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Packard 1A-1500


Packard 1A-1500


The Packard 1A-1500 was an American 12-cylinder liquid-cooled 60-degree Vee piston aircraft engine designed in 1924.
Standard equipment was a fuel pump, propeller hub attaching parts, and tool kit.
Test flown in the second prototype Douglas XO-2 it proved to be unreliable. Only 29 engines were built.


Boeing Model 15
Boeing XP-4
Curtiss Falcon
Douglas XO-2
Loening OL




Type: 12 cylinder water cooled V-type
Military Rating: 525 hp at 1900 rpm
Commercial Rating: 600 hp at 2500 rpm
Power output: 520 hp (387.8 kW) at 2,200 rpm for takeoff
Specific power: 0.27 hp/ (12.4 kW/lt)
Displacement: 1530 (24.5 lt)
Compression ratio: 5.1-1
Bore: 5 3/8 in (136.5 mm)
Stroke: 5 1/2 in (140 mm)
Length: 65 1/16 in
Width: 27 in
Height: 39 in
Weight: 800 lb
Dry weight: 720 lb (326.5 kg)
Power-to-weight ratio: 0.53 hp/lb (0.87 kW/kg)
Fuel consumption: not more than .55 lb/hp/hr
Oil consumption: not more than .025 lb/hp/hr
Valvetrain: Four valves per cylinder, overhead camshaft
Lubrication: Pressure, dry sump, double scavenged
Ignition: Delco or Scintilla dual
Carburation: Dual Strombeerg NAY 6P
Spark plugs: 2 per cylinder B.G. Hornet

Price: direct dive $12,000 – geared $17,375






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