Data from Jane's all the World's Aircraft 1928[1]
- Type: 9-cylinder air-cooled radial piston engine
- Bore: 4.92 in (125 mm)
- Stroke: 6.69 in (170 mm)
- Displacement: 1,144.8 cu in (18.760 L)
- Length: 38.5 in (980 mm)
- Diameter: 49.125 in (1,247.8 mm)
- Dry weight: 540 lb (240 kg)
- Fuel system: one Zenith carburetor feeding mixture to cylinders via an annular plenum and radial pipes
- Fuel type: Aviation gasolene
- Oil system: worm driven double-plunger oil pump for pressure and scavenge
- Cooling system: water-cooled
- Power output: 250 hp (190 kW) at 1,500 rpm maximum continuus; 290 hp (220 kW) at 1,750 rpm maximum
- Fuel consumption: 12 gal/h (10.0 imp gal/h; 45 L/h) at 1,500 rpm
- Oil consumption: 0.25 gal/h (0.21 imp gal/h; 0.95 L/h)
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