Radial Engine, 'Spirit of St. Louis', 1927, First Transatlantic

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"On May 21, 1927, Charles Lindbergh made the world's first solo transatlantic flight." He made efforts to raise funds to purchase a "Wright Belanca airplane" equipped with the "Wright Whirlwind engine", and although he managed to negotiate the purchase, his piloting was not recognized and the negotiations broke down.Therefore, he contracted with then-unknown Ryan Airlines (San Diego, California), and jointly developed an aircraft specialized for transatlantic flights based on the company's "single-engine postal airplane" equipped with the same engine.The aircraft was named "NYP-1" and nicknamed "Spirit of St. Louis".After completing the "NYP-1", he successfully completed a transcontinental flight from San Diego to St. Louis to New York, and he suddenly became a person of the moment because of expectations for a transatlantic flight that had continued to fail and have accidents until then.Based on the results of this transcontinental flight, an inlet heater was added to the engine, and the automatic lubricating device for the rocker arm bearings was also added.He left New York on May 20, 1927, and arrived in Paris in 33 hours and 30 minutes while battling sleepiness for 5,810 km.His book "Spirit of St. Louis" (Japanese translation "翼よ, あれがパリの灯だ") has been made into a movie and is famous all over the world.This is the functional model of the "Wright Whirlwind J-5" (220HP, 2200RPM) that succeeded in this historic flight. A. Features of this Model　① Radial type 9 cylinders　② One piece Crankshaft (Note 1)　③ One piece Crankcase and Intake Pipe Manifold　④ Split type Master Rod　⑤ 45 degree Helical Accessary Drive Gear　⑥ Intake Air Cooling Oil Tank　⑦ Inlet Air Heater　⑧ Rocker Bearing Automatic Lubricator　⑨ Metal Fixed Pitch Propeller　⑩ Manual Spark Advance Device　⑪ DC Motor Drive Tool(Note 1) This model is manufactured using the division/assembly/adhesion method. B. Assembly Manual (PDF format, total 31 pages)The detail assembly manual including "Parts-List", "After printing treatment" and "Assembly procedure" are prepared based on "Standard Skill (Filing, Drilling, Tapping and painting)". C. Purchase Parts Information; 1. Metal Bearing are used. 6900ZZ (10x22x6) x2, 675ZZ (5x8x2.5) x4. 2. Tap : M1.4, M2 3. Aluminum Pipe : φ3, 5, 7, 8 4. Rod and Wire : φ1, 1.5, 2 5. Screws : M1.4x3.5L & M1.4x6L, M2 x ** Quantity and Length can be adjusted by your experience. D. STL file Total STL files are 68 items including the stand and tools. “ws” of last 2 digits of file name means “With Support” special designed. E. Total Net Print Time: Approx. 115 HR - (Estimated as case of PLA, 0.4mm Nozzle, 0.2mm Layer Height, 40% infill and No raft and support) Note: When at actual print, each parameter may be adjusted by your experience. F. Printing settings Raft, Support, Layer Height, Infill: Depending on your experience. My models were printed by "idbox" using with 0.4 nozzle, 1.75 PLA.[Update] 2022.10.04This is one of my "Special Article" item below.[Special Article (1)]   Engines used for "Great Achievements that shine in aviation history" (5 selection)http://www7b.biglobe.ne.jp/~konchan77/99_blank146.htmlI do hope your success!!