Walter Regulus
# Walter Regulus

The Walter Regulus was a Czechoslovakian five-cylinder, air-cooled radial engine for powering light aircraft that first ran in 1934. The engine produced 186 kW (250 hp).

## Engines on display

A preserved example of the Walter Regulus engine is on display at the following museum:

* Prague Aviation Museum, Kbely

## Specifications (Regulus)

Data from Jane's all the World's Aircraft 1931

### General characteristics

* Type: 5-cylinder radial piston engine
* Bore: 135 mm (5.3 in)
* Stroke: 160 mm (6.3 in)
* Displacement: 11.45 L (699 cu in)
* Length: 1,104 mm (43.5 in)
* Diameter: 1,185 mm (46.7 in)
* Dry weight: 191 kg (421 lb)

### Components

* Valvetrain: One intake and one exhaust valve per cylinder operated by pushrods and rockers
* Fuel system: One Zenith double 50DCJ carburettor
* Fuel type: Benzine / Benzol 50:50
* Oil system: dry sump, pressure system
* Cooling system: Air-cooled

### Performance

* Power output: Normal:138 kW (185 hp) at 1,800 rpm; Maximum 170 kW (230 hp)
* Compression ratio: 5.7:1
* Specific fuel consumption: 0.282 kg/kWh (0.464 lb/(hp⋅h))
* Oil consumption: 0.013 kg/kWh (0.022 lb/(hp⋅h))
