4DRC 4D-V25 User manual

4D-V25
English
Suitable for ages over 14
Quadcopter operating instructions
In order to meet the requirements of the aeronautical radio station's electromagnetic
environment (various of aero models and UAV are not allowed to fly within the range of
10 km on each side of center line and 20km on both ends of the airport runway and in
the) and civil aviation routes and airlines. Using various models and drones in the no-fly
zone issued by the relevant state departments is prohibited.
Regular edition

Warning
1. The packaging and instructions contain important information and should be kept.
2. With this aircraft, you are responsible for ensuring that no harm will be caused to the personal and
property of others.
3. Commissioning and installing of aircraft must be strictly in accordance with the operating
instructions, and attention shall be paid to the distance between the aircraft and the user or other
people shall be 2 to 3m to prevent the aircraft from bumping into the head, face and body of
people and causing injury in flying and landing, etc.
4. Our company and distributors are not responsible for any loss and damage, as well as injury to
people caused by improper use or operation.
5. Children should be guided by adults when operating the aircraft. This product is prohibited to be
operated by children under 14 years old.
6. Please follow the instructions or packaging instructions to install and use correctly, and some parts
should be assembled by adults.
7. The product contains small parts, please place it out of the reach of children to prevent the risk of
accidental eating or suffocation.
8. It is strictly forbidden to play on the road or in the place where water is accumulated to avoid
accidents.
9. Please put away the packing materials in time to avoid harm to children.
10. Do not disassemble or modify the aircraft. Disassembly or modification may cause malfunction to
the aircraft.
11. The charging cable needs to be inserted into the designated power supply 5V 2A that is the
same as the product label.
12. The use of other charging cables will cause damage to the battery and may cause unexpected
dangers.
13. The charging cable is not a toy.
14. When charging the rechargeable battery, it must be under the supervision of an adult. When
charging, it must be far away from flammable materials. During charging, the guardian should not
leave the monitoring range.
15. Please do not short circuit or squeeze the battery to avoid explosion.
16. Do not mix different types of lithium batteries.
17. The aircraft uses a rechargeable lithium battery, which needs to be pulled out for charging.
18. Do not short-circuit, decompose or throw the battery into fire; do not put the battery in a place
with high temperature and heat (such as in fire or near electric heating device).
19. The aircraft should be used as far away from other electrical equipment and magnetic objects as
possible, they may cause mutual interference.
20. Please keep a safe distance from the high-speed rotating propeller to avoid the risk of scalp or
cut
21. The motor is a hot part; please do not touch it to avoid burns.
22. LED has laser radiation; please do not give direct light beam to others.
23. Do not use the model near your ears! Misuse may cause hearing damage.
24. The USB charging cable must use the data cable provided by our company to charge the battery,
otherwise it will cause serious damage to the battery and will lead to unexpected danger.
25. To meet the magnetic environment requirements of aeronautical radio stations. During the radio
control order issued by the relevant state departments, the model remote control should be
stopped within the city area as required.
26. Turn off the switch and unplug the battery when the battery of the aircraft is used up, and charge
after 30 minutes of rest, otherwise the battery will be easily damaged.
01

ONOFF
1. List of accessories included:
2. Name of each part of aircraft:
Aircraft×1
Fan blade
Vertical wing
Power switch Battery
LED lights
Motor
Landing gear
Front landing gear ×1 Rear landing gear ×2 Lithium battery ×1 Remote control ×1
Fan blade ×4 Operating
Instructions ×1
USB charging cable ×1
02

