This is the Scorpion HK-4530-540 Limited Edition Brushless Motor. The Scorpion HK-45 series motor is designed for use on 700 class helicopters running on 12-cell LiPo power. This motor represents the most technologically advanced power source ever offered for a 700 class electric helicopter and also produces 20% more torque than the Scorpion popular HK4035 series motors and exceed 89% efficiency.
Each of the new HK-4530-540KV Limited Edition motor is wound with a single strand of 1.5mm wire for the highest possible efficiency. This motor is capable of running continuously at an input power of 4,450 watts at 100 amps, and can handle peak inputs of 10,000 watts and 225 amps for 2 seconds.
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 manufacture warranty against defects in materials or workmanship. However, due to the high RPM of these motors, and the fact that Scorpion cannot control the installation and setup, the bearings are not covered by the 2-Year manufacture 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.
Note: This motor uses a 30mm bolt spacing on the mounting, with M4 screw holes.
Stator Diameter: 45 mm (1.77 in)
Stator Thickness: 30 mm (1.18 in)
No. of Stator Arms: 12
No. of Stator Poles: 10
Motor Wind: 9 Turn Wye
Motor Wire: 1-Strand 1.5 mm
Motor kV: 540KV RPM/Volt
No-Load Current (Io/10V): 2.11 Amps
Motor Resistance (RM): 0.010 Ohms
Max Continuous Current: 115 Amps
Max Continuous Power: 4800 Watts
Weight: 565 Grams (17.25 oz)
Outside Diameter: 56.7 mm (2.23 in)
Shaft Diameter: 5.98 mm (0.24 in)
Body Length: 60.6 mm (2.39 in)
Overall Shaft Length: 100.0 mm (3.94 in)
Max LiPo Cell: 12S
Max Peak Current: 250A (2 seconds)
Max Peak Power: 11000 Watts (2 seconds)
Motor Timing: 15deg to 24 deg
Drive Frequency: 8kHz