Scorpion HKIV 4025-520kv

Description

The Scorpion HKIV-4025 motors have been developed for the newer 550 to 600 class electric helicopters that are now coming onto the market, built with the same design concepts on the larger HKII45 series of motors released in late 2017. Featuring an updated single strand winding, efficiency and power is boosted over the previous generation. Updates to the EM field design also provide enhanced compatibility with other ESC’s on the market.

These motors are designed to provide all the power that you can use, while still maintaining excellent efficiency and cool running characteristics. Scorpion HK 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 anodized 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 rated for operation at 200 degrees C (392 F), making a motor that is virtually impossible to burn up in normal use.

Specifications:

• Stator Diameter: 40mm (1.56 in)
• Stator Thickness: 25mm (0.975 in)
• No. of Stator Arms: 12
• Magnet Poles: 10
• Motor Wind: 6+7 Turn Delta
• Motor Wire: Single strand 1.2mm
• Motor Kv: 520KV RPM / Volt
• No-Load Current (IO/10v): 1.81 Amps
• Motor Resistance (RM): 0.022 Ohms
• Max Continuous Current: 65 Amps
• Max Continuous Power: 2880 Watts
• Weight: 347 Grams (10.59 oz)
• Outside Diameter: 49.5mm (1.95 in)
• Shaft Diameter: 6.0mm 
• Body Length: 54mm (2.13 in)
• Overall Shaft Length: 89.9mm (3.54 in)
• Max Lipo Cell: 12s
• Motor Timing: 5deg
• Drive Frequency: 8kHz