The Emrax 268 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]

Design and development

The Emrax 268 is a brushless 250 volt design producing a peak of 230 kW (308 hp), 100 kW (134 hp) continuous, with an outrunner coil. It has a 98% 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][2]

Specifications (Emrax 268)

Data from Tacke and manufacturer^[1][2]

General characteristics

• Type: Brushless electric aircraft engine
• Length: 91 mm (3.6 in)
• Diameter: 268 mm (10.6 in)
• Dry weight: 19.9 kg (43.9 lb)

Components

• Coil type: outrunner
• Cooling system: air and/or liquid
• Reduction gear: none

Performance

• Power output: 230 kW (308 hp) peak, 100 kW (134 hp) continuous
• Voltage: 250 V nominal
• Best efficiency: 98%
• Power-to-weight ratio: 11.6 kW/kg