Product overview
The Scorpion HKII-4225-810kv Limited Edition (6mm 32mm) is a brushless motor intended for ultra light weight 700-size electric helicopters using 6-8s batteries. Its physical construction combines CNC-machined aluminum alloy parts with gold electroplating and epoxy-coated stators built from 0.2mm laminations. The stator measures 42 mm in diameter and 25 mm thick, with 12 arms and 10 poles. Winding wire carries a 180 degrees C (356 F) rating, while the magnets are rated for operation at 200 degrees C (392 F). These are component ratings.
Installation space must accommodate a 52.3 mm outside diameter, 51.50 mm body length and 85.5 mm overall shaft length. The shaft diameter is 5.98 mm, and the mounting uses 30mm bolt spacing. Motor weight is 393 Grams (13.77 oz). Electrical specifications include 810KV RPM/Volt, an 8s maximum LiPo configuration, 115A maximum continuous current and 3404 Watts maximum continuous power. The higher peak limits of 170 Amps and 5032 Watts each apply for 5 seconds. Motor timing is 5deg and drive frequency is 8kHz.
The supplied configuration is a motor and installation accessories: one motor, three 4mm AMASS female bullet connectors, three heat-shrink pieces, four M4 mounting bolts and three Scorpion stickers. Packaged weight is 660g. Installation requires sufficient clearance between the pinion and main gear to prevent binding. Bearings need periodic maintenance and replacement, including a small drop of oil on each bearing every 5-6 flights. The 1-Year materials and workmanship warranty excludes bearings and any subsequent motor damage caused by bearing failure.
Specifications
| Specification | Value & conditions |
|---|---|
| Product and intended application | Scorpion HKII-4225-810kv Limited Edition (6mm 32mm) brushless helicopter motor |
| Intended installation | Designed for ultra light weight 700-size electric helicopter models using 6-8s batteries.Ultra light weight 700 size models running 6-8s batteries. |
| Stator Diameter | 42 mm (1.65 in) |
| Stator Thickness | 25 mm (0.98 in) |
| No. of Stator Arms | 12 |
| No. of Stator Poles | 10 |
| Motor Wire | 1 Strand / 1.6mm |
| Motor Kv | 810KV RPM/Volt |
| No-Load Current (Io/10V) | 3.60 AmpsAt 10V. |
| Motor Resistance (RM) | 0.009 Ohm |
| Max Continuous Current | 115AContinuous operation. |
| Max Continuous Power | 3404 WattsContinuous operation. |
| Weight | 393 Grams (13.77 oz) |
| Outside Diameter | 52.3 mm (2.06 in) |
| Shaft Diameter | 5.98 mm (0.24 in) |
| Body Length | 51.50 mm (2.03 in) |
| Overall Shaft Length | 85.5 mm (3.37 in) |
| Max Lipo Cell | 8sLiPo battery configuration. |
| Max Peak Current | 170 Amps (5 seconds)5 seconds. |
| Max Peak Power | 5032 Watts (5 seconds)5 seconds. |
| Motor Timing | 5deg |
| Drive Frequency | 8kHz |
| HK Patent No. | HK1141674 |
| China Patent No. | ZL2010 2 0298704.9 |
| Taiwan Patent No. | M399539 |
| Construction and component temperature ratings | CNC-machined, gold-electroplated aluminum alloy parts; epoxy-coated stators with 0.2mm laminations; winding wire rated at 180 degrees C (356 F); magnets rated for operation at 200 degrees C (392 F). |
| Mounting bolt spacing | 30mmMotor mounting. |
| Supplied configuration and packaged weight | 1 x HKII-4225-810kv Motor; 3 x 4mm AMASS Female Bullet Connectors; 3 x Heat Shrink; 4 x M4 Mounting Bolts; 3 x Scorpion Stickers. Weight including packaging: 660g.Included equipment; weight includes packaging. |
| Warranty and exclusions | 1-Year warranty against defects in materials or workmanship; bearings and subsequent motor damage caused by bearing failure are excluded. |
| Gear clearance and bearing maintenance | Leave sufficient pinion-to-main-gear clearance to avoid binding; apply a small drop of oil to each bearing every 5-6 flights. Bearings require periodic maintenance and replacement.During installation and every 5-6 flights. |
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