Brushless Motor for 700/750/800-Class Electric Helicopter Series

(Patent Pending)
  • $330.95


NOTE: Use the pull-down menu above to select the shaft of your choice:

  • 6mm XL Edition, Standard (KDE700XF-SR41)
    • ф6mm shaft diameter, 51mm shaft extension, 125.7mm overall length
      • ALIGN TREX 800 Series
      • ALIGN TREX 700 Series
      • AVANT MOSTRO Series
      • COMPASS 7HV Series
      • GAUI X7 Series
      • JR FORZA 700 Series
      • KDS AGILE 7.2 Series
      • SYNERGY E7SE Series
  • 6mm Edition, Goblin (KDE700XF-SR41-G700)
    • ф6mm shaft diameter, 34.5mm shaft extension, 109.2mm overall length
      • HENSELEIT RIGID Series
      • SAB GOBLIN 770 Series
      • SAB GOBLIN 700 Series
      • SAB GOBLIN URUKAY Series
      • SAB GOBLIN SPEED Series
  • 8mm XL Edition (KDE700XF-SR41-8MM)
    • ф8mm shaft diameter, 56mm shaft extension, 130.7mm overall length
      • MIKADO LOGO 800 XXTreme Series
      • MIKADO LOGO 700 XXTreme Series

The new KDE Direct 700XF-505-G3 High-Performance Brushless Motor is an extremely efficient and powerful motor for any 700 through 800-class Electronic RC helicopter. Using the latest Computer-Aided Magnetic Field Analysis software to design the most efficient and optimized design for high-level, 3D-competition flight and the highest-quality materials and processes in manufacturing; the new "G3" series is the new generation in performance for the RC helicopter marketplace. The motors are designed with performance and durability in-mind, with features unseen in the current market: (1) high-grade, 240°C continuous (340°C maximum) high-temperature solid-core copper windings for failure-free operation in extreme-climates, (2) Japanese-built, 0.2 mm silicon-steel stator laminations and Kevlar tie-wraps for high-efficiency performance, and (3) quad-bearing supported, ABEC-7 bearings for maintenance-free and worry-free flying for hundreds of hours. These are just a few of the advantages built-in to these motors, and every detail of the motors was scrutinized to produce the absolute best available; for a wide-range of flight applications.

Motors include 200°C, 10 AWG silicone-wire leads and ф6.5mm 24k Bullet Connectors (pre-soldered to the motor leads and ESC bullets in the box).


      Material: Neodymium N45UH, 505Kv

      Models: High-voltage, 700- through 800-class helicopters (compatible with M4 x ф30mm and M3 x ф25mm mounting profiles) and ф6mm exit shaft (XL edition).


      • Clear anodize, mirror-polish CNC gloss endbells
      • Black electro-plate, CNC gloss central core (flux ring)

      Full Specifications:

      Kv (Motor Velocity Constant) 505 RPM/V
      Kt (Motor Torque Constant) 0.0189 Nm/A
      Km (Motor Constant) 0.2114 Nm/√(W)
      Maximum Peak Current 290+ A (2 s)
      Maximum Peak Power 12,875+ W (2 s)
      Maximum Continuous Current* 162+ A (180 s)
      Maximum Continuous Power* 7,195+ W (180 s)
      Maximum Efficiency 93%
      Voltage Range 29.6 V (8S LiPo) - 60.9 V (14S LiHV)
      Io (@10V) 2.6 A
      Rm (Wind Resistance) 0.008 Ω
      Magnetic Poles 10 (12S10P)
      Bearings Quad, 698ZZ/MR148ZZ
      Mount Pattern M4 x ф30 mm, M3 x ф25 mm
      Stator Class 4541, 4T+4T, YY
      Stator Windings 18-Strand, ф0.38 mm
      Shaft Diameter ф6 mm (ф8 mm Internal)
      Shaft Length 51 mm
      Motor Dimension ф56 mm x 74.7 mm
      Motor Weight 655 g (695 g with Wire Leads)
      Motor Leads 10 AWG, 200°C
      Cooling System High-Volume Centrifugal Fan
      Motor Timing 5° - 15°
      ESC PWM Rate 8 - 32 kHz

      *: Brushless motor requires consistent open airflow (5 mph or greater) across the windings to maintain maximum continuous current and power ratings during operation. Performance figures are provided as guidelines for normal conditions and operation; environmental factors, such as air temperature and humidity, can significantly alter the maximum performance limits of the motor.

      Technical Media

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