| Dyak | |
|---|---|
| |
| Sunbeam Dyak in an Avro 504K | |
| Type | Piston inline aero-engine |
| Manufacturer | Sunbeam |
| First run | May 1918 |
| Major applications | Avro 504 |
| Variants | Sunbeam Pathan |
The Sunbeam Dyak was a British inline six-cylinder, water-cooled, twin updraft carburettor engine.
It had an aluminium sump, block and cylinder head, and is an overhead camshaft design with two valves per cylinder. The output was approximately 106 horsepower (79 kW). The engine was started by turning a geared crank handle in the cockpit. The diesel-powered Sunbeam Pathan was developed from this engine.
The first Queensland and Northern Territory Aerial Services (QANTAS) aircraft in Australia (an Avro 504K) was fitted with a Sunbeam Dyak engine by the Australian Aircraft & Engineering Co. Ltd. in Mascot, New South Wales.[1]
- ^ Swopes, Bryan. "Sunbeam Dyak Archives". This Day in Aviation. Retrieved 17 December 2022.