Radial Engine, 7-Cylinders, Cutaway

cults3d

This model of the Radial Engine with 7-cylinders was specifically designed for old aircraft. It features several fundamental mechanisms that make it an ideal teaching tool for beginner engineers and students. A. Features of this model include: 1. A cutaway model of the entire engine, which allows viewers to see its internal workings. 2. Reduction gears (planetary), cam and drive gears, crankshaft and rod assembly, cylinder and piston with valve mechanism, supercharger gears and impeller. 3. Air intake and exhaust pipes are also included in this model. 4. Simplified accessories such as the propeller hub with half blades, carburetor, magneto and starter are part of this model. 5. The engine can be rotated, but it is not perfectly smooth due to resistance from the valve mechanism and friction. B. Print and parts information: There are approximately 80 STL parts in this model, along with many hardware components including bearings. These hardware components can be easily purchased at a DIY shop or online store and replaced with equivalent similar parts if needed. All parts data is included in the manual, which can be accessed through the numerical index. However, it takes a long time to print all the parts, treat them after printing, and assemble them together. The STL file name for this model starts with "ws," which stands for "With Support." This special design requires additional support from the slicer in certain areas. More information can be found in the "Remarks" column. Estimated net print time for this model is over 90 hours. C. Assembly manual: The assembly manual for this model includes detailed instructions on how to assemble the parts, including a list of all the necessary parts and tools required for the job. However, some parts require finishing and machining (filing, drilling, and tapping) before they can be assembled together properly. Additionally, there are many fits that need adjustment in terms of clearance and tightening using various hardware components. Some sample manual pages are shown in photos, which can also be used as a guide for disassembling and reassembling the engine just like an overhaul. D. General Notes: 1. For M1.4 screws, no tapping is required. Instead, drill with a φ1.0 drill and then screw directly into place. 2. When screwing into aluminum pipes, insert the screw into the pipe end and squeeze the pipe using pliers to secure it in place. 3. Small diameter shaft parts: To maintain their strength, use 100% infill when printing and apply adhesive for acrylic resin. Recommended drills and taps include: * Drill: 1.0, 1.5, 2.0, 2.5, 3.0, 3.2, 5.0, 5.2, 7.2 * Tap: M2, M3 3D printing settings such as raft, support, layer height, and infill can vary depending on experience. However, for parts with gears, small shafts, and thin portions, 100% infill is highly recommended. My models were printed using an idbox with a 0.4 nozzle and 1.75 PLA material. Before downloading this model, please carefully review the photos and consider your options thoroughly. I wish you success in printing and assembling this model!