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Windmill 1

Five year windmill

(Click to enlarge photo)

This is a fairly standard type of wind machine and is drawn into the wind by a tail fin. The propeller is of quite a solid, welded construction, and it has a twist in each blade although it is not an aerofoil. The main reason for building this particular model was to find out if a small wind machine (1.2m span) could survive all the storms and gales without any active mechanism to spill-off the wind when things got bad. (The wind machine was allowed to free-wheel without a generator.) The propeller shaft bearings were standard motor industry wheel bearings for a Mini. I am happy to say the wind machine survived 5 years without any maintenance and was in excellent condition when I dismantled it to use the parts for something else.


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