Alaska Aviation Museum - (unofficial)

Engines - Lycoming

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AAM Lycoming Engines

1st Run Brand Name Model HP Weight Built
1929 Lycoming R-680 330 515 > 26,000 Stinson L-1 Vigilant
1929 Lycoming R-680-7 330 515 Restoration Hangar
1929 Lycoming R-680-13 330 515 Blue engine stand Odom Hangar - ASM 92-21-17
1929 Lycoming R-680-13 330 515 On pallet with cowl ring, Odom Hangar - 42170944
1929 Lycoming R-680-13 330 515 Face down, on blocks, red pallet, NE corner Odom Hangar
1929 Lycoming R-680-13 330 515 yard, blue pallet
1929 Lycoming R-680-E3B 330 515 Used on AAM 1944 Stinson V-77 Gullwing
1953 Lycoming O-320 150 244 Used on: Piper Supercub
1954 Lycoming GO-480 340 498 Used on: Helio Courier, Grumman Super Widgeon
1955 Lycoming T53 1,100 688 Used on: Huey UH-1

Lycoming Engines

Lycoming Engines is a major American manufacturer of aircraft engines. With a factory in Williamsport, Pennsylvania, Lycoming produces a line of horizontally opposed, air-cooled, four, six and eight-cylinder engines including the only FAA-certified aerobatic and helicopter piston engines on the market.

The company has built more than 325,000 piston aircraft engines and powers more than half the world's general aviation fleet, both rotary and fixed wing.

Lycoming R-680 Engine

Lycoming R-680

First Run: 1929
Number Built: > 26,000
General Characteristics
Type: Nine cylinder air-cooled radial
Bore: 4 5⁄8 in 117 mm
Stroke: 4 1⁄2 in 114 mm
Displacement: 680 cu in 11.15 l
Length: 37.5 in 953.1 mm
Diameter: 43.5 in 1,104 mm
Dry weight: 515.46 lb 233.9 kg
Components
Valvetrain: 1 inlet and 1 exhaust valve per cylinder
Fuel system: Single-barrel Carburetor
Fuel type: 87 octane
Oil system: Full pressure type
Cooling system: Air-cooled
Performance
Power output: 330 hp at 2,300 rpm 246 kW
Compression ratio: 7:1
Power-to-weight ratio: 0.64 hp/lb at cruising rpm

Lycoming R-680-7

Restoration Hangar - Donated by Mike Hunt - 2018
lycoming-r-680-7

Lycoming R-680-13

On blue engine stand Odom Hangar
lycoming-r-680-bes lycoming-r-680-bes data plate

Lycoming R-680-13

On pallet with a cowl ring on top in Odom Hangar
lyc-680-odom-cowlring lyc-680-odom-cowlring data plate

Lycoming R-680-13

Face down on pallet in Odom Hangar
lyc-680-odom face down

Lycoming R-680-13

Outside in yard
lycoming-r-680-outside-data-plate.jpg lycoming-r-680-outside-pallet.jpg

Lycoming R-680-E3B

Used on AAM 1944 Stinson V-77 Gullwing
lycoming-r-680-stinson lycoming-r-680-stinson data plate

Lycoming O-320

n2869p-engine

The Lycoming O-320 is a large family of 92 different normally aspirated, air-cooled, four-cylinder, direct-drive engines commonly used on light aircraft such as the Cessna 172 and Piper Supercub. Different variants are rated for 150 or 160 horsepower (112 or 119 kilowatts). As implied by the engine's name, its cylinders are arranged in horizontally opposed configuration and a displacement of 320 cubic inches (5.24 L).

Used on: Piper Supercub

(Wikipedia) - Lycoming O-320

Lycoming O-320-A1A

First Run: 1953
Number Built:  
General Characteristics
Type: 4-cylinder air-cooled horizontally opposed piston engine
Bore: 5.125 in 130.18 mm
Stroke: 3.875 in 98.43 mm
Displacement: 319.8 cu in 5.24 l
Dry weight: 244 lb 111 kg
Components
Valvetrain: 1 inlet and 1 exhaust overhead valves per cylinder
Fuel system: Updraft Carburetor
Fuel type: Minimum grade of 80/87 avgas
Oil system: Wet sump
Cooling system: Air-cooled
Performance
Power output: 150 hp 112 kW
Compression ratio: 7:1
Power-to-weight ratio: 0.61 hp/lb 0.99 kW/kg

Lycoming GO-480

The Lycoming O-480 is a family of six-cylinder, horizontally opposed fixed-wing aircraft engines of 479.6 cubic inch (7.86 l) displacement, made by Lycoming Engines. The engine is a six-cylinder version of the four-cylinder Lycoming O-320.

All engines have an additional prefix preceding the 480 to indicate the specific configuration of the engine. Although the series is known as the “O-480”, they’re the only geared engines in the series.There are also numerous engine suffixes, denoting different accessories such as different manufacturers' carburetors, or different magnetos.

GO-480 - Normally aspirated Opposed engine, equipped with a carburetor and Gearbox at the front end of the crankshaft to drive the propeller at a lower RPM than the engine.

Used on: Helio Courier, Grumman Super Widgeon

(Wikipedia) - Lycoming O-480

Lycoming GSO-480-A1A6

First Run: 1954
Number Built:  
General Characteristics
Type: Six-cylinder air-cooled geared supercharged horizontally opposed engine
Bore: 5.125 in 130 mm
Stroke: 3.875 in 98 mm
Displacement: 479.6 cu in 7.86 l
Dry weight: 498 lb 225.9 kg
Components
Valvetrain: 1 inlet and 1 exhaust overhead valves per cylinder
Supercharger: 11.27:1 ratio, providing 48" Hg (1.6 atm / 8.8 psi) manifold pressure at sea level at maximum power
Fuel type: 100 octane rating gasoline
Cooling system: Air-cooled
Reduction gear: 77:120 (.642:1)
Performance
Power output: 340 hp at 3,400 rpm at sea level 253.5 kW
Compression ratio: 7.3:1
Helio Courier engine-data-plate
AAM Helio Courier N6319V engine data plate

1955 Lycoming T53

iroquois3_small Lycoming T53

Turboshaft aircraft engine

The Lycoming T53, (company designation LTC-1) is a turboshaft engine used on helicopters and (as a turboprop) fixed-wing aircraft since the 1950s.

It was designed at the Lycoming Turbine Engine Division in Stratford, Connecticut by a team headed by Anselm Franz, who was the chief designer of the Junkers Jumo 004 during World War II.

A much larger engine, similar in overall design, became the Lycoming T55. Both engines are now produced by Honeywell Aerospace.

Used on: Huey UH-1

(Wikipedia) - Lycoming T53

Lycoming T53

First Run: 1955
Number Built:  
Type: Turboshaft
Length: 58.4 in 1,483 mm
Diameter: 23 in 584 mm
Dry Weight: 688 lbs 312 kg
Components
Compressor: 5-stage axial compressor and 1-stage centrifugal compressor
Combustors: Reverse flow
Turbine: 2-stage high pressure turbine; 2-stage power turbine
Performance
Maximum Output Power: 1,451 shp 1,082 kWN
Overall pressure ratio: 7.4
Air mass flow: 10.7 lb/s 4.853 kg/s