TheRAF 2 was a Britishair-cooled, nine-cylinderradial engine developed foraircraft use just prior toWorld War I; it was designed and built by theRoyal Aircraft Factory.^[1]

• Royal Aircraft Factory B.E.8

Data fromLumsden^[2]

• Type: 9-cylinder, single-row, radial engine
• Bore: 3.94 in (100 mm)
• Stroke: 5.51 in (140 mm)
• Displacement: 604.6 cu in (9.9 L)

• Valvetrain: Poppet valve
• Cooling system: Air-cooled
• Reduction gear: 0.563:1, geared epicyclic, right-hand tractor

• Power output: 120 hp (90 kW)
• Specific power: 0.2 hp/cu in (9.2 kW/L)

Related lists

• List of aircraft engines

• Aircraft air-cooled radial piston engines
• 1910s aircraft piston engines