Walkera Dragonfly HM UFLY 4CH FP CNC Metal RC Helicotper RTF 2.4GHz w/ Brushless Motor, LCD TX

Walkera Dragonfly HM UFLY 2.4GHz 4CH Metal RC Helicopter RTF with Brushless Motor, LCD TX!

Simple Design, Easy to Control and Very Stable, with Brushless Motor and Full Metal Rotor installed!

Walkera HM UFLY 2.4GHz 4CH Metal RC Helicopter, come in Ready-To-Fly package with all the necessary items inside. It is very stable and easy to fly, it's suitable for those who want to upgrade from co-axial to single blade helicopter. You can learn how to fly it in a short time. Its overall length is about 510mm, the parts are easy to install and is easy to repair. The new WK-2402 2.4Ghz 4CH transmitter (with LCD display) with over 100+ channels allows you to find different 2.4Ghz at the same time without collision, also the power indication avoids the crash caused by lack of transmitter electricity.

Tail rotor is used to generate wind to counter act the main rotor rotation. Precise of tail rotor wind is needed to keep the helicopter heading one direction. We usually have two ways in generating the precise of wind from the tail rotor, one is the Tail Motor, another one is sharing the power from the Main Motor by a tail drive shaft. Tail Motor is usually slower, it can't keep up the main motor's speed and causing the tail to drift while heli is going up and going down, usually low price model and small scale helis use a tail motor. The best solution is to have a Gyro and Rudder Servo. By changing the Tail Rotor blade pitch, you can adjust the amount of wind generating to keep the heli in one heading, to do this, you need a good performance gyro constantly monitoring the heli heading and give correction to rudder servo, then it will push the tail rotor pitch. You will not imagine how quick it worked during the flight, but it is the heart and soul for any RC helicopter.

Here are some highlight features of the Walkera HM UFLY

• Precise CNC-machined metal rotor head provides more operation accuracy.
• Compact 90o swashplate structure is adopted and easy-to-be-mounted parts like servo are used.
• High performance brushless motor powered by 7.4V 800mAh Lipo offers 10- to 12- minute flight time, depending on your flight mode.
• New 2.4G technology, with the functions of identification and precise code pairing, can allow above 20 aircrafts to fly in the same field and same time.

Here are some highlight features of the WK-2402 Transmitter

• The WK-2402 adopts frequency-hopping spread spectrum 2.4G technology and features automatic code pairing and ID assignment.
• Graphic display menu is simple to understand and to set.
• The appearance design accords with ergonomics and features easy holding. The LCD screen with backlight and graphic interface looks more personalized.
• Both the length and tension of the stick can be adjustable. It is convenient to freely switch among the 4 stick modes.

UFLY Specification

• Overall Length: 510mm
• Main Rotor Diameter: 520mm
• Tail Rotor Diameter: 145mm
• All-up Weight: 288g (Battery included)
• Brushless Motor: WK-WS-21-002
• Transmitter: WK-2402
• Receiver: RX-2424A
• Gyro: Built-in
• Battery: 7.4V 800mAh Li-Po
• Servo: Weight 9.1g / Speed 0.12sec/60o(4.8V) / Torque 1.1kgf.cm / Dimension 22.5x11.8x27mm

WK 2402 Specification

• Encoder: 4 channel
• Frequency: 2.4GHz
• Outpower: ≤10mW
• Current Drain: ≤120mW
• Power Source: 1.2V x 8 NiCd (9.6V600mAh) or 1.5V x 8 AA Dry Batteries
• For: RX-2403D, RX-2406C, RX-2420, RX-2423

	WK-HM-UFLY	WK-HM-4-2.4G
Overall Length	510mm	480mm
Main Rotor Dia.	520mm	485mm
Tail Rotor Dia.	145mm	146mm
Main Motor	Brushless Motor WK-WS-21-002	370SH
Tail Motor	N/A	1220FE33
Receiver	RX-2424A	RX-2421
Gyro	Built-in	Built-in
Battery	Li-Po 7.4V 800mAh	Li-Po 7.4V 800mAh
Transmitter	WK-2402 With LCD Mon	WK-2401

• 1 x Walkera Dragonfly HM UFLY RC Helicopter
• 1 x Walkera Transmitter WK-2402
• 1 x Li-polymer Battery (7.4V 800mAh)
• 1 x Charger
• 1 x Manual

• 8 x AA Dry Cells For Transmitter

• Dimension: 55 x 24 x 20cm
• Gross Weight: 2.08kg