Scorpion HKII-4225-550KV Limited Edition

Product Description :

With the trend of ultra light weight 700 size models on the rise, the market called for a light weight, yet ultra powerful motor.
So Scorpion brought back the HKII-4225-550kv for a Limited Edition run!
Sized directly between our proven HKIV-4025 and HKII-4525 motors in terms of weight and power, and LIGHTER yet MORE powerful then our competitors 4030 motors, this motor represents the most technologically advanced power source ever offered for an electric helicopter.

Each of the new HKII-4225 Limited Edition motor is hand wound with a single strand of 1.35mm wire for the highest possible efficiency.
This motor is capable of running continuously at an input power of 3550 watts at 80 amps, and can handle peak inputs of 5770 watts and 130 amps.
Perfect for a Light weight 700 size, or monster 600 size power system on 12s.

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-Plated to provide a beautiful, long-lasting

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 rated for operation at 200 degrees C \(392 F\), making a motor that is virtually impossible to burn up in normal use.

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.

Specifications :
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 Wind 5T/6T Delta
Motor Wire 1-Strand 1.35 mm
Motor Kv 550KV RPM/Volt
No-Load Current \(Io/10V\) 1.77 Amps
Motor Resistance \(RM\) 0.016 Ohms
Max Continuous Current 80 Amps
Max Continuous Power 3550 Watts
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 91.5 mm \(3.60 in\)
Max Lipo Cell 12s
Max Peak Current 130 Amps \(5 seconds\)
Max Peak Power 5770

\(5 seconds\)
Motor Timing 5deg
Drive Frequency 8kHz

Included :
* Gold connectors are not soldered nor included