CAD Models and Animations
CAD Models Created by John Riend
CAD Models Created by Stephen Stanley
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CAD Models Created by Randy Huff
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| The Lawrance L-1 was developed during 1918 for a small U.S. Navy seaplane, designed by Grover Loening and called the Kitten. The L-1 had a bore of 4.25", a stroke of 5.25", displaced 223.4 in³, produced 56.5 hp at 1,600 rpm, and weighed 147 lb. Developed further, a few L-4s were sold to the U.S. Army Air Service to power Sperry Messenger liaison airplane. |
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| Using nine cylinders that were virtually identical to the Lawrance L-series engines, the R-1, developed during 1919, displaced 670.3 in³, produced 147 hp at 1,600 rpm and weighed 438 lb. The R-1 had three Stromberg M4 carburetors, each supplying three cylinders. Four R-1s were built, and one passed a 50-hour endurance test in 1921. |
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The U.S. Navy issued Lawrance a contract on 28 Feb 1920 for five engines, which were designated J-1. This new engine was built along the same lines as the R-1, but was larger. With a bore of 4.5" and a stroke of 5.5", the J-1 displaced 787.3 in³, produced 200 hp at 1,800 rpm, and weighed 476 lb. It had a compression ratio of 5.17:1 and a specific fuel consumption of 0.556 lb/hp/hr. Drawing from experience with the R-1, the J-1 featured several design improvements that included a strengthened crankcase, thicker cylinder base flanges, a more generous fillet between the cylinder flange and skirt, larger valve springs, rocker arms, and crankshaft counterweight. Three Stromberg NA-S4 carburetors were used, more cooling fins were added to the cylinder head tops, and taller rocker arm attachment bosses were incorporated. The J-1 was a success that eventually led to the merger of Lawrance and Wright Aeronautical. More on the J-1 |
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Animations Created by Sergio Pasquali
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| Allison V-1710 | Rolls-Royce Griffon | Junkers Jumo 222 |
The Lighter Than Air Era, by Sergio Pasquali (Italian Language)
CAD Images by Ugo Vicenzi
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| Wright R-3350TC Power Recovery Turbine and Supercharger Impeller |
Wright R-3350TC Rear Cutaway |
Wright R-3350TC Sectioned View of Complete Engine |
Wright R-3350TC Longitudinal Cross Section |
Wright R-3350TC Exploded View of Front Components |
Wright R-3350TC Sectioned Rear View |
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| Fiat A80 Exploded View |
Fiat A80 Sectioned View |
Fiat A80 Exploded Rear View |
Fiat A80 Exploded Front View |
Fiat A80 Rear View |
Isotta Fraschini Asso 750 Display Presentation |
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| Isotta Fraschini Asso 750 Sectioned View |
Isotta Fraschini Asso 750 Line Drawing |
Isotta Fraschini Asso 750 Exploded View |
Isotta Fraschini Asso 750 Crankcase Detail |
Isotta Fraschini Asso 750 Crankshaft and Camshafts |
Clerget 9B Assembly Animation (from YouTube)
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