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[Century] Buy Radikal E640 Flybarless Electric RC Helicopter (CN1320EFBL)

Radikal E640

640 size Electric RC Helicopter

Pilot Skill Level: Intermediate to Experienced

Part# CN1320EFB**

Radikal E640 R/C Helicopter

* Alternative Link: .

Some parts of the Radikal E640 Build video above are based off builder's own opinions.
They are not necessary to perform during the actual build.

* Alternative Link: .

Starting a new class of helicopters by incorporating the use of blade sizes up to 640mm allows 700 class flight characteristics in a smaller, more affordable package.

By offering an electric helicopter at a slightly larger size than a 600 yet smaller than a 700, go ahead, push it to its limits. With increased strength, rigidity, and quality engineering, this is a 12S fire-breathing little monster.


  • Flybar
  • Flybarless


  • CNC full metal precision rotor head w/8mm spindle.
  • A choice of flybar or flybarless models
  • 11 tooth 5mm shaft size pinion, mod 1 (straight cut).
  • 103 tooth main gear, mod 1 (straight cut).
  • 4.0: 1 Tail Gear Ratio
  • Designed for power system up to 12S Li-Po
  • Carbon fiber frames for ultra-rigid and compact design
  • Easily serviceable engine maintenance
  • Push/pull CCPM control system
  • Break-away canopy standoffs
  • Triple bearing supported 10mm hardened main shaft
  • 120 degree dual race ball bearing metal swashplate
  • High quality DuPont® plastic injection mold w/strengthening fibers
  • Stainless steel damper mounted bearing torque tube for high efficiency
  • Ultra high strength torque tube gears
  • Top to bottom supported tail pitch plate for improved accuracy
  • Dual race ball bearing with thrust bearing supported tail blade grips
  • Front mounted rudder servo with push/pull bell crank
  • Carbon tail boom supports
  • Sleek Pre-painted fiberglass canopy
  • New lightweight landing gear
  • Also includes main blade holder, and 4 century hook and loop straps.


  • Main Rotor Blade Diameter: 57.3 in / 145.5 cm (if using 640mm blades)
  • Tail Rotor Blade Diameter: 10.25 in / 26.0 cm (92 mm Blades)
  • Length: 49 in / 124.5 cm
  • Height: 13.7 in / 34.8 cm
  • Width: 4.5 in / 11.45 cm
  • Battery Compartment Size: 250mm x 70mm x 40mm

Just Provide ( Items required to fly but not included )

  • 1x 600mm - 640mm Main Blades
  • 1x 6-Channel or better Radio Transmitter system capable of 120 degree eCCPM mixing.
  • 1x 6-Channel or better Receiver.
  • 1x Brushless Electric Motor
  • 1x 60 amp or better Brushless ESC
  • 1x 6S ~ 12S Li-Po Battery/Battery Set* (See battery compartment size for battery size restrictions)
  • 4x Standard or better Servos
  • 1x Gyro (Heading Lock/Hold recommended) for flybar version, or 3-Axis Flybarless Gyro System for Flybarless version
  • 1x Receiver Battery or BEC
  • 1x Battery Charger
  • RC Helicopter Tools

For the best performance, Century Helicopter Products recommends Thunder Power batteries.