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The junk you pick up!. A Hitachi welding robot. Have recently discovered the AC servo motors make excelent alternators!


A larger servo motor rated at 1100 watts. A quick test showed 30 plus volts and over 20 amps at 400 rpm.

Servo's are good if you can get them, but they are expensive and sell well on e-bay, so I would suggest selling them and using the funds to build a better wind turbine.
New home, new windmill.

Click on the picture to see a full size image


I built this 24v pressure water pump as a standby for the 240v pump. The motor is from Oatley electronics and the pump was found on ebay.


Another design, looking good. You can see the balance plates here.


Another shot of the windmill in a furled condition. The tail tilts back and up. Shot from under windmill. There's a article about furling here.


The F&P windmill with a set of plastic blades from EcoInn in NZ. These blades need strong winds to work well. Poor performers in normal winds.


Windmill using a scoota 24v 300 watt motor. Didn't work well. See here.


Testing one of the robots servo motors in the lathe

 


You got to love living in the country.


Home made wind speed meter. Used a bicycle computer and this contraption made with ping pong balls.


This kookaburra is a local resident. After I took the photo he jumped on one of the blades and started the windmill. Maybe this is a new decogging method.


PVC blades, easy to make and work well for small diameter propellers.


This is a servo motor on a small windmill. The motor was rated at 130 watts. Pumps about 3 amps into a 12 volt battery



This one is built from common sized bits of steel, no laser cut parts ( except for the propeller hub ). Details are here.


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