Emrax 2

The Emrax 2 is a Slovenian electric motor for powering electric aircraft and other applications, designed and produced by Emrax d.o.o of Kamnik. The company was formerly called Enstroj and based in Radomlje.^[1]

Emrax 2
Type	Electric aircraft engine
National origin	Slovenia
Manufacturer	Emrax

By May 2018 the engine was no longer advertised on the company website and seems to be out of production.^[2]

Design and development

The Emrax 2 is a brushless 200 Volt design, producing 30 to 35 kW (40 to 47 hp), with an outrunner coil. It has a 94% efficiency. The low working rpm of the engine means that it can turn a propeller at efficient speeds without the need for a reduction drive.^[1]

Variants

Emrax 2 AC

Air-cooled version, producing 30 kW (40 hp) at 3000 rpm.^[1]

Emrax 2 LC

Liquid-cooled version, producing 35 kW (47 hp) at 3000 rpm.^[1]

Specifications (Emrax 2 AC)

Data from Bayerl^[1]

General characteristics

• Type: Brushless electric aircraft engine
• Length: 86 mm (3.4 in)
• Diameter: 225 mm (8.9 in)
• Dry weight: 11.8 kg (26.0 lb)

Components

• Coil type: Outrunner
• Cooling system: air
• Reduction gear: none

Performance

• Power output: 30 kW (40 hp) at 3000 rpm
• Voltage: 200V
• Power-to-weight ratio: 7.8 kW/kg

See also

Related lists

• List of aircraft engines