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Build-it-yourself wind generators - Mic
Non-marine or build-it-yourself wind generators:
http://www.geocities.com/bill_dietri...tion.html#Wind http://www.dragonflypower.com/DragonBlerb.htm http://www.otherpower.com/ http://www.lookout2000.com/windpower/ "From Brian Engelke on SailNet liveaboard-list: our DIY wind generator: Just to show you all how easy this was: generator pics Images of this build at http://community.webshots.com/album/96862239oyxJMN Body of generator - scrap acrylic plastic = vane blade 1 1/2" pvc and cap = vane blade arm 4" PVC and cap = motor body and end scrap metal box fan hub = blade hub 1/4" x 3" x 24" wood = blade scrap 2" whisker pole stock = mounting pole scrap bimini 7/8" aluminum stock = mounting pole struts scrap 30 VDC permanent magnet tape drive motor = generator motor scrap industrial strength caster = pole/body swivel The scrap motor came from www.siliconsalvage.com for $20. These motors are great and charge at very low RPM. The rest of the parts I either had or bought on sale and it totaled $95. I studied blade design on the web and carved and sanded those from scratch. For this motor, the sweep area of the blades showed that the blades needed to be 24" long and tapered so the balance point if holding one on your finger should be 25%-33% from the mounting end to the outside tip. This keeps the centrifugal force working for you as opposed to slowing the blades down. I also used a postage meter at work to sand them until they were within .05 ounce of each other so at higher RPM they don't create vibration and tear the whole unit apart! I am no genius, so anyone can do this! The hardest part was definitely trying to get the mounting pole level straight up and down on a rocking boat!!!" |
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