Lycoming O-145

Last updated
O-145
Lycoming O-145 B2.jpg
Preserved Lycoming O-145
Type Piston aero-engine
National originUnited States
Manufacturer Lycoming Engines
First run1933
Major applications Piper J-3 Cub
Piper J-5
Piper PA-15 Vagabond
Aeronca Chief family
Produced1938-1949
Developed into Lycoming O-233
Lycoming O-235

The Lycoming O-145 is a family of small, low-horsepower, four-cylinder, air-cooled engines. It was Lycoming Engines' first horizontally opposed aircraft engine and was produced from 1938 until the late 1940s. The family includes the reduction-geared GO-145. [1] [2] [3] The O-145 received its Approved Type Certificate on 13 Jun 1938.

Contents

Design and development

The O-145 was produced in three major versions, the O-145-A rated at 55 hp (41 kW), the -B rated at 65 hp (48 kW), and -C rated at 75 hp (56 kW). The "B" model was the major production model, with the "A" and "C" produced in much smaller quantities. [1] [2]

All models of the series had the same bore, stroke, and displacement, additional horsepower being generated by increasing compression ratio and maximum rpm. All use a Stromberg NA-S2 or NA-S2A or Marvel MA-2 or MA-2-A carburetor. The dual ignition versions use two Scintilla SF-4L, SN4LN-20 or -21, Superior SMA-4 or Edison-Splitdorf RMA-4 magnetos. [1] [2]

The original O-145-A produced 55 hp (41 kW) at 2300 rpm, weighed 165.5 lb (75 kg), and featured single ignition. In an attempt to compete with the Continental A-65, Lycoming boosted the rpm and power output to 65 hp (48 kW) at 2550 rpm, and finally 75 hp (56 kW) at 3100 rpm. The O-145 had a hard time competing with the same horsepower Continentals due to its smaller displacement, which resulted in a steeper torque curve. [1] [3]

The GO-145 is a geared model, introduced in 1938, that uses a 27:17 reduction ratio (1.59:1) gearbox to produce 75 hp (56 kW) at 3200 crankshaft rpm, giving 2013 propeller rpm. The engine employs a gearbox bolted to the front of the engine and the resulting engine weighs 193 lb (88 kg) without starter or generator. The GO-145 suffered from a poor reputation for reliability, because pilots mis-handled the engine, running it at too low a cruising rpm and causing gearbox wear as a result. [1] [2] [3] [4]

The series' type certificate expired on 2 November 1950 and no O-145-B1 or -C1 or GO-145-C1s engines produced after 1 August 1941 and O-145-B2, -B3 or -C2, or GO-145-C2 or -C3s produced after 24 August 1949 are eligible for certification. The single ignition O-145-A series, O-145-B1, and -C1 are not covered by the original type certificate. [1]

Lycoming ended production of the O-145 and replaced it with the O-235 series. [3]

Variants

O-145-A
Four-cylinder, direct drive, 55 hp (41 kW), single ignition [2]
O-145-A3
Four-cylinder, direct drive, 55 hp (41 kW), single ignition, with starter and generator installed [3]
O-145-B on display at the Air Zoo Air Zoo December 2019 149 (Lycoming Model O-145-B).jpg
O-145-B on display at the Air Zoo
O-145-B1
Four-cylinder, direct drive, 65 hp (48 kW) at 2550 rpm, single ignition, 155 lb [1]
O-145-B2
Four-cylinder, direct drive, 65 hp (48 kW) at 2550 rpm, dual ignition, 166 lb [1]
O-145-B3
Four-cylinder, direct drive, 65 hp (48 kW) at 2550 rpm, dual ignition, 169 lb [1]
O-145-C1
Four-cylinder, direct drive, 75 hp (56 kW) at 3100 rpm, single ignition, 155 lb [1]
O-145-C2
Four-cylinder, direct drive, 75 hp (56 kW) at 3100 rpm, dual ignition, 166 lb [1]
GO-145-C1
Four-cylinder, reduction gearbox, 75 hp (56 kW) at 3200 rpm, single ignition, 182 lb [1]
GO-145-C2
Four-cylinder, reduction gearbox, 75 hp (56 kW) at 3200 rpm, dual ignition, 193 lb [1]
GO-145-C3
Four-cylinder, reduction gearbox, 75 hp (56 kW) at 3200 rpm, dual ignition, 195 lb [1]

Applications

O-145
GO-145

Specifications (GO-145-C2)

Data from Type Certificate 210 [1]

General characteristics

Components

Performance

See also

Comparable engines

Related lists

Related Research Articles

Piper J-3 Cub Family of light aircraft

The Piper J-3 Cub is an American light aircraft that was built between 1938 and 1947 by Piper Aircraft. The aircraft has a simple, lightweight design which gives it good low-speed handling properties and short-field performance. The Cub is Piper Aircraft's most-produced model, with nearly 20,000 built in the United States. Its simplicity, affordability and popularity invokes comparisons to the Ford Model T automobile.

