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Scorpion Brushless Motors 55mm Series

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The Scorpion 55mm series motors have been designed to fit larger models that would normally require a 30cc to 50cc gasoline motor. 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 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 °C (356 °F). The magnets used in Scorpion Motors are N-50EH style, which are rated for operation at 200 °C (392 °F), making a motor that is virtually impossible to burn up in normal use.

All Scorpion 55mm motors come with 4mm male bullet style connectors already attached, and include a complete hardware package that contains the following: 3 matching female Bullet connectors for your speed controller, a cross style backplate mount with 4 screws, a thrust washer with tapered collar, a spacer collar that allow you to move the prop forward if needed, a heavy duty prop washer, a prop nut and two prop lock nuts that have threaded tips for use with a spinner.

Scorpion have commissioned Louis Fourdan to create a special version of his motor calculator. This is an awesome tool which allows you to play around with various power and prop configurations on different motors to see how they will perform. You may download the latest version from here.

Click on image for a larger version.

Scorpion S-5545 Overview Tech Drawing 5545-150 5545-180 The "Big Boy" in the 55mm series is the 5545 model. This motor is available in 2 Kv values: 150 and 180, and with power input in the 4000 to 4500 watt range, or roughly equal to a 50cc petrol motor. Motor Kv Imax Pmax 10S prop 12S prop 5545-150: 150Kv 90A 3800W 29x12 25x12   5545-180: 180Kv 105A 4500W 24x12 20x12   Click on image for a larger version. Stator Diameter 55 mm Stator Thickness 35 mm No. of Stator Arms 18 No. of Magnet Poles 20 Motor Wind 10 Turn Delta Motor Wire 29-Strand 0.25mm (30 AWG) Motor Kv 150 RPM / Volt No-Load Current (Io) 1.31A Motor Resistance (Rm) 0.024 Ohms Max Continuous Current 90 Amps Max Continuous Power 3800 Watts Weight 1002 grams Outside Diameter 65.4 mm Shaft Diameter 8 mm Body Length 89.3 mm Overall Shaft Length 137.5 mm Stator Diameter 55 mm Stator Thickness 35 mm No. of Stator Arms 18 No. of Magnet Poles 20 Motor Wind 8 Turn Delta Motor Wire 30-Strand 0.25mm (30 AWG) Motor Kv 180 RPM / Volt No-Load Current (Io) 1.92A Motor Resistance (Rm) 0.019 Ohms Max Continuous Current 105 Amps Max Continuous Power 4500 Watts Weight 1002 grams Outside Diameter 65.4 mm Shaft Diameter 8 mm Body Length 89.3 mm Overall Shaft Length 137.5 mm £ 210.00 Select wind: 5545-150 (150Kv) : no stock 5545-180 (180Kv) : no stock