Brushless Motor for 500/550/600-Class Electric Helicopter Series

(Patent Pending)
  • $176.95


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

  • 6mm XL Edition, Standard (KDE550XF-SR28)
    • ф6mm shaft diameter, 40.5mm shaft extension, 92.5mm overall length
      • ALIGN TREX 600 Series
      • ALIGN TREX 550 Series
      • BLADE 600 X Series
      • BLADE 550 X Series
      • COMPASS 6HV Series
      • KDS AGILE 5.5 Series
      • SYNERGY E6 Series
      • SYNERGY E5 Series
    • 6mm Edition, Goblin (KDE550XF-SR28-G500)
      • ф6mm shaft diameter, 23.5mm shaft extension, 75.5mm overall length
        • SAB GOBLIN 570 Series
        • SAB GOBLIN 500 Series
    • 5mm Edition (KDE550XF-SR28-5MM)
      • ф5mm shaft diameter, 32.5mm shaft extension, 84.5mm overall length
        • ALIGN TREX 500 Series
        • BLADE 500 X Series
        • GAUI X5 Series
        • MIKADO LOGO 500/Carbon Series
        • MIKADO LOGO 480 XXTreme Series
        • MIKADO LOGO 400/SE Series
        • MSH PROTOS 500 Series

    The new KDE Direct 550XF-1200-G3 High-Performance Brushless Motor is an extremely efficient and powerful motor for any 500 through 600-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, 13 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, 1200Kv

      Models: 500- through 600-class helicopters (compatible with M4 x ф30mm and M3 x ф25mm mounting profiles) and ф6mm exit shaft.


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

      Full Specifications:

      Kv (Motor Velocity Constant) 1,200 RPM/V
      Kt (Motor Torque Constant) 0.0080 Nm/A
      Km (Motor Constant) 0.0951 Nm/√(W)
      Maximum Peak Current 205+ A (2 s)
      Maximum Peak Power 4,550+ W (2 s)
      Maximum Continuous Current* 125+ A (180 s)
      Maximum Continuous Power* 2,775+ W (180 s)
      Maximum Efficiency 92%
      Voltage Range 14.8 V (4S LiPo) - 34.8 V (8S LiHV)
      Io (@10V) 3.3 A
      Rm (Wind Resistance) 0.007 Ω
      Magnetic Poles 10 (12S10P)
      Bearings Quad, 696ZZ/MR106ZZ
      Mount Pattern M4 x ф30 mm, M3 x ф25 mm
      Stator Class 3528, 3T+3T, YY
      Stator Windings 16-Strand, ф0.38 mm
      Shaft Diameter ф6 mm (ф6 mm Internal)
      Shaft Length 40.5 mm
      Motor Dimension ф46 mm x 52 mm
      Motor Weight 300 g (325 g with Wire Leads)
      Motor Leads 13 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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