FLIGHT LINE B-24 LIBERATOR User manual

EN
1~11
中12~22
WINGSPAN:2000MM(78.7in.)
LENGTH:1230MM(48.4in.)
WEIGHT:2190G (W/O BATTERY)
U S E R M A N UA L
B-24 LIBERATOR

1B-24 LIBERATOR
Iten No.:
The famed B-24 Liberator is one of the most recognizable WWII aircraft of all time. Serving in every theater of
that global conflict, the B-24 fought to bring its brave crews home through unimaginable danger. With humility and
reverence, FlightLineRC and Motion RC are proud to introduce the world’s first foam electric PNP B-24 Liberator, in
remembrance of the crews who gave the ultimate sacrifice and those who carry on its memory.
The FlightLineRC B-24 is approximately 1/16 scale, with a 2000mm wingspan and 1230mm length. Constructed from
EPO foam and reinforced with integrated aluminum, carbon, and plastic structures, the B-24 delivers the ultimate all
around experience for pilots seeking the ultimate foam PNP bomber replica. A magnetic nose section allows owners to
swap between two B-24 variants, the -D (”Greenhouse” nose), and the -J (”Emerson turret” nose). The Upper Turret on both
variants and the Nose Turret on the -J variant can be panned with an optional servo. Steerable tillers are pre-installed,
including special provisions to fit FPV cameras inside.
The FlightLineRC B-24 uses four 3530-860KV brushless outrunner motors and four 30A ESCs. A quick
disconnect ribbon wire harness consolidates wiring into a central circuit board in the fuselage. The recommended
pair of 4s 14.8V 2800-4000mAh lipo batteries 2pcs can power the aircraft in excess of 110kph/70mph, for 4-10
minutes based on a pilot’s throttle management. The outboard motor pair and inboard motor pair are run from
separate flight batteries, allowing for powered landings in the event of one battery failing. A 70mm tall nose wheel
and 85mm tail main wheels provide stable operation grass runways, and optional suspension struts are available.
Assembly is comprised of only 12 screws and gluing on external details such as antennas.
Catalog
Pushrod instructions
Control board connection diagram
Battery Size
Center of Gravity
Servo Direction
Motor Specifications
X-Mount & Motor shaft
Power system Installation..............................
Control Direction Test
Dual Rates and Flight Precautions................
5
6
7
7
8
8
9
9
10
11
Introduction
Basic Product Information
Package List
PNP Assembly Instructions
Wire Pull-Through Tool Instruction
Horizontal Stabilizer/Vertical Stabilizer Assembly..
Propeller Assembly and Installation....................................
Main Wing Installation .......................................................
Magnetic nose cone Installation.........................................
Scale Accessories Installation............................................
1
2
2
3
3
3
4
4
5
1. This is not a toy! Operators should have some basic experience. Beginners should operate only under the guidance of a professional
instructor.
2. Before beginning assembly, please read through the instructions and carefully follow them throughout the build.
3. Freewing and it's vendors will not be held responsible for any losses due to improper assembly and operation.
4. Model airplane operators must be at least 14 years of age.
5. This airplane is made of EPO foam material, covered with surface spray paint. Don't use chemicals to clean as it may cause damage.
6. You should avoid flying in areas such as public places, areas with high voltage power lines, nearby highways, airports or in other areas
where laws and regulations clearly prohibit flight.
7. Do not fly in bad weather conditions, including thunderstorms, snow, etc...
8. Lipo batteries should be properly stored in a fire proof container and be kept at a minimum of 2M distance away from flammable or
explosive materials.
9. Damaged or scrap batteries must be properly discharged before disposal or recycling to avoid spontaneous combustion and fire.
10. At the Flying Field, properly dispose of any waste you have created, don't leave or burn your waste.. Ensure that your throttle is in the
low position and that your radio is turned on before connecting the Lipo battery.
11. Before connecting the batteries, make sure your transmitter is powered up, with the correct channel selected and the throttle in the
lowest position. If you have a kill switch, engage it as well.
12. Do not try to catch the airplane while in flight. Do not touch the airplane until it comes to a complete stop and the propellers stop
turning.

