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SCORPION HK-4025-1100KV [5mm Shaft]


Product Overview

The Scorpion HK-4025 motors have been developed for the newer 550 to 600 class electric helicopters that are now coming onto the market. These motors are designed to provide all the power that you can use, while still maintaining excellent efficiency and cool running characteristics.Scorpion HK Series Brushless Motors are built from the best materials available, and are designed to provide both quality and performance at an affordable price. Scorpion starts with high quality aluminum alloy parts that are produced on the latest CNC milling machines. These parts are then gold anodized to provide a beautiful, long-lasting finish. The stators are made with 0.2mm laminations to give maximum efficiency, and minimum Eddy current losses. The stators are epoxy coated to prevent shorts, and are wound with wire that is rated at 180 degrees C (356 F). The magnets used in Scorpion Motors are rated for operation at 200 degrees C (392 F), making a motor that is virtually impossible to burn up in normal use.


  • For the best overall combination of quality, performance, and value, use Scorpion Motors in your helicopter!


  • Stator Diameter: 40 mm (1.56 in)
  • Stator Thickness : 25 mm (0.98 in)
  • No. of Stator Arms : 12
  • No. of Stator Poles : 8
  • Motor Wind : 6 Turn Delta
  • Motor Wire : 27 - Strand 0.29mm
  • Motor Kv : 1100KV RPM / Volt
  • No-Load Current (Io/10V) : 2.40 Amps @ 10v
  • Motor Resistance (RM) : 0.008 Ohms
  • Max Continuous Current : 100 Amps
  • Max Continuous Power : 2200 Watts


  • Weight : 326 Grams (11.50 oz)
  • Outside Diameter : 48.9 mm (1.9 in)
  • Shaft Diameter : 4.98 mm (0.19 in)
  • Body Length : 51.5 mm (2.01 in)
  • Overall Shaft Length : 83.7 mm (3.30 in)
  • Max Lipo Cell : 6s
  • Max Peak Current : 130 Amps (5 seconds)
  • Max Peak Power : 2750 Watts (5 seconds)
  • Motor Timing : 5deg
  • Drive Frequency : 8kHz
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