$10.00Turboshaft Engine, with Radial Compressor and Turbine

myminifactory

This model is a turboshaft engine which uses a radial compressor and a radial turbine.It's primarily used for compact engines, such as auxiliary power units or APU's.The goal was to create an engine that could be the source of shaft horsepower for other models besides just explaining its structural aspect.A home vacuum cleaner provides the power source for this model.The key features are as follows.① Radial compressor (Impeller), Diffuser② Radial turbine rotor, Turbine nozzle③ Planetary reduction gears④ Output shaft⑤ All rotating shafts use metal ball bearings.⑥ The parts have been prepared to reverse rotating direction easily.⑦ To disassemble quickly, a clamp system and finger screw are introduced.⑧ A vacuum nozzle with variable opening is used for speed control.\r\nSince it rotates well beyond expectations, it can be used as the source of power.But, the maximum allowable RPM and torque have not been verified.Please decide by self-responsibility.\r\nVideo: https://youtu.be/maxeQ6HPnNI\r\nB. Assembly Manual (PDF format, total 20 pages)The assembly manual includes detailed instructions for "Parts-List", "After printing treatment" and "Assembly procedure" based on the standard skill of filing, drilling, tapping, and painting.In order to make it rotate smoothly, careful eccentricity and gap adjustment are necessary.\r\nC. General Notes 1. Bearing Metal Ball Bearings are used for every shafts. Refer to Appendix. 2. For M1.4 Screw No need “Tapping”. Drill with φ1.0 drill then direct screw-in. 3. STL file “ws” of last 2 digits of file name means “With Support” special designed. Total STL files are 48 items including the optional items. (Vacuum Duct, Stand etc.) 4. Blending of the gear tooth profile is important to get smooth rotation.5. For the Helicopter Power Train, use the following parts as a set.- Comp-Diffuser01CCW- Impeller01CCW- Turb-Nozzle101CCW- Turbine101CCW\r\nTotal Net Print Time: Approximately 72 hours-(Estimated as case of PLA, 0.4mm Nozzle, 0.2mm Layer Height, 40% infill and No raft and support) Especially, Air-Intake-Case201mws.stl needs about 12 hours to print. Note: When at actual print, each parameter may be adjusted by your experience.\r\n3D printing settings Raft, Support, Layer Height, Infill: Depending on your experience. But the parts having gear, small shaft and thin portion: 100% infill is recommended.My models were printed by "idbox" using with 0.4 nozzle, 1.75 PLA.\r\n[Update] 2019.05.07 gear-carrier102.stl changed. 2019.05.09 Assy-Manual typo revised. 2019.06.29 Gear-BRG-Hsg301ws.stl added. 2019.07.02 VC-Duct-Sprt01.stl, VC-Duct-Sprt02.stl added. 2019.08.20 Note C.5 added. Optional "Air-Intake-Case301ws" (with my special support) added.\r\nI hope you have success!!