Scorpion HKIII-5025-440 Brushless Motor, Kv=440

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Scorpion HKIII-5025-440 Brushless Motor, Kv=440

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The Scorpion HKIII-5025-440 motor is mainly designed for Logo 600 SE and also for people that want to convert their .90 size glow helicopter to electric power. This motor has a maximum continuous power rating of 4200 watts at 95 amps, and a peak power rating of 5700 watts at 130 amps! The larger diameter 50mm stator allows these motors to produce insane amounts of torque.

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 0.20mm 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 N-50EH style, which are rated for operation at 200 degrees C (392 F), 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!

Scorpion HKIII-5025-440Kv Motor Specifications
Stator Diameter50.0 mm (1.56 in)
Stator Thickness25.0 mm (0.79 in)
Number of Stator Arms12
Number of Magnet Poles10
Motor Wind12 Turn Delta
Motor Wire19-Strand 0.33mm
Motor Kv Value440 RPM per Volt
No Load Current @ 10v1.15 Amps
Motor Resistance (Rm) 0.015 Ohms
Maximum Continuous Current95 Amps
Max Continuous Power4200 Watts
Motor Weight566 grams (19.96 oz.)
Outside Diameter62.1 mm (2.44 in.)
Shaft Diameter5.98 mm (0.244 in.)
Motor Body Length58.7 mm (2.31 in.)
Overall Shaft Length104.30 mm (4.11 in.)
Peak Current120A (5 seconds)
Peak Power5320 Watts (5 seconds)
Max LiPo Cell12s
Motor Timing5deg
Drive Frequency8kHz

Weight including packaging



1 x Scorpion HKIIII-5025-440KV
4 x Screws

* Gold connectors are not soldered nor included.

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