
Antenna
LCD screen
Power&Display switch
LED
Edit buttons
Slide switch (SW2.SLD)
(default CH3)
Digital Trim 3 (DT3)
(default dual rate)
Digital Trim 4 (DT4)
(default ATL)
Digital Trim1 (DT1)
(default steering trim)
Digital Dial 1 (DL1)
(default CH4)
Steering wheel
Digital Trim 2 (DT2)
(default throttle trim)
Push switch (SW1.PSH)
Grip Handle
Before Using
Throttle trigger
Battery cover
*The switches, dial, and trimmers in the figure are shown in the initial setting position.
Wheel tension
adjusting screw
Trigger slide
adjusting screw
Mechanical ATL
adjusting screw
Trigger tension
adjusting screw
15
Battery Replacement Method (4 AA Size Batteries)
Before Using
Load the four batteries in accordance with the
Battery cover
polarity markings on the battery holder.
Battery Replacement Method
1
Remove the battery cover from the transmit-
ter by sliding it in the direction of the arrow in
the figure.
2
Remove the used batteries.
3
Load the new AA size batteries. Pay very
close attention to the polarity markings and
reinsert accordingly.
4
Slide the battery cover back onto the case.
Check:Disposal of the Dry Cell Batteries:
Turn the power switch on the transmitter to
the ON position. Check the battery voltage
display on the LCD screen.If the voltage is
low, check the batteries for insufficient contact in the case or incorrect battery polarity.
Slide battery cover while pressing here.
The method to dispose of used dry
cell batteries depends on the area in
which you reside. Dispose of the batteries in accordance with the regulations for your area.
Caution
n
Do not use commercial AA size NiCd and NiMH
l
batteries.
Quick charging may cause the
battery contacts to overheat and
damage the battery holder.
Insert the batteries in the correct
j
polarity.
If the polarity is incorrect, the transmitter
may be damaged.
When the transmitter is not in use,
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remove the batteries.
If the battery electrolyte leaks, wipe off the
case and contacts.
Low Battery Alarm
If the transmitter battery voltage drops to 5.0V(when using dry cell battery:
4.2V) or less, an audible alarm will sound and "BATTERY LOW VOLTAGE" will be displayed on the LCD screen.
Warning
n
When a low battery alarm is generated, cease operation immediately and
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retrieve the model.
If the battery goes dead while in operation, you will lose control of the model.
16
When using the optional battery
When using an optional rechargeable battery, replace the battery as described below.
-Always use the optional HT5F1700B or FT2F2100B rechargeable battery.
-When the transmitter will not be used for a long time, remove the battery.
-When using the optional HT5F1700B or FT2F2100B (LiFe) battery, always set the battery type "BATT" to "N5/L2". (See page 93 for the battery types).
Battery Replacement Method
1
Refer to the previous description and remove
n
the transmitter battery cover.
2
After removing the dry cell battery box from
the transmitter, disconnect the connector.
3
Insert the connector of the new battery and
load the new battery into the transmitter.
4
Finish by installing the battery cover.
Caution
When closing the battery cover, be
j
careful that the battery cover does
not pinch the battery lead wires.
Shorting of the battery lead wires may lead
to fire and abnormal heating and cause
burns or fire disaster.
Before Using
Charging the battery
Charging method
(Example: When using the HT5F1700B with the special charger)
1
Plug the transmitter cord of the special char-
ger into the charging jack on the rear of the
transmitter.
2
Plug the charger into an AC outlet.
3
Check that the charging LED lights.
The charging time when charging the HT5F1700B battery
with the optional special charger is approximately 15 hours.
However, when the battery has not been used for some time,
repeat charging 2 or 3 times to activate the battery. Charge
the optional FT2F2100B (LiFe) battery with the special charger in accordance with the instruction manual supplied.
Charging jack
AC outlet
Charger
Transmitter charging
LED
To receiver
Ni-Cd battery
When using Futaba CR-2000
The HT5F1700B is 5-cells, so, when charging the
HT5F1700B battery with Futaba CR-2000 charger, you have
to use the RX output side.
