The 1917 Cleveland 4 six-cylinder aero-engine designed by Walter C Willard was a 150hp 706.86ci air-cooled radial. Unique concept of each piston operating a bevel gear, which in turn meshed with a main gear to drive the propshaft. Also reportedly produced as 140hp.
Piston
Cleveland Aero Motor Co
Cleveland OH.
USA
Bulit the Cleveland 4 six-cylinder aero-engine in 1917.
Clergêt 1910 monoplane
The 1910 Clerget monoplane was designed and built by Pierre Clerget in France.
Span: 36’1″
Length: 49’11”
Clergêt 1909 Monoplane
Designed and built by Pierre Clerget in France, in 1909.
Span: 29’6″
Length: 32’10”
Clergêt Etrich Taube Aman
The Clerget-Etrich Taube Aman was a slightly modified version of the Etrich IV Taube license-built by Clerget in France for whose name appeared on the tail, Gustave Aman. Powered by an inline Clerget engine, it was completed in August but first flown in October 1910.
Clergêt V-8
The Moteur Clerget 200 HP Type V-8 engines has OHV gear.
The Clerget engine valves are actuated by one substantial single rocker arm and pushrod assembly per cylinder that operates both valves. The flat section coiled valve springs design is of conical shape. This is just one of many different experimental types of valve springs that were tried in the early development of the poppet valve engine.
Clergêt 4W
A Moteur Clerget Type 4W 100 HP, as used in Hanriot craft.
Clergêt 16X
Clerget are best known for their well engineered rotary engines produced from 1911 to the end of World War I in 1918, the first of their type to deliver fuel-air mixture to the cylinder heads by external induction tubes via externally push rod operated inlet valves. They later made a series of static radial aircraft diesel engines. The experimental 16X was a departure from all of these, first run in 1918. Despite contemporary descriptions as a radial engine, it was in more modern terms an X-type, four stroke water-cooled petrol engine, essentially two 90° V-8 cylinder engines, one inverted, coupled to a common output shaft.
Type: 16-cylinder X-type piston engine, with four 4-cylinder banks separated by 90°. Single sparking plug on the upper side of each cylinder.
Bore: 130 mm (5.1 in)
Stroke: 130 mm (5.1 in)
Displacement: 27.6 l (1,684.26 cu in)
Length: 1,306 mm (51.42 in)
Diameter: 512 mm (20.16 in)
Dry weight: 340.2 kg (750 lb)
Valvetrain: Two overhead valves per cylinder, each operated via a long push-rod worked by one camshaft per cylinder bank. Side inlet and exhaust ports.
Fuel system: Separate carburettors mounted between upper and between lower cylinder bank, each feeding their pairs of banks. Single sparking plug in upper side of each cylinder.
Fuel type: Petrol
Cooling system: Water, centrifugally pumped.
Power output: 313 kW (419.74 hp) at 1,600 rpm
Compression ratio: 5:1
Fuel consumption: 0.48 l/kW/h (0.079 imp gal/hp/h; 0.095 US gal/hp/h)
Oil consumption: 0.038 l/kW/h (0.0063 imp gal/hp/h; 0.0076 US gal/hp/h)
Clergêt 11Eb
The Clerget 11Eb was an 11-cylinder rotary aircraft engine of the World War I era designed by Pierre Clerget. Powering Sopwith types it was nominally rated at 200 horsepower (150 kW). First run in 1918, the unit cost was £1,663.
Applications:
Sopwith Bulldog
Sopwith Hippo
Sopwith Salamander
Specifications:
Clerget 11Eb
Type: 11-cylinder air-cooled rotary engine
Bore: 120 mm (4.72 in)
Stroke: 190 mm (7.48 in)
Displacement: 21.49 l (1,311.40 cu in)
Dry weight: 232 kg (511 lb)
Valvetrain: 1 each overhead inlet and exhaust valves operated by pushrods and rockers
Fuel system: Bloctube carburettor
Fuel type: Gasoline with Castor oil lubricant
Oil system: Castor oil mixed with fuel
Cooling system: Air-cooled
Power output: 160.33 kW (215 hp) at 1,300 rpm (maximum power)
Specific power: 0.1639 hp/cu in (7.46 kW/l)
Compression ratio: 5.1:1
Specific fuel consumption: 0.518 l/kW/hour (0.68pt/hp/hour)
Oil consumption: 0.0838 l/kW/hour (0.11 pt/hp/hour)
Power-to-weight ratio: 0.694 kW/kg (0.421 hp/lb)
Clergêt 9B
First run in 1913, the Clerget 9B was a nine-cylinder rotary aircraft engine of the World War I era designed by Pierre Clerget. Manufactured in both Great Britain (Gwynne Limited) and France, it was used on such aircraft as the Sopwith Camel. The unit cost of the 9B was £907.50 in 1915. British production totalled 3,650.
The Clerget 9Bf was an increased stroke version.
Variants:
Clerget 9B
(1913) 130 hp (97 kW). 1,300 produced by Ruston Proctor & Co Ltd of Lincoln
Clerget 9Bf
(1915) 140 hp (104 kW). Extended stroke (172 mm (6.75 in)) version, increasing capacity to 17.5 lt (1,066.5 cu in). 1,750 produced by Gwynnes Ltd. and 600 produced by Ruston Proctor.
Applications:
Clerget 9B
Armstrong Whitworth F.K.10
Avro 504
Avro 531
Bristol M.1
Cierva C.6
Cierva C.8
Fairey Hamble Baby
Nieuport 12
Nieuport 17
Nieuport Triplane
Sopwith Baby
Sopwith Camel
Sopwith Scooter
Sopwith Triplane
Sopwith 1½ Strutter
Clerget 9Bf
Sopwith Camel
Specifications:
Clerget 9B
Type: Nine-cylinder air-cooled rotary engine
Bore: 120 mm (4.72 in)
Stroke: 9B: 160 mm (6.30 in), 9Bf: 172 mm (6.77 in)
Displacement: 9B: 16.29 l (994.08 cu in), 9Bf: 17.5 l (1,067.92 cu in)
Length: 920 mm (36.22 in)
Diameter: 9B: 1,020 mm (40.15 in), 9Bf: 1,030 mm (40.55 in)
Dry weight: 173 kg (381 lb)
Valvetrain: Single inlet and exhaust valves operated by pushrods and rockers
Fuel system: Bloctube carburettor
Fuel type: Gasoline mixed with Castor oil lubricant
Oil system: Castor oil mixed with fuel
Cooling system: Air-cooled
Power output: 9B: 96.94 kW (130 hp) at 1,250 rpm, 9Bf: 104.40 kW (140 hp) at 1,250 rpm
Specific power: 9B: 0.1308 hp/cu in (5.953 kW/l), 9Bf: 0.131 hp/cu in (5.966 kW/l)
Compression ratio: 9B: 4.56:1, 9Bf: 5.3:1
Specific fuel consumption: 9B: 0.564 l/kW/hour(0.74 pt/hp/hour), 9Bf: 0.45 l/kW/hour(0.59 pt/hp/hour)
Oil consumption: 9B: 0.0686 l/kW/hour (0.09 0.11 pt/hp/hour), 9Bf: 0.0838 l/kW/hour (0.11 pt/hp/hour)
Power-to-weight ratio: 9B: 0.563 kW/kg (0.341 hp/lb), 9Bf: 0.556 kW/kg (0.337 hp/lb)
