Scorpion HKIII-4025-890 Brushless Motor w/6mm Shaft (2960W, 890Kv)

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This is the Scorpion HKIII-4025-890 Brushless Motor. The Scorpion HKIII-4025 Series Motor is designed for use with 600 class helicopters running on 6 to 8S Li-Po power. This motor represents the most technologically advanced power source ever offered for a 600 class electric helicopter.

Scorpion Competition 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 machines. These parts are then gold Electro-Coated 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 C (356 F). The magnets used in Scorpion Motors are custom manufactured to be able to withstand high temperatures, making a motor that is virtually impossible to burn up in normal use.

Scorpion Motors are built to last, and are backed with a 2-Year warranty against defects in materials or workmanship. However, due to the high RPM of these motors, and the fact that Scoripion cannot control the installation and setup, the bearings are not covered by the 2-Year warranty, nor is any subsequent damage caused to the motor by a bearing failure. Bearings are a normal wear item, and as such, need to be maintained and changed periodically. For maximum life, make sure that a sufficient gap is left between the pinion and main gear during motor installation to avoid binding, and put a small drop of oil on each bearing every 5-6 flights. It is the responsibility of the pilot to ensure that the bearings are maintained properly. For the best overall combination of quality, performance, and value, use Scorpion Motors in your helicopter!

Stator Diameter: 40mm (1.57 in)
Stator Thickness: 25mm (0.98 in)
No. of Stator Arms: 12
Magnet Poles: 10
Motor Wind: 4T/4T Delta
Motor Wire: 24-Strand 0.29mm
Motor Kv: 890KV RPM/Volt
No-Load Current (IO/10v): 2.30 Amps
Motor Resistance (RM): 0.010 Ohms
Max Continuous Current: 95 Amps
Max Continuous Power: 2700 Watts
Weight: 354 Grams (10.79 oz)
Outside Diameter: 49.98mm (1.97 in)
Shaft Diameter: 5.98mm (0.24 in)
Body Length: 51.8mm (2.04 in)
Overall Shaft Length: 83.7mm (3.30 in)
Max Lipo Cell: 8s
Peak Current: 110 Amps (5 seconds)
Peak Continuous Power: 3750 Watts (5 seconds)
Motor Timing: 5
Drive Frequency: 8kHz

  • (1) Scorpion HKIII-4025-890KV Motor
  • (3) Female Connectors
  • (3) Heat Shrink
  • (4) M3 Screws

This product was added to our catalog on February 21, 2013.