Scorpion HKIV-4020-1320KV Brushless Motor

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-4020 series motors have proven themselves to be extremely successful in heli community, and has become the most popular motor used in 400~500 class helicopters world-wide.

And now we are pleased to announce the release of the forth generation HKIV-4020 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

Scorpion HKIV-4020-1320 Motor Specifications
Stator Diameter	40.0 mm (1.575 in)
Stator Thickness	20 mm (0.787 in)
Number of Stator Slots	12
Number of Magnet Poles	10
Motor Wind	3+4 Turn Delta
Motor Wire	1-Strand 1.70mm
Motor Kv Value	1320 RPM per Volt
No Load Current (Io)	5.74 Amps @ 10 Volts
Motor Resistance (Rm) per Phase	0.006 Ohms
Maximum Continuous Current	90 Amps
Max Continuous Power (6-cell Li-Po)	1998 Watts
Motor Weight	310 grams (10.94 oz.)
Outside Diameter	49.50 mm (1.95 in.)
Shaft Diameter	5.98 mm (0.235 in.)
Shaft Length, From Mounting Face	30.8 mm (1.21 in.)
Motor Body Length	49.2 mm (1.94 in.)
Overall Shaft Length	71.0 mm (2.79 in.)
Max LiPo Cell	6s
Peak Current	105 Amps (5 seconds)
Peak Continuous Power	2331 Watts (5 seconds)
Motor Timing	5deg
Drive Frequency	8kHz

Included in the Box

1 x Scorpion HKIV-4020-1320KV Motor
3 x Female Connectors
3 x Connector Cover
4 x M3 Screws

Weight including packaging

679g