S-shaped Savonius ball beared

thingiverse

<img src="https://www.researchgate.net/publication/295084185/figure/fig1/AS:1086742853615644@1636111095544/The-supposed-streamline-of-the-Fish-ridged-rotor.jpg?format=1500w"> The special feature is that the blades are aerodynamically s-shaped, similar to the Ugrinsky turbine. This is the so-called "three-blade fish-ridge turbine". It is also being studied as a water turbine. You can find more details at https://www.researchgate.net/figure/The-supposed-streamline-of-the-Fish-ridged-rotor_fig1_295084185 https://vawt.ro/2016/02/28/fish-ridged-savonius/ https://youtu.be/gqllBK2su34 <iframe width="640" height="360" src="https://www.youtube.com/embed/gqllBK2su34" title="Three bladed Savonius fish-ridge turbine" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen></iframe> In order to be able to exchange all parts at any time, I designed everything to be screwable. For the axle I took 8 mm round aluminium material and cut a thread M8 on one end. My print settings bearing: extrusion width 0.5 mm, layer height 0.25, perimeters 3, infill 40%, 3 bottom/top layers plate bracket: extrusion width 0.5 mm, layer height 0.25, perimeters 4, infill 30%, 4 bottom/top layers bottom and top plate: extrusion width 0.5 mm, layer height 0.25, perimeters 2, infill 30%, 4 bottom/top layers blade: extrusion width 0.53 mm, layer height 0.25, perimeters 1, infill 0%, no bottom/top layers threaded bushes M3: extrusion width 0.4 mm, layer height 0.2, perimeters 1, infill 0%, 2 bottom/top layers spacer: extrusion width 0.5 mm, layer height 0.25, perimeters 1, infill 0%, 2 bottom/top layers