- Pobjoy R
The Pobjoy R was a British seven-cylinder, air-cooled, aircraft engine designed and built by
Pobjoy Airmotors. [Lumsden 2003, p.178.] Introduced in 1926 it was a popular engine for ultralight and small aircraft in the 1930s. A notable feature of the Pobjoy R was the propeller reduction gear which allowed the engine to operate at high RPM.
Specifications (Pobjoy R)
"Data from:" Lumsdenpistonspecs
type=7-cylinder air-cooled, radial, left-hand tractor
bore=3.03 in (77 mm)
stroke=3.43 in (87 mm)
displacement=173.05 cu in (2.84 L)
diameter=25.5 in (6477 mm)
fuelcon=4.9 imp. gallons per hour
power/weight= 1 hp/1.8 lb
Cosmopolitan Light Plane
* Couzinet 101
General Aircraft Monospar
Lippisch Delta IV
* Mauboussin M.121P Corsaire Major
Short Scion Senior
List of aircraft engines
* Guttery, T.E. "The Shuttleworth Collection". London: Wm. Carling & Co, 1969. SBN 901319-01-5
* Lumsden, Alec. "British Piston Engines and their Aircraft". Marlborough, Wiltshire: Airlife Publishing, 2003. ISBN 1-85310-294-6.
Wikimedia Foundation. 2010.