http://www.flightglobal.com/airspace/groups/i_love_radial_engines/default.aspxThe radial engine is not going to be here forever. We want to record photos of engines and the airplanes they fly on. From leaking oil, blown cylinders and everything else that is associated with them.enCommunityServer 2008.5 SP2 (Build: 40407.4157)http://www.flightglobal.com/airspace/groups/i_love_radial_engines/media/p/83880.aspxThu, 12 May 2011 03:39:26 GMT633cdc99-ba90-4fab-88e4-2ee78cef1809:83880flyvertosset<p>The Pobjoy Niagara is a British seven-cylinder, air-cooled, radial, aero-engine first produced in 1934, with an unusual offset-from-centre propshaft due to its engine reduction gearing. The Niagara was a popular engine for light and experimental aircraft. The entire series of Pobjoy motors were seven-cylinder radials with compact dimensions and very high rpm. The entire Pobjoy range was well regarded due to its small diameter, smooth operation, low noise and innovative engineering.</p>http://www.flightglobal.com/airspace/groups/i_love_radial_engines/media/p/81953.aspxTue, 15 Mar 2011 04:55:28 GMT633cdc99-ba90-4fab-88e4-2ee78cef1809:81953flyvertosset<p>The Jacobs R-755 (company designation L-4) was a seven-cylinder, air-cooled, radial engine for aircraft manufactured in the United States by the Jacobs Aircraft Engine Company.</p> <p>The R-755 was first run in 1933 and was still in production in the 1970s. With a bore and stroke of 5.25 in &times; 5 in (133 mm &times; 127 mm) the displacement was 757 cu in (12.4 L), power ranged from 200 hp to 350 hp (150 kW - 260 kW). The engine features steel cylinders with aluminum-alloy cylinder heads. An R-755E variant was developed for use in helicopters.</p>