B
A
3. Installation of aircraft parts:
Note: When installing the landing gear, the direction of the bent metal part of the landing gear
must be consistent with that in the figure to avoid wrong installation direction which causes
unable to take off!
Note: The wind blade is printed with letter A, B and C, please install it correctly according to the
diagram, otherwise it will not take off
C (lower floor)
A (upper floor)/C (lower floor)
3.1 Assembly of landing gear:
3.2 Wind blade installation diagram:
Assemble the landing gear correctly according to the diagram: align the landing gear with the socket
on the bottom of the aircraft for docking
Remove the fan blade. (if A1/A2/A3/A4 is broken, replace A1/A2/A3/A4,if B1/B2 is broken, replace
B1/B2, so does C1/C2; when it is wrongly replaced, the aircraft cannot take off)
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1 2
3
4. Lithium battery charging instructions:
5. Name of each part of the remote control:
4.1 Push the battery in the direction indicated
by the arrow according to the illustration
4.3 Charging: Insert the USB port of the USB charging cable into the computer USB port (or use
the power adapter with an output of 5V 2A), and connect the other end of the USB charging
cable to the battery socket. The red light is off when charging, and the red light is on when the
charging is complete.
4.2 disconnect the aircraft from the battery
power port and then remove the battery.
Desktop PC Mobile power USB adapter USB power
socket
Laptop
It must be charged with the aircraft charging cable provided by the factory, and other
charging cables cannot be used. Be sure to remember to avoid accidents.
Warning
Accelerate
Throttle/left and
right lever
Advance fine-tuning
Left fine-tuning
Reverse fine-tuning
Right fine-tuning
360° roll
Indicator light
One-key take-off /
one-key landing
Emergency stop (short press) /
one-key calibration (long press)
Headless mode (short press) /
one key return (long press)
Advance / reverse / left / right
control lever
Switch
One key rotation (short press) /
one key circling around (long
press)
04

1
6. Remote control battery installation:
7. Environmental requirements before flight:
8. Pre-flight preparation instructions (using remote control):
Please choose an outdoor and open environment with no rain and snow and low wind. Please
stay away from crowds, trees, wires, tall buildings, airports, and signal transmission towers when
flying. Do not fly in a too small indoor environment with lots of things.
8.1 Aircraft frequency matching: Turn on the power of
the aircraft and place it on a horizontal plane. At
this time, the aircraft placed on the horizontal plane
will automatically enter the frequency matching
state, and the fuselage lights will flash.
Note: Set the aircraft in a correct direction, and the
nose shall face forward. It must be placed on the
horizontal plane.
AAA battery
Battery cover
Note
1. The positive and negative poles and the positive and
negative poles of the battery box must be identified when
inserting the battery, and error is not allowed.
2. Do not mix old and new batteries.
3. Do not mix different types of batteries.
When not flying, please do not install
the battery in the aircraft to avoid
battery damage.
Warning
Instructions in charging:
Do not put the charged battery in a place with high temperature and heat,
such as an open flame or an electric heating device, otherwise damage or
explosion may occur.
Do not hit or beat the surface of hard objects
with the battery.
Do not disassemble the battery.
Do not immerse the battery in water, and please
store the battery in a dry place.
Do not leave battery alone when charging.
●
●
●
●
●
Battery installation:
6.1 Remove the battery cover.
6.2 According to the polarity
instructions on the battery
compartment, remove the
battery cover on the back and
insert a 3X “AAA” battery (not
included).
05

8.3 Horizontal calibration operation:
Long press the calibration key on the remote controller, and the LED lights on the aircraft will
flash. When the LED lights on, calibration of the aircraft is completed, the remote controller emits
"beep" (Figure 1).
8.4 Start/stop
Push the left control lever on the remote control upward (Figure 2). At this time, the aircraft can take
off normally. After taking off, all the indicator lights of the aircraft will always be on. During the flight,
whether you short press the key, the aircraft will stop flying (Figure 3).
8.2 Press and hold the power switch button of the
remote control (step 1), and the power indicator
of the remote control will be on; push the throttle
lever up to top (step 2) and then to the end (step 3),
code-matching will succeed, and the aircraft light
will change from flashing to be always on.
It must ensure that the power of the aircraft/remote control is sufficient or it
cannot take off!
Note: The calibration must be completed only when the aircraft is placed on a horizontal plane.
Note: This function operation is only suitable for the aircraft in an uncontrolled state. Under normal
circumstances, it is recommended to use the one-key takeoff/one-key landing key.
Warning
Figure 1
Figure 2 Figure 3
2
1
2
3
06

9. Remote control method:
8.5 One-key take-off and landing
When the frequency matching is completed, lightly press the remote control "one-key takeoff/landing"
button (Figure 4), the aircraft will automatically rise to a height of about 1 meter, and keep flying at
this height; when this function key is pressed again, the aircraft will automatically land on the ground
slowly.
Please follow the steps in the above sequence before taking off: open (reference 8.1)→
remote control starting frequency matching (reference 8.2)→ horizontal calibration (reference
8.3)→ start/stop (reference 8.4)→ one-button take-off and landing (reference 8.5)
Warning
Figure 4
When the left joystick (throttle) is pushed
up, the rotation rate of the main blade
increases and the aircraft rises.
When the left joystick (throttle) is pushed
down, the rotation rate of the main blade
slows down and the aircraft descends.
When the left joystick (rudder) is pushed to
the left, the aircraft nose turns to the left.
When the left joystick (rudder) is pushed to
the right and the nose of the aircraft will
turn to the right.
When the right joystick (rudder) is pushed
up, the aircraft moves forward.
When the right joystick (rudder) is pushed
down, the aircraft moves backward.
07

