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I shot a few photo's of my fathers latest project. It's a 1/5 scale of a Pratt & Whitney R-2800 Double Wasp18 cylinder radial engine. Plans of the scale down engine sold by Lee Hodgson. The plans come in a binder that is about 3 inches thick. It only has one casting all other parts are machined from raw stock. You do have the option of purchasing some of the gears. Dads only been working on the engine for about a month. They say it takes about 2000 hours to do all the machining. I think dad is a head of schedule. The full size R-2800 was used to power several types of fighters and medium bombers during the war, notably the US Navy's F4U Corsair, with the first prototype Corsair becoming the first-ever US fighter plane to exceed 400 mph in level flight during October 1940, the Corsair's naval rival, the Grumman F6F Hellcat, the US Army Air Forces P-47 Thunderbolt, and the twin-engined B-26 Marauder & A-26 Invader. Over 30 different planes used the R-2800 engine.