FlameWheel 550

2015.05 Revision 

User Manual V2.0
2 © 2015 DJI. All Rights Reserved. 

Read this disclaimer carefully before using FlameWheel 550. By using this product, you 

hereby agree to this disclaimer and signify that you have read them fully. FlameWheel 550 

is an excellent multi-rotor. With a good autopilot, it will even offer tremendous flight features 

for low altitude flight working in restricted space. Despite the controller of autopilot operates 

in the safest manner when the main power battery is connected, we strongly recommend 

customers to remove all propellers, use power supply from R/C system or flight pack battery, 

and keep children away during system calibration and parameter setup. Please respect 

the AMA’s National Model Aircraft Safety Code. Please install and use this product in strict 

accordance with the User Manual. SZ DJI Technology Co., Ltd. and its affiliated companies assume 

no liability for damage(s) or injuries incurred directly or indirectly from using, installing or refitting this 

product improperly, including but not limited to using non-designated accessories.

This device complies with part 15 of the FCC Rules.

DJI FlameWheel is registered trademark of DJI Innovations. Names of product, brand, etc., 

appearing in this manual are trademarks or registered trademarks of their respective owner 

companies. This product and manual are copyrighted by DJI Innovations with all rights 

reserved. No part of this product or manual shall be reproduced in any form without the prior 

written consent or authorization of DJI Innovations. No patent liability is assumed with respect 

to the use of the product or information contained herein.

F550 Profile

FlameWheel 550 (F550) is a multi-rotor designed for all pilots for fun or AP. With DJI WKM or 

NAZA autopilot system, it can achieve hovering, cruising, even rolling and other flight elements. 

It can be applied for entertainment, aerial photography, FPV and other aero-modeling activities.

Product Usage Cautions

When flying, the fast rotating propellers of FlameWheel 550 will cause serious damage and injury. 

Therefore, please fly with a high safety consciousness. 

1. Keep flying multi- rotor away from objects, such as obstacles, human beings, high- voltage lines and 

so on.

2. Do not get close to or even touch the working motors and propellers, which will cause serious injury.

3. Do not over load the multi-rotor.

4. Check that the propellers and the motors are installed correctly and firmly before flight.

5. Check whether all parts of multi- rotor are in good condition before flight. Do not fly with old or broken 

parts.

6. Use DJI parts as much as possible.

If you have any problem you cannot solve during installation, please contact our customer service.

Disclaimer
© 2015 DJI. All Rights Reserved. 3

Contents

Disclaimer 2

F550 Profile 2

Product Usage Cautions 2

Contents 3

In the Box 4

Tools Needed 5

Preparing for Mounting 5

 Motor Mounting Description 5

Propeller Mounting Description 6

ESC and Motor Wiring Description 6

Assembly 7

ESC Sound Description 8

Specifications 9
4 © 2015 DJI. All Rights Reserved. 

In the Box

Top Board 550FBT ×1 Bottom Board 550FBB ×1 

Frame Arms 550FAC ×2 Frame Arms 550FAW ×2

Motors CW ×3 Motors CCW ×3

Propeller Pairs ×4 ESC ×6

Screws 550-M3×8 ×24 Screws 550-M2.5×6 ×36

Propeller Removal Clamp ×1 Magic Strap 550MSX ×1

Battery Band 550BBX ×11

Power Line Pair 550PLP ×1
© 2015 DJI. All Rights Reserved. 5

Tools Needed

Preparing for Mounting

Motor Mounting Description 

The size of the assembly hole is shown below.

Tools Use

2.0mm Hex Wrench For frame and motors installation.

Screw Glue For fastening screws.

Nylon Cable Tie, Scissors, Diagonal Cutting Pliers For binding devices and wires.

Foam Double Sided Adhesive Tape For fixing receiver, controller and 

other modules.

Soldering-iron & wires For connecting ESCs’power 

cables to bottom board.

 The screw size is M3. Mount the motors using appropriate screws.

 Note the thread depth and the size of the screws. Using screws that are too long or 

too large may damage the motor.

19 mm

16 mm 28.2 mm

40 mm

26 mm

M6

4×M3 Thread depth 3mm
FlameWheel 550 User Manual 

6 © 2015 DJI. All Rights Reserved. 