10. 360° roll:
11. Introduction of remote control function and operation:
Special tip: Please make sure the aircraft is aligned with the straight line and let the gyroscope
automatically detect the straight line, and the headless mode of straight line flight can be realized.
Figure 5
When the right joystick (rudder) is pushed
to the right, the aircraft fuselage deviates to
the right.
When the right joystick (rudder) is pushed
to the left, the aircraft fuselage deviates to
the left.
10.1 360° roll on the left
Short press the 360° roll button, then push the
right joystick to the left, and the aircraft will flip
360° to the left accordingly.
10.2 360° roll on the right
Short press the 360° roll button, then push the
right joystick to the right, and the aircraft will flip
360° to the right accordingly.
11.1 Headless mode
The front of the aircraft when the code-matching is turned on is by default the front in headless mode; if
it is necessary to adjust the direction, please turn on the code-matching again, and short press the
remote controller "headless mode" function key (Figure 5). When exiting, please tap gently press
this function key again.
The aircraft can achieve 360-degree flight by the following joystick operation. In order to better perform
the roll function, a height of about 1.5 meters shall be ensured between the aircraft and the ground. It is
best to operate the aircraft to roll during the ascent stage, so that the aircraft can maintain the height
more easily after rolling.
Fro
nt
Right
Re
ar
Left
Fro
nt
Right
Re
ar
Left
08

Figure 6
Figure 7
Figure 8
11.2 One-key return
The return function can be used to recall the aircraft when the flight distance of the aircraft is too long.
The remote controller must be facing the tail of the aircraft when starting up and frequency matching.
During the flight, long press the "Return" key (Figure 6). The remote controller sends out a "beep"
sound, the aircraft enters a key to return home and automatically flies back to us. When the right rocker
is operated arbitrarily, the return function is released.
11.3 Speed switching
When the aircraft takes off, it is by default in the low-speed mode (3-geared switching); gently press the
remote control by a "beep" sound for low-speed gear, two "beep" sounds for medium-speed gear, and
three "beep" sounds for high-speed gear (Figure 7).
11.4 A. Taxi take off:
Place the aircraft on a horizontal plane, and push the right joystick upwards to make the aircraft glide
close to the ground for a certain distance and then take off.
09

12. FAQ and solving guidelines:
Question
The aircraft indicator flashes
without any response
The blades of the aircraft rotate
but cannot fly
The aircraft vibrates badly
Fine tuning is done but still can't
make the aircraft stable
After the impact, start the aircraft
again and it fly uncontrollably
Reason
The aircraft has insufficient power
1. Low battery
2.1 Blade deformation
2.2 Installation error of ABC
propeller
Blade deformation
1. Blade deformation
2. Defective motor
The three-axis acceleration
sensor loses its balance due to
impact
Solution
Charge the battery
1. Charge the battery
2.1 Replace the blade
2.2 The fan blades are printed with letters
A, B and C. If fan blade A is broken,
replace A, and if fan blade B is broken,
replace B, so does fan blade C.
Replace the blade
1. Replace the blade
2. Replace the motor
After leaving the aircraft for 5-10 seconds,
or by the horizontal calibration, it will be ok.
For the steps, please refer to the manual,
8.3 horizontal calibration operation.
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11.5 Fine tuning function
1. Fine tuning of aircraft moving forward/backward
When the aircraft leaves the ground and the
aircraft deviates to the rear, press and hold ①
forward fine-tuning key to fine-tune; when the
aircraft deviates to the front, press and hold ②
backward fine-tuning key to fine-tune.
2. Fine tuning of aircraft deviates to the left/right
When the aircraft leaves the ground and the
aircraft deviates to the right, press and hold ③
left fly fine-tuning key to adjust, and when the
aircraft deviates to the left, press and hold ④
right fly fine-tuning key to adjust.
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