This is 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!
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-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 custom manufactured to be able to withstand high temperatures, 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!
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 3+3 Turn Delta
Motor Wire 1-Strand 1.7 mm
Motor Kv 1100KV RPM/Volt
No-Load Current (IO/10v) 5.29 Amps
Motor Resistance (RM) 0.006 Ohms
Max Continuous Current 100 Amp
Max Continuous Power 2220 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 89.9 mm (3.54 in)
Max Lipo Cell 6s
Peak Continuous Current 130 Amps (5 seconds)
Peak Continuous Power 2886 Watts (5 seconds)
Motor Timing 5deg
Drive Frequency 8kHz
