Product Description

From 2010 when Scorpion HKIII-40 series is released, a lot of feedback by World Champions and pilots in all facets of the hobby are received that they have well established themselves as the Gold Standard of R/C model power!

The HKIII-4025 series motors have proven themselves to be extremely successful in heli community and has become the most popular motor used in 500~600 class helicopters world-wide.

And now we are pleased to announce the release of the fourth generation HKIV-4025 series motors. With the same motor design and materials of HKII-45 series, and single strand winding technique on this size of motor, it has the better efficiency and power conversion than HKIII-40 series, with an entirely new EM field design, while improving the compatibility with various speed controllers available on the market. This new design motor will deliver even more power to your helicopter, with increased efficiency!

Specifications

Stator Diameter	40 mm(1.57 in)
Stator Thickness	25 mm(0.98 in)
No. of Stator Arms	12
Magnet Poles	10
Motor Wind	4+4 Turn Delta
Motor Wire	1-Strand 1.6 mm
Motor Kv	850KV RPM/Volt
No-Load Current (IO/10v)	3.69 Amps
Motor Resistance (RM)	0.009 Ohms
Max Continuous Current	95 Amp
Max Continuous Power	2812 Watt
Weight	347 Grams (10.58 oz)
Outside Diameter	49.50 mm (1.95 in)
Shaft Diameter	5.98 mm (0.24 in)
Body Length	54 mm (2.13 in)
Overall Shaft Length	84.6 mm (3.33 in)
Max Lipo Cell	8s
Peak Continuous Current	110 Amps (5 seconds)
Peak Continuous Power	3256 Watts (5 seconds)
Motor Timing	5deg
Drive Frequency	8kHz

Included in the Box

1 x Scorpion HKIV-4025-850KV Motor
3 x Female Connectors
3 x Connector Cover
4 x M3 Screws
4 x M4 Screws

Weight including packaging

754g