The Renault 80 hp, or Type WS in British service, was a V-8 aero engine that first ran in 1914. The engine was manufactured in Britain by Renault Limited of West Brompton, London between August 1914 and December 1918, seven other companies, including Rolls-Royce and Brazil Straker,[2] also produced the engine.[3] The Renault V-8 engines were noted as inefficient but reliable, the inefficiency being mainly due to the excessively rich fuel/air mixture used to assist cooling.[4]

The examples and perspective in this article deal primarily with the United Kingdom and do not represent a worldwide view of the subject. The specific issue is: This engine, contrary to what Lumsden have suggested, was not primarily manufactured in UK (October 2011)

80 hp/Type WS
Renault 80 hp at the Canada Aviation Museum
Type	Air-cooled V-8 piston engine
National origin	France
Manufacturer	Renault
First run	1914
Major applications	Airco DH.6
Number built	2,216[1]
Developed from	Renault 70 hp

Applications

• Airco DH.6
• Alliance P.1
• Avro 548
• Farman MF.11 Shorthorn
• Farman F.41 and F.1,41
• Vickers F.B.7A

Engines on display

• A preserved Renault 80 hp is on display at the Canada Aviation Museum.
• A partially cut open Renault 80 hp engine is on display at the Science Museum in London (photo 1, photo 2)
• Another one on display at the Museo Nacional de Aeronautica in Morón -Buenos Aires-Argentina

Specifications (80 hp)

Data from Lumsden [3]

General characteristics

• Type: Inline air-cooled, upright, 90-degree, V-8 piston engine
• Bore: 4.13 in (105 mm)
• Stroke: 5.12 in (130 mm)
• Displacement: 548.9 cu in (9 L)
• Length: 50.6 in (1,285 mm)
• Width: 35.5 in (902 mm)
• Height: 35.3 in (897 mm)
• Dry weight: 463 lb (210 kg)

Components

• Valvetrain: Single overhead exhaust valve, single side inlet valve per cylinder.Although this valve arrangement is cited as "one side and one overhead valve," both valves are situated in a lateral pocket from/to which gases flow. Therefore both valves are "side valves" one on top of this lateral pocket and one on its bottom. There are no valves on the combustion chamber or on the overhead position.
• Fuel system: Single 32 mm Claudel-Hobson carburettor
• Fuel type: 40–50 octane petrol
• Cooling system: Air-cooled
• Reduction gear: 0.5:1, left hand tractor.(There is no proper "reduction gear". The reduction in this case is achieved due to the fact that the Airscrew is mounted on the Cam Shaft, therefore the shaft rotation speed, and so the airscrew, is half of the crank speed)

Performance

• Power output: 80 hp (60 kW) at 1,800 rpm (takeoff power)
• Specific power: 0.15 hp/cu in (6.7 kW/L)
• Compression ratio: 4.16:1
• Power-to-weight ratio: 0.17 hp/lb (0.28 kW/kg)

See also

Related development

• RAF 1
• Renault 70 hp

Comparable engines

• Curtiss OX-5

Related lists

• List of aircraft engines

References

Wikimedia Commons has media related to Renault 80 hp.

Notes

Bibliography

External links

• Instruction sur le Montage et le Réglage des Moteurs Renault Type 80 Chevaux. Engine manual (scan without plates)
• Instruction sur le Montage et le Réglage des Moteurs Renault Type 80 Chevaux. Engine manual
• Renault Moteur d'Aviation 80 Chevaux. Lyon: Imprimeries Réunies, Engine manual