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Windmill 6

Vertical paddle windmill

(Click to enlarge photo)

This machine is really a wind version of a water wheel. The wheel itself had four 'paddles' and was about 6 inches in diameter. It was quite long though, about six feet, and was supported by a bearing at the top and a car alternator at the bottom. The machine is shielded on the left to allow the wind to pass without slowing the paddle coming towards the wind, with an angled guide feeding the wind to the paddle travelling in the same direction as the wind. It was another in a long line of experiments to try and achieve a high shaft speed without using a gearbox or pulleys etc. It worked well in high wind but produced nothing if the wind was less than 20mph. Very noisy and not practical at this size, although I do understand that scaled-up versions that are enclosed in a housing are very effective. My objective was to find a design of machine that was cheap and could produce at least a charging current for batteries at low wind speed, and significant power during storms.


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