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Scorpion HKII-4225-500KV Limited Edition


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1 922,50 kr


3 845,00 kr

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The Scorpion HKII-4225-500* Limited Edition motor for use on 600 class or light 700 class helicopters running on 12-cell Li-Po power. This motor represents the most technologically advanced power source ever offered for a 600 class electric helicopter. Each of the new HKII-4225 Limited Edition motor is wound with a single strand of 1.3mm wire for the highest possible efficiency. This motor is capable of running continuously at an input power of 3550 watts at 80 amps, and can handle peak inputs of 5770 watts and 130 amps.

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 milling machines. These parts are then gold Electro-Plated 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.

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 we 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!

*This motor is using 30mm bolt spacing on the mounting


Stator Diameter42 mm (1.65 in)
Stator Thickness25 mm (0.98 in)
No. of Stator Arms12
No. of Stator Poles10
Motor Wind12 Turn Delta
Motor Wire1-Strand 1.3 mm
Motor Kv500KV RPM/Volt
No-Load Current (Io/10V)1.62 Amps
Motor Resistance (RM)0.018 Ohms
Max Continuous Current80 Amps
Max Continuous Power3550 Watts
Weight393 Grams (13.77 oz)
Outside Diameter52.3 mm (2.06 in)
Shaft Diameter5.98 mm (0.24 in)
Body Length51.50 mm (2.03 in)
Overall Shaft Length91.5 mm (3.60 in)
Max Lipo Cell12s
Max Peak Current130 Amps (5 seconds)
Max Peak Power5770 Watts (5 seconds)
Motor Timing5deg
Drive Frequency8kHz

Included in the Box

HKII-4225-500Kv Motor
3x Female Connectors
3x Heat Shrink

Weight including packaging


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Scorpion HKII-4225-500KV Limited Edition

Scorpion HKII-4225-500KV Limited Edition