Over current protection
The transmitter charging circuit is equipped with an over current protection circuit (1.0A). If the battery is charged with a
quick charger for other than digital proportional R/C sets, it
may not be fully charged.
To transmitter
charging jack
17
Warning
n
Never plug it into an outlet of other than the indicated voltage.
l
Plugging the charger into the wrong outlet could result in an explosion or fire.
Do not insert and remove the charger when your hands are wet.
l
It may cause an electric shock.
Always use the special charger or a quick charger for digital proportional R/C sets to charge a
j
digital proportional R/C set Ni-MH battery.
Overcharging a Ni-MH battery can result in burns, fire, injuries, or loss of sight due to overheating, breakage, or electrolyte leakage.
n
Before Using
Caution
Never try to recharge a dry cell battery.
l
The transmitter may be damaged or the battery electrolyte may leak or the battery may break.
When the charger is not in use, disconnect it from the AC outlet.
j
Do this to prevent accidents and to avoid overheating.
Power & Display Switch
The power switch and display switch of the T4PL are integrated. In the PWR ON mode,
radio waves are transmitted and in the DISP mode, model data, settings can be checked
without transmitting radio waves.
Radio waves are not being
DISP
LED (Red)
transmitted
18
OFF
PWR ON
Radio waves are being transmitted
LED (Blue)
High Voltage Alarm
If a battery exceeding 8V is used with the T4PL, an audible alarm will
sound and "BATTERY HIGH VOLTAGE" will be displayed on the LCD
screen.
Immediately remove the battery because it may cause damage to the T4PL.
Precautions when turning the power switch on and off.
When the data is changed using the edit keys or trim levers, wait at least two seconds before turning off the power. If the power
is turned off within two seconds after the data is changed, the new data will not be written to memory.
Display when power switch is turned on
Power switch turned on
Beep confirmation sound is generated and the
HOME screen shown below appears.
Battery voltage display
Model number
Model name (10 characters)
The current receiver type is
displayed. ("SFH"/"FH")
Racing timer
When the servo response mode is
high speed, "HIGH" is displayed.
Nothing is displayed in the normal
mode.
ST :Steering trim display
TH :Throttle trim display
D/R :Steering D/R display
ATL :Throttle ATL display
Servo operation of each
channel can be checked.
LCD Screen Contrast
The LCD screen contrast can be adjusted. (For more information, see page 93.)
Caution
Do not adjust the contrast so that the LCD is too bright or too dark.
When the display cannot be read due to a temperature change, data cannot be set.
Before Using
Power Off Forgotten Alarm
When the steering wheel, throttle trigger, push switch, or edit button are not operated
for 10 minutes (default), an alarm sounds and "NOT OPERATED FOR A
LONG TIME" is displayed on the LCD screen.
When the steering wheel, throttle trigger, push switch, or edit button are
operated, the alarm is reset. If the system is not to be used, turn off the
power.
The function can be deactivated at the system menu (p.93).
With the center trim feature, trim adjustments have no effect on the maximum
servo travel. This prevents the linkages from binding when adjustments are made.
Grip Lever Operation
(Initial setting: DT3; Steering D/R, DT4; ATL)
Operate the dials by turning them. The current set value is displayed on the LCD screen.
narrower. Adjust the stroke while watching the screw.
Mechanical ATL
adjusting screw
Note:
Once you have changed the mechanical stroke on the brake side, be sure to adjust
the scale of the throttle channel accordingly by using the "Adjuster Function"
(page 97).
Due to this change, you also need to adjust in most cases the travel of the throttle
servo by using "End point Adjuster".
Before Using
Wheel & Trigger Tension Adjustment
Make this adjustment when you want to change the wheel or trigger spring’s tension.
Adjustment
1
Using a 1.5mm hex wrench, adjust
the wheel spring tension by turning
the screw inside the adjusting hole in
the arrow direction.
The adjustment range is up to 7 to 8 turns from the fully tightened (strongest) position. If turned farther than this, the adjusting screw may fall out.
Trigger tension
adjusting screw
21
Trigger Slide Adjustment
The throttle trigger position can be moved forward and backward.
