Scorpion HKIII-4025-650 Brushless Motor

The Scorpion HKIII-4025 Series Motor is designed for using on 600 class helicopters running on 6 to 12-cell Li-Po power. This motor represents the most technologically advanced power source ever offered for a 600 class electric helicopter. 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! HK Patent No. : HK1141674 China Patent No. : ZL2010 2 0298704.9 Taiwan Patent no. : M399539 All Others Worldwide Patent : Pending 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 5T/6T Delta Motor Wire 26-Strand 0.25mm Motor Kv 650KV RPM/Volt No-Load Current (IO/10v) 1.78 Amps Motor Resistance (RM) 0.016 Ohms Max Continuous Current 65 Amps Max Continuous Power 2700 Watts Weight 354 Grams (10.79 oz) Outside Diameter 49.98 mm (1.97 in) Shaft Diameter 5.98 mm (0.24 in) Body Length 51.8 mm (2.04 in) Overall Shaft Length 83.7 mm (3.30 in) Max Lipo Cell 12s Peak Current 90 Amps (5 seconds) Peak Continuous Power 3700 Watts (5 seconds) Motor Timing 5deg Drive Frequency 8kHz Included in the Box 1 x Scorpion HKIII-4025-650KV Motor3 x Female Connectors3 x Heat Shrink4 x M3 Screws