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The Lycoming O-320 is a large family of naturally aspirated, 320 cu in (5.2 L) air-cooled, horizontally-opposed four-cylinder, direct-drive engines produced by Lycoming Engines. Introduced in 1953, it is commonly used on light aircraft such as the Cessna 172 and Piper Cherokee , and remains in production as of 2024.
By 1961, Lycoming produced 600 to 700 engines per month. [17] Its most successful post-war products were a series of air-cooled flat-4 and flat-6 general aviation engines. Most famous among these are the O-320 and O-360 four-cylinder engines, and the O-540 six-cylinder engine.
Lycoming O-320 mounted in a Robinson R22 Beta The R22 is a simple and tight design. The R22 uses a horizontally mounted Lycoming O-320 (O-360-J2A on the Beta II), flat-four, air-cooled, naturally aspirated, carburetor-equipped, reciprocating engine. It is fueled with 100LL grade aviation gasoline.
The Lycoming O-360 is a family of four-cylinder, direct-drive, horizontally opposed, air-cooled, piston aircraft engines. Engines in the O-360 series produce between 145 and 225 hp (110 and 170 kW), with the basic O-360 producing 180 hp (130 kW).
In 1995 the type certificate for the GA-7 was sold to SOCATA of France who intended to produce the aircraft as the TB 320 Tangara for the training market. [5] It was also to develop a variant with two Lycoming O-360-A1G6 engines of 180 hp (134 kW) each and a re-designed cockpit, it was designated the TB 360. The first Tangara was a modified ...
The construction and design rights were then sold to Shinn Engineering Inc. which built 35 improved Shinn 2150A aircraft with a 150 hp (110 kW) Lycoming O-320-A2C engine, before ceasing production in 1962. [3] The 2150A design rights were sold in 1967 to used aircraft parts supplier George Varga who formed the Varga Aircraft Corporation.
The aircraft's flying tests were successful and, in 1957, Weick was invited to join Piper at Vero Beach, and the AG-3 was renamed the PA-25 Pawnee. The engine was upgraded to a 150 hp Lycoming O-320-A1A engine. [1] Two pre-production aircraft were built at Vero Beach in 1957 and production started at Lock Haven, Pennsylvania, in May 1959. [1]
Riley Aircraft then started production of the Riley D-16 Twin Navion, that standardized the design with 150 hp Lycoming O-320 engines and other improvements. In March 1953, after 19 conversions had been carried out, Riley subcontracted production to Temco Aircraft. Temco then purchased the sole production rights, and produced a further 46 ...