KDS 450SD-E 6CH RC Helicopter

The KDS 450SD, as one of the members of KDS 450 class helicopter series. It is a perfect 3D electric helicopter which features priecous metal parts and excellent functions electric equipment. The full fuselage features streamline design. It cleverly utilizes frame space and also creates a minimalistic beauty. Utilize bevel gear driving enhanceing the driving efficiency of helicopter significantly. New tail blade control set utilizes ball joints connecting method, which makes the heading hold function play fully.

Newly designed main rotor head with helicopter flexibility adjusted at will. All electronics are fixed and adjusted before packaging.

The new KDS 820 Gyro, locking the helicopter head. Shaft driven tail rotor, which is easy to assemble and configure, as you won’t need to care about the belt tension.

What’s about the control system? 7Ch 2.4GHz full radio system control. With almost zero interference.


  • Length:640mm
  • Height: 240mm
  • Width: 120mm
  • Main Rotor: 315mm
  • Main Rotor Diameter: 710mm
  • Tail rotor Diameter: 155mm
  • Motor Pinion: 13T
  • Main Gear: 150T
  • Autorotation Tail Drive Gear: 106T
  • Tail Drive Gear: 25T
  • Drive Gear Ratio:11.5:1:4.25
  • Weight(W/motor):870g
  • BL ESC :40A
  • BL motor: 3500KV
  • Gyro: KDS820 dual rate and head lock gyro
  • Servo: 3 KDS9g digital servos and 1 N590 digital servo
  • Lipo: 11.1V 2200mAh 20C


Total Length 710 710 710
Height 240 200 200
Main Frame Carbon Fiber Carbon Fiber Aluminum
Main Rotor/Tail Rotor Metal Metal Plastic
Flybar Yes N/A Yes
Battery 11.1V 2200mAh 20C 11.1V 2200mAh 20C 11.1V 2200mAh 20C
Motor 3500KV Brushless Motor 3500KV Brushless Motor 3500KV Brushless Motor
Servo 3 x 9g Servo 1 x N590 Servo 3 x KDS N300 Servo 1 x N590 Servo 3 x 9g Servo 1 x N590 Servo
Gyro KDS820 Gyro KDS EBAR 3-Axis Gyro KDS820 Gyro
ESC 40A 40A 40A
Tail Rotor Drive Shaft Driven Shaft Driven Belt-Driven
Aluminum Case N/A N/A N/A

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