Adjustment
1
Using a 2.5mm hex wrench, loosen the
trigger slide mounting screw by turning it
slightly counterclockwise.
2
Using a 2.5mm hex wrench, turn the trig-
ger slide adjusting screw, and adjust the
trigger slide position within the marked
Before Using
range. When the adjusting screw is turned
clockwise, the trigger slide moves away
from the grip handle.
3
Retighten the mounting screw loosened at
step 1 and fasten the trigger slide.
About Transmitter Antenna and Receiver
About The Transmitter Antenna
Adjust so that the bottom
mark does not exceed
the top marking line.
Trigger slide
mounting screw
Trigger slide adjusting screw
Adjust the antenna vertically
to the ground.
Warning
n
Adjust the antenna vertically to the ground.
j
Otherwise, the operating range may become shorter.
Never hold only the antenna.
l
Hold the grip handle. Otherwise, the antenna may be damaged.
The antenna position can be changed in the range as shown in figures A and B. However, please
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do not apply unnecessary force or shock.
The internal cable may be damaged; thus transmitting distance decreases and it may cause malfunction.
Antenna
AB
Antenna Moving Range
22
Receiver Terminology
Tac t i l e switch / L E D
AntennaCoaxial cable
Connectors
4 :CH4 servo(CH4)
3 :CH3 servo (CH3)
2 :Throttle servo(CH2)
1 :Steering servo(CH1)
B :
Power connector
How to link the transmitter and the receiver
Each transmitter has an individually assigned, unique ID code. In order to start operation, the receiver must be linked with the ID code of the transmitter to which it is being
paired. Once the link is made, the ID code is stored in the receiver and no further linking is necessary unless the receiver needs to be used with another transmitter.
Link procedure
1
Bring the transmitter and the receiver close to each other,
within 20 inches (half meter).
2
Turn on the transmitter.
3
Turn on the receiver.
Before Using
4
Push the tactile switch of the receiver.
When the link is complete, the LED in the receiver changes
to solid green.
Precaution:
If there are many Futaba S-FHSS/FHSS systems turned on in close proximity to the R2104GF, your
receiver might not link to your transmitter. In this case, even if the receiver's LED stays solid green, un-
fortunately the receiver might have established a link to one of other transmitters. This is very dangerous
if you do not notice this situation. In order to avoid the problem, we strongly recommend you to doublecheck whether your receiver is really under control by your transmitter by giving the stick input and then
checking the servo response.
*Please refer to the table below for LED status vs receiver's condition.
LED status vs receiver's condition:
No signal receptionRed : On
Receiving signalsGreen: On
Receiving signals, but ID is unmatched. Green: Blink
*1: LED could be change to red during intermittently during data processing.
n
Warning
After the linking is done, please cycle receiver power and check if the receiver to be linked is re-
j
ally under the control of your transmitter.
Do not perform the linking procedure with motor’s main wire connected or the engine operating
l
as it may result in serious injury.
*1
23
Receiver Installation
Install the R2104GF receiver on the car as follows:
The operating range may become shorter, depending on where the receiver and the antenna are mounted.
WARNING
n
Do not cut or bundle the receiver antenna wire.
l
Do not bend the coaxial cable. It causes damage.
l
Antenna
tube
Before Using
Install the antenna in the higher place as shown in the figure.
j
Put the antenna in the antenna tube to protect it.
j
Keep the antenna as far away from the motor, ESC and other
j
noise sources as you possibly can.
Wrap the receiver with something soft, such as foam rubber, to
j
avoid vibration. If there is a chance of getting wet, put the receiver
in a waterproof bag or balloon.
n
Caution
Always use R2104GF under the following conditions:
j
Battery :Power requirement Rated voltage 4.8~7.4V (dry cell battery cannot be used) / 3.5 to 8.4V useable
Matched to the ratings of the receiver and connected servo.
RX Type :"SFH" or "FH" (See p.42 for setting method.)
Transmitter mode-"HIGH" mode :Futaba digital servo (See p.42 for setting method.)
Transmitter mode-"NORM" mode :Futaba all servo (See p.42 for setting method.)