Basic product information
1230mm(48.4in.)
Wing loading 100g/dm²：
Wing ：35dm² area
Motor: 3530-860KV
brushless outrunner motor (4pcs)
r-Blade P opeller : 3 9.5x7
(4Piecs Standard/Reverse)
ESC : 30A（4pcs）
Servo : 9g digital metal gear servo (9pcs)
Flight speed 110KPH/70MPH：
Empty Weight : 2910g(without battery)
5400gPull:
Material：EPO
Aileron: Yes
Flaps: Yes
Elevator: Yes
Rudder: Yes
Landing gear: Retractable, Suspension
Scale Pilot figure
Battery: 4S 2800-4000mAh (2pcs)
2000mm(78.7in.)
2
B-24 LIBERATOR
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Package list
No. Name No. Name
1
2
3
4
5
6
7
8
9
10
11
12
Glue & Non-slip mat
Carbon tube & Screw
Manual & Decals
PNP ARF Plus Airframe PNP ARF Plus Airframe
Fuselage
Main wing
Horizontal tail
Vertical tail
Pre-installed all
electronic parts
Pre-installed all
electronic parts
Pre-installed all
electronic parts
Pre-installed all
electronic parts
Pre-installed
servo
Pre-installed
servo
Pre-installed
servo
Pre-installed
servo
No electronic
equipment
No electronic
equipment
No electronic
equipment
No electronic
equipment
Propeller & Spinner
Nose Turret & Nose
Scale Accessories
ESC wire
Linkage Set
The parameters stated here are derived from test results using our accessories.
If you use other accessories, the test results will differ. We cannot provide
technical support if you have a problem when using other accessories.
Different types of kits will come with specific parts. Please refer to the list to confirm your kit's contents.

4
Step
2
Step
E
F
A-
B-
C-
D-
E-
F-
Rudder
Elevator
Servo cable
Elevator wire trough
Screw (PA3x8 4pcs)
Screw (PA3x8 4pcs)
Referring to the photo:
1.Attach the propeller to the propeller shaft。
2.Make sure that the propellers are installed on the correct
side. Refer to the photo above.
A-
B-
C-
D-
E-
F-
G-
Screw (PM2.5x6 4pcs)
Spinner
Screw nut
Washer
Propeller hub, front (A)
Scale propeller
Propeller B hub, front (B)
3B-24 LIBERATOR
Iten No.:
1
Step
As shown in the photo below:
1.Insert the left and right rudder servo cables into the trough of the
horizontal stabilizer, and pull the cables through the gap.
2.Secure the left and right vertical stabilizers to the horizontal stabilizer
with 4 PA3x8 screws.
3.As shown in the photo, bundle the rudder/elevator cables and use the
Wire Pull-Through Tool to feed the cables to the battery compartment.
4.Finally, install the horizontal stabilizer to the fuselage
and secure it with 4 PA3x8 screws. A
B
C
D
Steel wire tool
Battery compartment
3
Step
Elevator and Rudder servo cables
A
B
C
D
E
F
G
1
Step
2
Step
Our tests show that excessively long servo extension lines increase the risk of poor connections that can lead
to servo brown outs or failure, causing accidents during flight. Instead, this kit contains a steel wire that can
be used to pull the main wing/elevator and rudder servo wires through the airplane to the battery compartment
PNP Assembly Instructions
Wire Pull-Through Tool Instructions
Horizontal Stabilizer/Vertical Stabilizer Assembly
Propeller Assembly and Installation

4
B-24 LIBERATOR
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2
Step
3
Step
1
Step
Carbon tube A
(Ø10x500mm)
C Barbon tube
(Ø8x360mm)
3
3
1
6
5
1.Insert carbon tube A and B into the fuselage.
2.Pull the ESC wire and Ribbon wire through the hole.
3.Slide the left and right main wings to the fuselage.
4.Use 4 PWM4x8 screws to secure the main wings.
Screw
(PWM4x8 4pcs)
Main wing wire hole
A
B
C
C1 C2
B1
(PNP includes two optional forward nose sections for the B-24-D (”Greenhouse”) and B-24-J (”Emerson Turret”)
A-
B-
C-
Greenhouse for -D Variant
Antennas
Gun Barrels
I
Magnet
A
B
C
D
E
F
G
H
PNP Assembly Instructions
Main Wing Installation
ESC wire & Ribbon wire
Magnet
Nose Section -J Installation
A-
B-
C-
D-
E-
F -
G-
H-
I -
Nose Turret A
Nose Turret B
Nose Turret Base
B-24-J
Variant Foam Nose
Washer
Tiller
Screw (PA2.3x8)
Lower Windshield
Gun Barrels
Nose Section -D Installation
Throttle
Throttle
Aileron
Flap
Landing gear

