$25.00Radial Engine, Rotary, 1910s

myminifactory

This model is a model of an aviation piston engine used in aircraft in the 1910s, more than 100 years ago.While the material and processing technology has not been developed, it has the structure that has been conceived with wisdom.There were various similar engines in this era, but this model has the following features.① Rotating Cylinder (for cooling purpose) and Cases (mostly made of steel and machined)② Crankshaft fixed to the fuselage③ Valve arrangement - Inlet valve: Built in the top of the Piston, opened and closed by the internal pressure of the cylinder. - Exhaust valve: Mounted on the top of the Cylinder, opened and closed with a push rod.③ Exhaust valve opening / closing gears, plate cams and tappets④ Gear unit for driving High-pressure Magnetic Generator (Magneto), Lubricating Oil Pump⑤ Intake tube and throttle valve connected to the inside of the crankcase.⑥ Ignition Distributor, Cable, Spark plug⑦ Wooden Propeller (dummy) Add the hand-turn knob (tool) (Magneto, Oil pump)In addition, the device that rotates with a 6V battery motor can be added. (See video)[Note] : If you installed motor, turn knobs can not be used because the rotating drag of motor reduction gears is too big.It is a rotation model, but the inside can be partially observed. [Video]https://youtu.be/O4Ij_dINLuE B. Assembly Manual (PDF format, total 29 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; - Bearings- 6800ZZ(x2), 6801ZZ(x1), 6803ZZ(x1), 6804ZZ(x1), WBC6-12ZZ(1) - Aluminum Tubes φ2, 3, 5, 6, 12 - See Parts List - Screws Micro screws M1.4x3.5L & M1.4x6L - Direct screw-in to 1 mm dia hole (No nut) But if you have the M1.4 Tap, it will be very useful. Screws M2 x ** -, M3 x ** - See Parts List D. STL file Total STL files are 58 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. 76 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. I do hope your success!!