Under other conditions, the set will not operate, or the specified performance will not be displayed even if it operates. In
addition, it may cause trouble with servos and other equipment. Futaba will not be responsible for damage, etc. caused
by combination with the products of other companies.
Antenna
Coaxial
cable
R2104GF
24
Transmitter mode setting
Set the transmitter to the "HIGH" mode or "NORM" mode. See page 42 for a description of the
setting method.
However, digital servos (including BLS Series brushless servo) can only be used in the HIGH mode.
Note:
When the power is turned on, whether the receiver is in the "HIGH" or "NORM" mode the R2104GF operates in that mode until
the power is turned off. When the transmitter mode is changed, operation becomes possible when the receiver power is turned on
again.
Installation
Receiver and Servo Connections
Connect the receiver and servos as shown below. Connect and install the receiver and
servos in accordance with "Installation Safety Precautions" on the next page.
The figure shown below is an example. The method of connecting the motor controller
to the motor and battery depends on the motor controller used. Purchase the motor controller and servos separately. The receiver also depends on the set.
Installation When An Electronic Speed Control Is Used
Installation For Gas Powered Models
CH3
CH4
Receiver
CH1
B/C
CH2
Installation
Steering servo
Throttle servo
CH3 servo
To Battery
Switch
CH4 servo
25
Installation
Installation Safety Precautions
Warning
n
Receiver (receiver antenna)
Do not cut or bundle the receiver antenna wire.
l
Do not bundle the receiver antenna wire together with the motor controller lead wire.
l
Keep the receiver antenna wire at least 1cm away from motor, battery, and other wiring carrying heavy current.
l
Install the receiver antenna holder as closely as possible to the receiver.
j
If the antenna wire is cut, bundled, or routed near a noise source, the receiving sensitivity will drop, the running (sailing)
range will decrease, and you may lose control of the model.
*Noise is transmitted through metal, carbon, and other conductive material, so keep the receiver antenna wire away from such parts.
Antenna
Battery
Install the receiver as far away as possible from the
battery, motor controller, motor, silicon cord and
other noise sources. Keep it away from the antenna
wire, in particular.
Receiver vibration-proofing / waterproofing
(Car)
Vibration-proof the receiver by wrapping it in foam rubber or other vibration-absorbing material
j
and mount it with thick double-sided tape.
When using the receiver holder supplied with the model kit, mount the holder to the chassis
j
through a rubber grommet.
(Boat)
Vibration-proof the receiver by wrapping it in foam rubber or other vibration-absorbing material.
j
Also waterproof the receiver by sealing it in a plastic bag.
If the receiver is exposed to strong vibration and shock, it will operate erroneously due to the invasion of water drops
and you may lose control of the model.
Foam rubber, etc.
Screw
Mechanical plate
Wrap the receiver in foam rubber or other
vibration-absorbing material. Do not use
hard material. Hard material does not
have a vibration-proofing effect.
Thick doublesided tape
Nut (as required)
Receiver holder
When using the receiver holder supplied with the kit, install the receiver
through a rubber grommet.
Damper
Mechanical plate
When mounting the receiver with double-sided tape,
do not use a stiff tape. Stiff tape does not have a vibration-proofing effect.
26
Warning
n
Connector Connections
Be sure the receiver, servo, battery and connectors are fully and firmly connected.
j
If vibration from the model causes a connector to work loose while the model is in operation, you may lose control .
Servo Installation
When you install the servos, always use the rubber grommets provided in servo hardware bags.
j
Mount the servos so they do not directly come in contact with the mount.
If the servo case comes in direct contact with the mount, vibration will be directly transmitted to the servo.
If this condition continues for a long time, the servo may be damaged and control will be lost.
Screw
Damper
Eyelet
Mechanical plate
Nut (as required)
When installing the servo, always install the accessory
rubber grommet and grommet flush against the servo.
(or)
A vibration-damping effect is not obtained even
if the rubber grommet and grommet are not installed correctly.
Servo Throw
Operate each servo over its full stroke and be sure the linkage does not bind or is loose.
j
The continuous application of unreasonable force to a servo may cause damage and excessive battery drain.
Caution!
A howling noise indicates
that the steering servo is
improperly set.
