Rotex Electric REB 90
# Rotex Electric REB 90

The Rotex Electric REB 90 is a Czech electric motor for powering electric aircraft, designed and produced by Rotex Electric of Prague.

## Design and development

The REB 90 is a brushless 350 volt design producing 80 kW (107 hp). The low working rpm of 1800-2400 means that it can turn a propeller at efficient speeds without the need for a reduction drive.

## Specifications (REB 90)

Data from Tacke and manufacturer

### General characteristics

* Type: Brushless electric aircraft engine
* Length: 212 mm (8.3 in)
* Diameter: 270 mm (10.6 in)
* Dry weight: 20 kg (44.1 lb)

### Components

* Cooling system: air or liquid
* Reduction gear: none

### Performance

* Power output: 80 kW (107 hp) at 2400 rpm
* Voltage: V nominal
* Power-to-weight ratio: 4.0 kW/kg