5B-24 LIBERATOR
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A-
B-
C-
D-
E-
F-
G-
H -
rretUpper Tu
Upper Turret Base
Washer
Tiller
Screw (PA2.3x8)
Antenna
Exhaust Pipe
Gun Barrels
F
2
Step
1
Step
A
B
C
DE
Nose gear steering pushrod length
Pushrod diameter Ø1.2mm
45mm
(1-3/4")
33mm
(1-5/16")
1
2
3
1
2
3
41.5mm
(1-5/8")
1
2
3
41.5mm
(1-5/8")
1
2
3
53mm
(2-1/16")
3
Step 4
Step 5
Step 6 Step
PNP Assembly Instructions
Scale Accessories Installation
Pushrod Length Setup
Nose gear steering pushrod mounting hole
Flap pushrod length Flap pushrod mounting hole
Aileron pushrod mounting hole
Aileron pushrod length
Elevator pushrod length Elevator pushrod mounting hole
Rudder pushrod length Rudder pushrod mounting hole
Pushrod diameter Ø1.2mm
Pushrod diameter Ø1.2mm
Pushrod diameter Ø1.2mm
Pushrod diameter Ø1.2mm
G
H
H1
H2
3
1
4
2
3
1
4
2
3
1
4
2
3
1
4
2

Control board connection diagram
The B-24 uses a convenient flexible ribbon wire harness to consolidate wiring. Refer to the photo for the proper wiring configuration.
6
B-24 LIBERATOR
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Nose Landing gear door servo
Nose Landing gear retract
Nose steering servo
Rudder servo
Elevator servo
B-24 Liberator
Servo lnput
Receiver
5
4
3
2
1
6
FLAP
GEAR
R U D
T H R
E L E
A I L
GEAR
GEAR DOOR
Nose Steering
R U D
E L E
Throttle
Throttle
Aileron
Flap
Landing gear
3
3
1
6
5
3
1
6
5
3
Receiver
PNP Assembly Instructions
Main wing control board(Right) Main wing control board(Left)
Connect to the Aileron channel in the receiver
Connect to the Elevator channel in the receiver
Connect to the Throttle channel in the receiver
Connect to the Rudder channel in the receiver
Connect to the landing Gear channel in the receiver
Connect to the Flap channel in the receiver

Pull the latch back
and open the cockpit.
Before connecting the batteries to the ESC for the first time,
please remove the propellers, position the model on a stand
above the ground. and switch on the transmitter power. Ensure
the throttle stick is in the lowest position. Engage the kill switch if
you have one assigned
After you have programmed your radio transmitter, reinstall the propellers and carefully verify their correct rotation. With the aircraft level, the
uppermost tips of all the propellers should rotate inward, toward the fuselage. The stock PNP configuration assigns the inboard motors to one
flight battery, and the outboard motors to the second flight battery. If one battery fails, the model can be landed immediately on the remaining
two engines flown at full power. Before all flights, ensure all areas forward of the propellers are clear to avoid injury.
We recommend the following LiPo batteries:
4S 14.8V 2800mAh ~ 4S 14.8V 4000mAh (x2)
Discharge rate of C> 35C
Use rubberized non-slip tape
or hook-and-loop tape
Battery cabin size:
L=160 W=98 H=68(mm)
7B-24 LIBERATOR
Iten No.:
Cockpit
Battery A
Battery B
Velcro
Battery tray
PNP Assembly Instructions
Battery Size
76mm
(3")
Center of Gravity
”
- Depending on the capacity and weight of your choosen
flight batteries, move the battery forward or backward to
adjust the Center of Gravity.
- If you cannot obtain the recommended CG by moving the
battery to a suitable location, you can also install a suitable
counterweight to achieve correct CG. However, with the
recommended battery size, a counterweight is not
required. We recommend flying without unnecessary
counterweight.
Correct Center of Gravity (
”
CG”) is critical for enabling safe stable flight performance and responsive control. Please refer to the
following CG diagram to adjust your aircraft’s Center of Gravity. This CG has been flight tested 200+ times for your safety.