Adjust the throttle servo so that unreasonable force is
not applied when the engine carburetor is fully open,
Decide the EPA value at the
contact point.
Adjust the steering servo so that unreasonable force is not applied to the servo by the
chassis at maximum servo travel.
fully closed, and the brakes are applied fully.
If the brakes overheat while running, their ability to
function properly decreases. Before running, adjust the
suitable maximum servo travel so that unreasonable
force is not applied even when the servo travel is increased while running.
Installation
27
Installation
Warning
n
Electronic Speed Control
Install the heat sinks where they will not come in contact with aluminum, carbon fiber or other
j
parts that conduct electricity.
If the FET Amp (Electronic speed control) heat sinks touch other materials that conduct electricity a short circuit could
occur. This could result in loss of control and damage to the system.
Motor Noise Suppression
Always install capacitors to suppress noise when electric motors are used.
j
If capacitors are not properly installed you could experience erratic operation and reduced range as well as loss of control.
123
Motors with no suppressor capacitors, or inadequate suppression, may cause the receiver to mal-
"+" side
"-" side
Schottky diode
function. Always solder the capacitors supplied to
your motor.
The Schottky diode improves the efficiency of the
speed control / motor combination and provides
extra protection to the brake FETs. The white ring
must always face the positive side.
Other Noise Suppression Methods
Be sure there are no metal parts in your model which under vibration can come in contact with
j
other metal parts.
Metal to metal contacts under vibration will emit a high frequency noise that will affect the receiver's performance. You
could experience erratic operation and reduced range as well as loss of control.
28
Initial Set-Up
Preparations (Transmitter)
Before setting the Transmitter functions, check and set items 1 to 4 below.
(Display when power switch turned on)
When the power switch is turned on, the currently selected model number is displayed.
Check if this number is the model number you want to set-up. To change the model
number, use the Model Select function (See page 39).
Turn on the transmitter power.
(Start screen)
The battery voltage is
displayed.
The model number is
displayed.
1.Rx Type Check
The T4PL transmitter can use both FHSS 2.4GHz system and increased response SFHSS 2.4GHz system receivers. The R2104GF receiver supplied with the T4PL set can
be used in both the FHSS type and S-FHSS type modes by automatic recognition. As
the FHSS type mode cannot be used when the FHSS 2.4GHz system R603GF/R2004GF
receiver is used, check the setting. If the setting is incorrect, change it using "RX
MODE" (P42). Which RX type is set can be checked with the HOME screen.
When FHSS
"FH""SFH"
When S-FHSS
Initial Set-Up
29
2. Servo Response Mode Check
When the RX type is set to S-FHSS 2.4GHz (SFH), the servo response mode can be
set to the high speed mode (HIGH). However, check if the servos used are compatible.
When using digital servos (including BLS Series
brushless servos), either "HIGH" or "NORM" can
HIGH" is displayed for high
be used. Since "HIGH" cannot be used with other
analog servos, the servo response mode must be
"
speed type and nothing is displayed for normal type.
set to "NORM". If the setting is incorrect, change
it using "RX MODE" (P42). When the RX type is
set to FHSS 2.4GHz (FH) the high speed mode
cannot be selected
3. Throttle Mode Check
The throttle servo travel can be set to 5:5 or 7:3 for throttle trigger
operation as required by the throttle mode function (page 78).
Initial Set-Up
4. Trims Initial Set-Up
- Steering trim (DT1) check
On the initial set-up, steering trim is assigned to the DT1 trim lever above the steering wheel. Operate the lever and make sure the
marker moves on the ST graph. If default has been changed, test
steering trim in its new location. After checking the trim, set the
trim display to the center (N) position.
- Throttle trim (DT2) check
On the initial set-up, throttle trim is assigned to the DT2 trim lever
on the left side of the steering wheel. Operate the lever and make
sure the marker moves on the TH graph. If the default has been
changed, test the throttle trim in its new location. After checking
the trim, set the trim display to the center (N) position.
Throttle trim (DT2)
F5/B5 or F7/B3
Steering trim
Throttle trim
Steering trim (DT1)
30
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