Liberty L-8
The Liberty L-8 (also known as the Packard 1A-1100) was a prototype of the Liberty L-12 engine designed by Jesse Vincent and Elbert Hall. Fifteen L-8 prototypes were manufactured by several companies including Buick, Ford, Lincoln, Marmon, and Packard in 1917.[1][2] The first of those built now resides in the National Air and Space Museum in Washington, D.C., while fifteenth L-8 (the only running example) powers Liberty the Second housed by the Conneaut Lake Historical Society in Conneaut Lake, PA.[3] Another L-8 is stored at the National Museum of the U.S. Air Force in Dayton, OH.[4]
| Liberty L-8 | |
|---|---|
 | |
| First ever Liberty L-8 aircraft engine, on display at the National Air and Space Museum | |
| Type | Piston aircraft engine |
| National origin | United States |
| Manufacturer | Packard |
| Designer | Jesse G. Vincent and Elbert J. Hall |
| First run | c. 1917 |
| Variants | Liberty L-4, Liberty L-6, Liberty L-12 |
Specifications (Liberty L-8)
Data from National Air and Space Museum,
General characteristics
- Type: 8-cylinder, liquid-cooled Vee aircraft piston engine
- Bore: 5 in (127 mm)
- Stroke: 7 in (178 mm)
- Displacement: 1,099.6 cubic inches (18.0 L)
- Length: 57 inches (1,448 mm)
- Dry weight: 575 pounds (260.8 kg)
Components
- Valvetrain: One intake and one exhaust valve per cylinder, actuated via a single overhead camshaft per cylinder bank.
- Cooling system: Liquid-cooled
Performance
- Power output: 290 hp (216 kW) at 1,700 rpm
- Specific power: 0.26 hp/in³ (11.9 kW/L)
- Power-to-weight ratio: 0.45 hp/lb (0.74 kW/kg)
References
Wikimedia Commons has media related to Liberty L-8.
- "Liberty L-8 (Packard) V-8 Engine | National Air and Space Museum". airandspace.si.edu. Retrieved 2015-11-12.
- "Liberty L-8 > National Museum of the US Air Force > Display". www.nationalmuseum.af.mil. Retrieved 2015-11-12.
- "Liberty the Second". conneautlakehistory. Retrieved 2015-11-12.
- "Liberty L-8 > National Museum of the US Air Force > Display". www.nationalmuseum.af.mil. Retrieved 2015-11-12.
- "Liberty L-8 (Packard) V-8 Engine". Smithsonian National Air and Space Museum. Retrieved 1 January 2011.
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