2
4
3
5
6
7
8
9
1
8
B-24 LIBERATOR
Iten No.:
Note: If you choose not to use the factory servos, the servos you
choose may be a different size. Use the following chart to ensure
that the servos you choose are compatible with this airplane.
Position
前轮转向
Aileron(L)
Aileron(R)
Flap(L)
Flap(R)
Elevator(L)
Elevator(R)
Rudder(L)
Rudder(R)
No. Pos./Rev. Cable length
1
2
3
4
5
6
7
8
9
Positive
Positive
Positive
Positive
Positive
Positive
Positive
Positive
Positive
400mm
750mm
750mm
250mm
250mm
850mm
850mm
950mm
950mm
Servo regulation
9g Digital-MG
9g Digital-MG
9g Digital-MG
9g Digital-MG
9g Digital-MG
9g Digital-MG
9g Digital-MG
9g Digital-MG
9g Digital-MG
4-Ø3,2
41.5
41.5
51.5
51.5
11
7.9
M6
M2.5
4
Ø35
33
38
53
79
9.0
26
Ø6
3530-860KV
Units:mm
860RPM/V 14.8 1350 106
3-Blade 9.5x7
30A
Pre-Installed Component Overview
Servo Direction
Nose gear
steering servo
Motor Specifications
A servo or reversed servo is defined as follows:
When the servo input signal changes from
1000ųs to 2000ųs, if the servo arm rotates
clockwise, it's a positive servo.
If it rotates counter clockwise, it's a
reversed servo.

9B-24 LIBERATOR
Iten No.:
1
Step 2 Step
3
Step 4 Step
Refer to the left diagrams 1 and
2 to install the ESC's and
Motors.
AB
C
D
E
F
G
A-
B-
C-
D-
E-
F-
G-
ESC
Motor
Screws (PA3x15 16pcs)
Engine cowl
Screws (PA2.3x6 12pcs)
Engine Pod cover
Screws (PA2.3x6 8pcs)
3.0
Ø12.0
Ø3.2
Ø3.2
51.5
41.5
25.0
41.5 25.0
46
41
26
9.0
4
Ø6
6
M6 External thread
M2.5 Internal thread
20
20
16
7.9
Ø4.7
Ø2.6
Ø26
Units:mm
A-
B-
C-
D-
E-
Screws (PM3x6)
Motor Mount
3530-860KV out-runner motor
Prop shaft adapter
Cup head screws (M2.5x6)
ABC
D
E
X-Shaped Motor Mount & Propeller Shaft
Pre-Installed Component Overview
Power system Installation
Refer to the left diagrams 3 and
4 to install the dummy radial engines
and engine pod covers.

10
B-24 LIBERATOR
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Control Setup Instructions
Control Direction Test
After the build is complete but with the propellers removed, power up the radio and connect two fully charged
batteries to the ESC's. Use the radio to ensure correct control direction.
Aileron
Elevator
Rudder
Flaps
Stick Left Stick Right
Stick Back Stick Forward
Stick Left Stick Right
Flaps down