Continental O-200

The Continental C90 and O-200 are a family of air-cooled, horizontally opposed, four-cylinder, direct-drive aircraft engines of 201 in³ displacement, producing between 90 and 100 horsepower.

Continental O-300

The Continental O-300 and the C145 are a family of air-cooled flat-6 aircraft piston engines built by Teledyne Continental Motors.

Continental O-170

The Continental O-170 engine is the collective military designation for a family of small aircraft engines, known under the company designation of A50, A65, A75 and A80. The line was designed and built by Continental Motors commencing in the 1940s. It was employed as the powerplant for civil and military light aircraft.

Lycoming O-235 Family of four-cylinder, air-cooled, horizontally opposed piston engine

The Lycoming O-235 is a family of four-cylinder, air-cooled, horizontally opposed piston aircraft engines that produce 100 to 135 hp, derived from the earlier O-233 engine.

Taylorcraft B

The Taylorcraft B is an American light, single-engine, high-wing general aviation monoplane that was built by the Taylorcraft Aviation Corporation of Alliance, Ohio.

Continental O-190 Series of small American piston aircraft engines

The Continental O-190 is a series of engines made by Continental Motors beginning in the 1940s. Of flat-four configuration, the engines produced 75 hp (56 kW) or 85 hp (63 kW) respectively.

Aeronca 50 Chief

The Aeronca Model 50 Chief was an American light plane of the late 1930s. Consumer demand for more comfort, longer range and better instrumentation resulted in its development in 1938, powered by a 50-horsepower (37-kilowatt) Continental, Franklin or Lycoming engine. A 65-horsepower (48-kilowatt) Continental engine powered the Model 65 Super Chief, which was also built in a flight trainer version, the Model TC-65 Defender, with its rear seat positioned nine inches higher than the front for better visibility.

Auster Arrow 1940s British light aircraft

The Auster J/2 Arrow is a 1940s British single-engined two-seat high-wing touring monoplane built by Auster Aircraft Limited at Rearsby, Leicestershire, England.

Franklin O-150

The Franklin O-150 was an American air-cooled aircraft engine of the late 1930s. The engine was of four-cylinder, horizontally-opposed layout and displaced 150 cu in (2 L). The power output was nominally 40 hp (30 kW).

The Franklin O-175 was an American air-cooled aircraft engine of the 1940s. The engine was of horizontally-opposed four-cylinder and displaced 175 cu in (2.9 L). The power output was nominally 80 hp (60 kW). A later variant was designated O-180, despite sharing the same displacement.

Lycoming O-290

The Lycoming O-290 is a dual ignition, four-cylinder, air-cooled, horizontally opposed aircraft engine. It was first run in 1939, and entered production three years later.

Porterfield Collegiate

The Porterfield Collegiate is an American-built two-seat training and touring monoplane built by the Porterfield Aircraft Corporation of Kansas City.

Continental A40

The Continental A40 engine is a carbureted four-cylinder, horizontally opposed, air-cooled aircraft engine that was developed especially for use in light aircraft by Continental Motors. It was produced between 1931 and 1941.

Continental O-240 1970s American aircraft piston engine

The Continental O-240 engine is a four-cylinder, horizontally opposed, air-cooled aircraft engine that was developed in the late 1960s for use in light aircraft by Continental Motors, Inc. The first O-240 was certified on 7 July 1971.

HKS 700E

The HKS 700E is a twin-cylinder, horizontally opposed, four stroke, carburetted aircraft engine, designed for use on ultralight aircraft, powered parachutes and ultralight trikes. The engine is manufactured by HKS, a Japanese company noted for its automotive racing engines.

Taylorcraft D

The Taylorcraft Model D is a light aircraft of the US manufacturer Taylorcraft Aviation from the early 1940s.

Massey Aerodrome

Massey Aerodrome is an airport located 2 miles (3 km) east of Massey, Maryland, United States.

Massey Air Museum at Massey Aerodrome is an aviation museum near Massey, Maryland, United States.

The MWfly B25 is a family of Italian aircraft engines, designed and produced by MWfly of Passirana di Rho for use in light aircraft.

References

  1. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Federal Aviation Administration (August 1949). "Approved Type Certificate 210" . Retrieved 2008-12-21.
  2. 1 2 3 4 5 Christy, Joe: Engines for Homebuilt Aircraft & Ultralights, pages 64-65 TAB Books, 1983. ISBN   0-8306-2347-7
  3. 1 2 3 4 5 6 7 8 9 Boggs, Jerry (n.d.). "Super KR-1" . Retrieved 2008-12-21.
  4. ↑ Rotor & Wing (January 2005). "Lycoming Engines". Archived from the original on 2009-04-14. Retrieved 2008-12-21.
This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.