SkyPup Posted May 7, 2012 Share Posted May 7, 2012 Pratt & Whitney R-4360-20 first start Below, you will find a great test stand video of the Pratt & Whitney 4360 Wasp engine introduced in 1944. The engine was a 28-cylinder four-row air cooled radial engine. Each row of pistons was slightly offset from the previous, forming a semi-helical arrangement to facilitate efficient airflow cooling of the successive rows of cylinders, with the spiraled cylinder setup inspiring the engine's "corncob" nickname. A mechanical supercharger geared at 6.374:1 ratio to engine speed provided forced induction, while thepropeller was geared at 0.375:1 so that the tips did not reach inefficient supersonic speeds. Initially, it developed 3,000 horsepower; later models gave 3,500 horsepower. The 4360 powered the B-50, successor to the B-29 and later the B-36. Although reliable in flight, the Wasp Major was maintenance-intensive. Improper starting technique could foul all 56 spark plugs, which would require hours to clean or replace. As with most piston aircraft engines of the era, the time between overhauls of the Wasp Major was about 600 hours when used in commercial service. Click here: Pratt & Whitney R-4360-20 first start on Vimeo Quote Link to comment Share on other sites More sharing options...
2. Administrators Jabo Posted May 7, 2012 2. Administrators Share Posted May 7, 2012 Man, that's a BIG ol' engine. Nice vid Pup. Jabo Quote Link to comment Share on other sites More sharing options...
BadAim Posted May 8, 2012 Share Posted May 8, 2012 What a beautiful noise...... Quote Link to comment Share on other sites More sharing options...
T_O_A_D Posted May 8, 2012 Share Posted May 8, 2012 Ether pretty brave or stupid walking around the prop like that. Pretty cool vid though, one can only dream to work on such a beast. Quote Link to comment Share on other sites More sharing options...
1. DDz Quorum B16Enk Posted May 8, 2012 1. DDz Quorum Share Posted May 8, 2012 Vimeo support built in! Quote Link to comment Share on other sites More sharing options...
2. Administrators Jabo Posted May 8, 2012 2. Administrators Share Posted May 8, 2012 Ether pretty brave or stupid walking around the prop like that. I thought that when the camera started to move - didn't look like there was much clearance. Jabo Quote Link to comment Share on other sites More sharing options...
1. DDz Quorum Sid Posted May 8, 2012 1. DDz Quorum Share Posted May 8, 2012 That is one heck of an engine.......fantastic!!!! Quote Link to comment Share on other sites More sharing options...
1. DDz Quorum Painless Posted May 8, 2012 1. DDz Quorum Share Posted May 8, 2012 ~S~ Isn't that the same as the engine we saw at RENO in the "Super Corsair" Skid ? ~S~ P. Quote Link to comment Share on other sites More sharing options...
2. Administrators Jabo Posted May 9, 2012 2. Administrators Share Posted May 9, 2012 If it was the F2G - then yes it's this engine. Quote Link to comment Share on other sites More sharing options...
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