H1
H1
H2
H1
H2
H1
H2
Low Rate
High Rate
IMPORTANT：
Throttle Calibration
Before your first flight, remove the propellers and calibrate your ESC pairs and verify that all four motors are synchronized.
Reinstall the propellers and taxi test the model to check for synchronous thrust.
Flap Mixing and Tips
1 - A Flap-to-Elevator Mix is required to maintain level flight when the flaps are deployed. With 13mm of flaps(Low Rate),
mix 1.5mm of Down Elevator. With 29mm of flaps (High Rate), mix 3mm to Down Elevator.
2 - When flaps are deployed, do not advance the throttle very quickly. The B-24 is intended to be flown as a scale bomber,
with moderate throttle advance. Add rudder input to flatten turns for more scale appearance.
Elevator Neutral Position
1. Before your first flight, mechanically set the Elevator's Neutral Position to 1.5mm Up.
11 B-24 LIBERATOR
Iten No.:
Control Setup Instructions
Dual Rates
With reference to our Flight Test data, we recommend the following parameters to set the Aileron/
Elevator Rate. Program your preferred Exponential % in your radio transmitter. We recommend using High Rates
for the first flight, and switching to Low Rates if you desire a lower sensitivity. On successive flights, adjust the
Rates and Expo to suit your preference.
Aileron Flaps
Elevator Rudder
H1/H2 20mm/20mm
D/R Rate：85%
H1/H2 22mm/22mm
D/R Rate：100%
H1/H2 18mm/18mm
D/R Rate：75%
H1/H2 23mm/23mm
D/R Rate：100%
Aileron(measured closest
to the fuselage)
Elevator(measured closest
to the fuselage)
H1/H2 15mm/15mm
D/R Rate：80%
H1/H2 19mm/19mm
D/R Rate：100%
Rudder(Measured
from the bottom)
H1 13mm
H1 29mm
Flaps

当您按前面的步骤组装好飞机后，在飞行前，我们需要用一块充饱电的电池，连接到电调。用遥控
器测试每个舵面的工作情况，检查是否正常！
副 翼
副翼摇杆
向左运动
副翼摇杆
向右运动
升降舵
升降摇杆
向下运动
升降摇杆
向上运动
方向舵
方向摇杆
向右运动
方向摇杆
向左运动
襟 翼
襟翼放下
舵面测试
中文版中文版
PNP 组装说明
21 B-24 LIBERATOR
Iten No.:

根据我们的测试经验，我们认为，按以下参数来设置大小舵量，将有助于飞行。小舵量
飞机的操纵会笨拙些，大舵量飞机的操纵会灵敏些，我们建议初次飞行使用大舵量起飞，然
后视操纵习惯选用小舵量或者大舵量飞行。
襟 翼
H1
方向舵
H1
H2
副 翼
H1
H2
升降舵
H1
H2
小舵量
大舵量
副翼(内侧)
H1/H2 20mm/20mm
舵量比率：85%
H1/H2 22mm/22mm
舵量比率：100%
升降舵(内侧)
H1/H2 18mm/18mm
舵量比率：75%
H1/H2 23mm/23mm
舵量比率：100%
方向舵(下端)
H1/H2 15mm/15mm
舵量比率：80%
H1/H2 19mm/19mm
舵量比率：100%
襟翼
H1 13mm
H1 29mm
特别注意事项：
前检测：飞行
第一次飞行此产品或者更换遥控器后，必须校准油门，这样才能保持4套动力产生的拉力一致，具体校正方法见
电调说明书。
飞行前设定：
1. 降落开襟翼飞机抬头比较明显，需要混控点降舵才能很好降落，小舵量襟翼需要1.5mm降舵，大舵量襟翼需
要3mm降舵
2. 升降舵调平飞机飞行会有比较明显的低头现象，这样需要1.5-2mm升舵飞机就能够很好的平飞；
3. 放下襟翼飞行时，我们需要较柔和的增加油门，不能瞬间加大油门量，否则会出现飞机突然向下飞行，容易
造成飞机坠毁事故.
大、小舵参数
中文版中文版
PNP 组装说明
22
B-24 LIBERATOR
Iten No.:

Add.:FeiYi Building,face to Labor Bureau, Fumin Middle Road, Dalang Town,
Dongguan City，Guangdong Province, China
HK Freewing Model International Limited
东莞市飞翼电子科技有限公司
香港飞翼模型国际有限公司
地址: 广 东省东莞市大朗镇富 民中 路402-408号飞 翼楼 四楼
Web: http://www.sz-freewing.com
Email:[e-mail]
Tel: [phone] Fax:[phone]
Web: http://www.sz-freewing.com
Email:[e-mail]
Tel: [phone] Fax:[phone]
Dongguan Freewing Electronic Technology Ltd
R