FeiYu Tech X4 User Manual

FEIYU
TECH

X4 QUADCOPTER SYSTEM

Multi-rotor Aircraft build Manual

Guilin Feiyu Electronic Technology Co., Ltd

Rm. B305, Innovation Building, Information Industry Park, Chaoyang Road, Qixing District,

GuiLin, CN

www.feiyu-tech.com

Email: [e-mail]

Rev 1: 24th July 2011

Guilin Feiyu Electronics Co., Ltd.

Page | 1

Aircraft Parameters

1. Dimensions

copter

2. Empty Weight: 580g (receiver and battery not included)

3. Payload capacity: 700g (battery, receiver, etc.)

4. Maximum Gross Take-Off Weight: 1280 grams. For safety reasons do not exceed

this weight.

5. Airborne time (with 3S 2200mAh Lipo battery) : Approximately 10 minutes

6. Power requirement: 3S1P Lipo, 1500 to 5000mAh, Discharge rate: 15C and above.

7. FY-ESC (included): 10A (a standard PWM ESC).

8. Suitable for FY90Q or FY91Q Flight Controllers.

9. Require at least a 5 channel RC Receiver.

Note: Please always consider safety first when using this model aircraft. Take all

required precautions to prevent accidental injury:

• Do Not Fly over people.

• Do Not use as a chase copter.

Installation Tools

1. Soldering Iron

2. Good solder with Rosen core

3. 2.0 mm Allen wrench (provided)

4. 2.0 mm diameter screwdriver

450mm

705mm

Motor to Motor

Diameter

Maximum Propeller

Diameter

Guilin Feiyu Electronics Co., Ltd.

Page | 2

Step 1: Frame Arm Assembly (4 set)

1. Unpack the Arm pairs. Note the arms have different LED colours: Blue, Red or
Green.

2. Unpack these parts to complete 4 arm sets:

• M3 x 5mm button head screws & M3 x 30mm pillars

• Four motor mount plates

• Four motors.

• Four landing gears.

Figure 1: Ensure the LED lights are facing outwards during installation:

The completed arm (assemble 4 sets):

M3×5mm Socket Screw

M3*5mm Socket Screw

Motor

Propeller

Leg

Right Arm

Left Arm

Soldering point

(Solder both ‘legs’)

Soldering point

(Solder both ‘legs’)

M3×30mm Pillar

Arm note: When assembled properly,

the “Feiyu Tech” words should be

facing upright and the welding points

lined up perfectly.

Guilin Feiyu Electronics Co., Ltd.

Page | 3

Step 2: Fuselage And Installing The Arms By Solder

Figure 3: Solder (

red arrows) the 4 arms on to the fuselage plate:

\

1. Note the fuselage plate has a side “A”

and “B”. Ensure side “A” is always

facing upwards.

2. In this step, use the fuselage with

electronics installed. Solder all 4 arms to

this plate (Figure 4).

3. Caution: Do not overheat the arm

contact points, as the metal will deform

make it difficult for plate insertion.

4. Connect 3S Lipo balance plug to the

socket at the bottom of the fuselage; the

LEDs will light up. You may also check with a DC meter at the solder point; it should

indicate approximately 2.3 Volts.

Change any two wire

connection to change

ESC

Fuselage with Electronics

M3×25mm

Figure 4

Guilin Feiyu Electronics Co., Ltd.

Page | 4

Step 3: Install ESCs and Power Distributor

1. Take eight m3x25mm pillars and secure them with the button head screws . Make

sure that the electronics are facing up and the led plug is on the bottom. Take

another fuselage plate in one hand and with the other take a frame assembly, place

the assembly with the weld points pointing down and insert it in the slots provided

on the electronics fuselage.

2. Take four button head screws and the fuselage plate and align the plate with the

holes for the pillars, making sure that the other die cut holes line up properly.

Lightly screw the three button head screws into the pillars, now take the remaining

Frames and place them in the slots provided.

3. Once all frames are inserted into the top and bottom Fuselage plates, tighten the
four button head screws and insert the remaining four screws and tighten them as
before.

4. Inspect the Frames and make sure that the weld points are seated snugly in their
locations. If necessary, loosen the screw(s) to properly fit the pieces.

1. After soldering the 4 arms, install the 4 ESCs by connecting the 3 output wires of

ESC to the 4 motors. At this juncture, don’t worry about the motor rotation

direction.

2. Run both the ESC servo lead and the power supply to the middle fuselage. Connect

the power input leads to the JST connectors and exit the Deans Plug as shown

above.

3. You can now install the middle plate. Don’t forget to pull the 4 servo leads from the

ESCs out through the middle plate for later connection to the FY90Q or FY91Q.

4. After installing the middle plate, you can proceed to install the flight controller (FC)

(FY90Q or FY91Q) via the damper mount / anti-vibration pads.

5. Install your RC Receiver and complete the connection with the FC as per the FC’s

manual.

M3×25mm Pillar

M3×30mm Pillar

M3×5mm Socket Screw

Power cable through

Round hole

FRONT

Guilin Feiyu Electronics Co., Ltd.

Page | 5

Step 4 : Test The Motor Rotation

1. After installing the FC, activate the quad and carefully check that the propeller

rotation is as shown above.

2. Lastly install the top fuselage plate to protect the FC and RC Receiver.

Step 5: Voltage Level Indication via Fuselage LED Flashing

1. When flying, the white LED on the middle fuselage will begin flashing to indicate

the voltage of your flight battery, as follows:

Battery Voltage

>11.5V 11.1V~11.5V 10.8V~11.1V <10.8V

LED Flash SOLID Slow flash Medium flash Fast flash

Indication

Enough power Voltage down Land now

Emergency

Landing

Front

1

2

3

4

QuadCopter Layout:

1 = ESC 1 CCW
2 = ESC 2 CW
3 = ESC 3 CCW
4 = ESC 4 CW

CW = clock wise
CCW = counter clockwise

END of X4 MANUAL

Dated: 24th July 2011