Propeller Mounting Description

Attach the propeller with a silver nut onto the 

counter clockwise motor.

Attach the propeller with a black nut onto the 

clockwise motor (which has an indent on the 

screw).

Lock: Tighten the propeller by rotating 

 it in this direction. 

Unlock: Remove the propeller by 

 rotating it in this direction.

Silver nut (9450) Black nut (9450 cw)

ESC and Motor Wiring Description

1. Please solder each ESC to the power pads on the bottom board as shown in the figure 

below. Make sure that the solder is firmly attached on the power pads and that there is no 

possibility for a short circuit. The power cable is a coaxial power cable. Do not damage the 

protector on the red cable to avoid short circuit. The red core of the coaxial power cable 

is positive, and the shielding layer of the coaxial power cable is negative. Make sure to 

solder them correctly at the proper length (the wires should be just long enough to reach 

the soldering point, face outwards, and should not be bunched up in front of the soldering 

point).

2. Connect the signal cable to your controller. The orange wire of the signal cable is for the 

control signal; the brown wire of the signal cable is for the GND.

3. Connect the motor to the ESC. Test the motor and make sure the rotation direction of each 

motor is correct. If not, switch the position of any two cables that are connecting the motor 

to the ESC to change the rotation direction.

+ _

+ _

+ _

+ _

_ +

_ +

_ +

To Battery

Power Pads

Motor

To the controller

Power cable

ESC

ESC cable
FlameWheel 550 User Manual 

© 2015 DJI. All Rights Reserved. 7

 Please solder ESCs to power pads on bottom board as the figure shows. 

 Use any insulating method at all soldering spots. Make sure there is no short or 

open circuit. 

 Make sure the side of power pads is upward.

Assembly

1. Install the bottom board. Note to install the screws by appropriate force to prevent 

breaking threads. Use adequate screw glue for installing screws.

2. Install your flight control system and electronic system.

3. Install ESCs and motors. Make sure the rotation direction of each motor is the same as the 

way in the figure shows. If not, switch any of two wire connections of the incorrect motor to 

change its rotation direction.

4. Tidy all cables. Make sure all cables are not be cut by the frame boards and propellers. 

Smooth out the boards edge if necessary.

5. Install the top board.

6. Install the propellers. Please install the propellers after the flight control system 

configuration procedure. Make sure the rotation direction of propellers are the same as the 

figure shows. Tighten the propeller by rotating it in lock direction. Do not use any thread 

lock.

Screw M2.5x6

Screw M3x8

Top board

Bottom board

1

5

6

2

3

4
FlameWheel 550 User Manual 

8 © 2015 DJI. All Rights Reserved. 

 Note that arms 12 point to the nose of aircraft and arms 45 point to the tail of 

aircraft. It is recommended to choose the same color arms for the same direction. 

See from top, motors on arms 135 rotate counter-clock wise and motors on arms 

246 rotate clock wise.

Specifications

Frame

Diagonal Wheelbase 550 mm

Frame Weight 478 g

Takeoff Weight 1200 g ~ 2400 g

ESC

Max Allowable Voltage 17.4 V

Max Allowable Current (Persistent) 20 A

Max Allowable Peak Current (3 seconds) 30 A

PWM Input Signal Level 3.3 V / 5 V Compatible 

Signal Frequency 30 Hz ~ 450 Hz

Battery 3 S ~ 4S LiPo

Weight (without cable) 12.5 g 

Weigh (with cable) 27 g 

Motor

Stator size 23×12 mm

KV 960 rpm/V

Weight 57 g

Propeller

Diameter / Thread Pitch 9.4×5.0 inch

Weight (Single) 13 g 

ESC Sound Description

Normal Description

1234 Ready

Abnormal Description

BBBBBB... No signal input, or throttle stick is not in the bottom position

You can instantly tell what the unit’s status is by listening to the sounds emitted from 

the ESC.
The content is subject to change.

Download the latest version from

http://www.dji.com/product/flame-wheel-arf

If you have any questions about this document, please contact DJI by 

sending a message to DocSupport@dji.com.

© 2015 DJI. All Rights Reserved.