The de Havilland Gipsy Major or Gipsy IIIA is a four-cylinder, air-cooled, inverted inline engine used in a variety of light aircraft produced in the 1930s, including the famous Tiger Moth biplane. Many Gipsy Major engines still power vintage aircraft types.
The de Havilland Gipsy Queen is a British six-cylinder aero engine of 9.2 litres (560 cu in) capacity that was developed in 1936 by the de Havilland Engine Company. It was developed from the de Havilland Gipsy Six for military aircraft use. Produced between 1936 and 1950 Gipsy Queen engines still power vintage de Havilland aircraft types today.
The de Havilland Gipsy Six is a British six-cylinder, air-cooled, inverted inline piston engine developed for aircraft use in the 1930s. It was based on the cylinders of the four-cylinder Gipsy Major and went on to spawn a whole series of similar aero engines that were still in common use until the 1980s.
The Argus As 8 was a four-cylinder, air-cooled, inverted inline aircraft engine produced in Germany by Argus Motoren in the 1930s.
The Alfa Romeo 115 was an Italian six-cylinder air-cooled inverted inline engine for aircraft use, mainly for training and light planes, based on the de Havilland Gipsy Six engine. Production totalled approximately 1,600 units. Derivatives of the 115 include the -1, bis, ter and Alfa Romeo 116.
The Alfa Romeo 110 was an Italian four cylinder air-cooled inverted inline engine for aircraft use, mainly for trainers and light aircraft. The Alfa Romeo 110 was based on the de Havilland Gipsy Major, with approximately 500 units produced. Derivatives of the 110 include the -1, ter and Alfa Romeo 111.
The Walter Minor is a family of four- and six-cylinder inverted inline air-cooled engines, developed under auspices of ing. Šimůnek and used on light aircraft. First produced in 1929, the Minor engines' family has an advanced design for the period and sports steel cylinders, aluminum heads and overhead valves, with identical bore and stroke of 105 mm (4.1 in) and 115 mm (4.5 in), respectively. Typical power ratings varied from 105 to 160 hp.
The Hirth HM 504 is a four-cylinder air-cooled inverted inline engine. The HM 504 was a popular engine for light aircraft of the 1930s-1940s, and it was used to power a number of Germany's trainer aircraft of World War II. The engine featured a cast magnesium alloy crankcase. The Hitachi Hatsukaze Model 11 was a Japanese licensed version.
The Hirth HM 60 was a four-cylinder inverted air-cooled inline aircraft engine designed in 1923 and first sold in 1924. The engine was of very high quality, and its sales success contributed to Hirth's rapid pre-war expansion. It was a popular engine for light aircraft delivering 80 hp (60 kW) at 2,300 rpm. Later Hirth engines built upon the HM 60's success and provided greater power with many of the same design features.
The Menasco Pirate series were four-cylinder, air-cooled, in-line, inverted aero-engines, built by the Menasco Motors Company of Burbank, California, for use in light general and sport aircraft during the 1930s and 1940s. The Menasco engines came in both normally aspirated and supercharged forms, with the supercharged models exhibiting superior performance at higher altitudes, with a relatively small increase in dimensions and weight. The supercharged models had the S suffix added to their designation to show supercharging.
The Elizalde Tigre IV, also known as the ENMA Tigre IV, is a Spanish four-cylinder inverted air-cooled engine designed and built by Elizalde SA shortly after the Spanish Civil War.
The Napier Javelin was a British six-cylinder inline air-cooled engine designed by Frank Halford and built by D. Napier & Son. First flown in March 1934 in the prototype of the Percival Mew Gull racing aircraft, the engine was also used in the Spartan Arrow biplane and the Percival Gull.
The Ranger L-440 are six-cylinder inline inverted air-cooled aero-engines produced by the Ranger Aircraft Engine Division of the Fairchild Engine and Airplane Corporation of Farmingdale, New York, United States. The engine was mainly produced for Fairchild's family of training aircraft in the mid-1930s.
The Blackburn Cirrus Bombardier was a British four-cylinder inline aircraft engine, developed and built by the Blackburn Aircraft company in the mid-1950s. The engine featured fuel injection.
The Renault 4P, also called the Renault Bengali Junior, was a series of air-cooled 4-cylinder inverted in-line aero engines designed and built in France from 1927, which produced from 95 hp (71 kW) to 150 hp (110 kW).
The Walter Junior was a family of four cylinder air cooled horizontally-opposed engines produced by Walter Aircraft Engines in Czechoslovakia in the 1930s for aircraft, characterised by a bore and stroke of 115 mm × 140 mm, a displacement of 5,814 cm3 (354.8 cu in) and producing roughly 78 kW (105 hp).
The Renault 6P, also called the Renault Bengali, was a series of air-cooled 6-cylinder inverted in-line aero engines designed and built in France from the late 1920s, which produced from 130 kW (180 hp) to 200 kW (270 hp).
The Renault 6Q, also called the Renault Bengali 6, is an air-cooled six-cylinder, inverted piston engine, producing about 160 kW (220 hp) continuous power. It was designed and built in France and produced for more than ten years after its homologation in 1936, with large numbers built during World War II.
The Isotta Fraschini Beta was an air cooled aircraft engine produced by the Italian engineering company Isotta Fraschini in the 1940s.
The Argus As 17 was an air cooled six-cylinder in-line aircraft engine designed by the German engineering company Argus Motoren in the 1930s. Developed from the same company's smaller As 8, the engine was produced in ratings between 200 and 280 hp. First demonstrated in 1934, it powered a number of competitors at the Challenge International de Tourisme that year, including the Messerschmitt Bf 108. Argus produced it in small numbers as German manufacturers like Messerschmitt preferring V-8 alternatives for their aircraft.
