Twin Inline Cylinder Air Engine with rotating valve
thingiverse
This is a small 2 Cylinder inline engine which is meant to be driven by air. As ball bearings, you need ones with the following dimensions: 6,3/13,5/5 mm(id/od/w). For a complete engine, you need to print: 1x Kurbenwellengeh.stl 1x Zylinderblock.stl 2x Kolben.stl 5x Kugellager_Wellenadapter.stl 4x Kurbelwelle_Kurbelscheibe.stl 2x Pleuel.stl 1x Spur Gear (30 teeth).stl 1x Spur Gear (30 teeth)_bearing.stl 1x Spur Gear (60 teeth).stl 1x Ventilwelle_Lagerhalter.stl 1x Zylinderkopf.stl 1x Ventilwelle.stl 1x Verteiler.stl You also need: 6x 30mm xM3 screws 10x 23mm xM3 screws 4x 10mm xM3 screws 5x bearings (6,3/13,5/5 mm(id/od/w) 4x 4x20 mm steel rod 2x 4x15 mm steel rod 1x 4x19 mm steel rod 1x 4x16 mm steel rod 1x 4x17 mm steel rod some superglue some sandpaper (you can also use some rubber sheet as gaskets) video of it running: https://www.youtube.com/watch?v=1vtM2eUzn3w
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