Scorpion HK-2221-8 V2 3-cell Heli Motor

Here it is, the new V2 series HK-2221-8 motor. Improvements include better cooling with the integrated centrifugal blower fan, higher efficiency with a new stator design and a new threaded-on flux ring for more solid construction.

The HK-2221-6 and HK-2221-8 are designed for use with 3-cell Li-Po batteries, and are the most popular motors in the series. The -8 motor is the more mild of the two, and the -6 motor on 3 cells provides incredible power for your 480 Rotor-machine.

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 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 degrees C (356 F). The magnets used in Scorpion Motors are N-50EH style, which are rated for operation at 200 degrees C (392 F), making a motor that is virtually impossible to burn up in normal use.

All Scorpion HK Series 22mm motors come with 3.5mm male Bullet style connectors already attached, and include a hardware package that contains 3 matching female Bullet connectors for your speed controller, heatshrink to cover the bullet connectors and mounting screws. Since the HK series motors are primarily designed for Helicopter and Ducted Fan use, they do not include a prop adapter.



Specifications:

- Stator Diameter: 22.0 mm (0.866 in)	- Max Continuous Current: 45 Amps
- Stator Thickness: 21.0 mm (0.827 in)	- Max Continuous Power: 475 Watts
- No. of Stator Arms: 9	- Max Lipo Cell: 3S (11.1V)
- No. of Magnet Poles: 6	- Weight: 79 Grams (2.79oz)
- Motor Wind: 8 Turn Delta	- Outside Diameter: 27.9mm (1.097")
- Motor Wire: 16-Strand 0.21mm	- Shaft Diameter: 3.17mm (0.125")
- Motor Kv: 3595 RPM / Volt	- Body Length: 37.9 mm (1.492 in)
- No-Load Current: (Io) 2.31 Amps @ 10 volts	- Overall Shaft Length: 58.7mm (2.311")
- Motor Resistance: (Rm) 0.024 Ohms

- Motor Timing: 5deg
- Drive Frequency: 8kHz
- Max Pinion Gear: 12T

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 10-15 flights. It is the responsibility of the pilot to ensure that the bearings are maintained properly.

The Scorpion Motor Bearing Lubrication Kit is now available for maintaining the bearings in your helicopter motor. To view this product, please check out the Bearing Lubrication Kit.