User madmax126 presents a simple windmill that serves to pump water into a garden. It has about 4m wingspread, gearbox (differential) adapted from a Fiat 126p, a pole is a closed steel section 100/100.
Efficiency – about one bucket per 3 minutes while medium wind.
All the elements:
*two metal sheets to construct wings;
*rotor;
* Fiata 126p gearbox;
*pole and shaft pipe;
*chains;
*bearings;
*pump adapted from a hydraulic cylinder;
*check valves;
*paints, cement, etc.
Link to original thread -
Wiatrak do pompowania wody