Renault 80 hp

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

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]

Applications

Engines on display

A preserved Renault 80 hp is on display at the Canada Aviation Museum. Another one on dislay 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" it should be noted that 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)

References

Notes

↑ British production
↑ Gunston, Bill (1998). Fedden. Rolls-Royce Heritage Trust. pp. 35–37. ISBN 1-872922-13-9. Historical Series No26.
1 2 Lumsden 2003, p. 181
↑ Gunston 1989, p. 135.

Bibliography

Gunston, Bill. World Encyclopaedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. ISBN 1-85260-163-9
Lumsden, Alec. British Piston Engines and their Aircraft. Marlborough, Wiltshire: Airlife Publishing, 2003. ISBN 1-85310-294-6.

Renault aero engines

35-40 hp V-4 45 hp V-8 60 hp V-8 70 hp Type WB 70 hp Type WC 80 hp Type WS 100 hp V-8 130 hp V-8 100 hp V-12 120 hp V-12 160 hp 190 hp V-12 200 hp V-12 265 hp V-12 438 446 454 456 468 626 4B 4P 6P 6Q 7A 8A 8B 8C 8G 9A 9C 9P 12D 12E 12F 12H 12J 12K 12M 12N 12R 12S 12T 18J Renault Bengali 4 Renault Bengali 6

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