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Mar 8, 2021 at 8:18 comment added GuitarExtended Do you have any idea of hard it is to rotate the later type of pump ? I found one but the manufacturer says the drill needs to be at least 600 W. I plan on making a pretty tiny vertical wind turbine, with blades around 50 cm in length only.
Mar 7, 2021 at 20:16 history answered niels nielsen CC BY-SA 4.0