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How to build a Wind Generator Blade?

Updated on July 13, 2010

Wind generator blades are the essential part behind the working mechanism of the wind generator.  These blades are curved and large, and they are quite similar to the prop blades of the airplane, and these blades are the source for generating power.  Creating the own wind generator blade is the excellent method to bring down the cost of making the wind generator and it also gives some self gratification.  This article gives a good explanation on how to make the homemade wind generator blades to save that excess money.

 It is highly necessary to choose the correct item to make the blades as it has directly proportional to the efficiency and skill of the wind generator.  Some of the items that are utilized to make wind blades are wood, metal, and plastic.  Woods are believed to be the good choice for the yesteryear traditional wind generators, metal are the easiest item to work with, and plastics are the ideal item to make the blades.  It is highly recommended to build the blades with PVC pipes because of so many reasons such as the wood can crack, wood absorbs water, and the crack makes wood to absorb water.  Also, wooden blades are very difficult to make and very time consuming.

 For making three wind generator blades, a person require 4” or 6” PVC pipe, which is less than 4’ in length and for blades that is less than 30’’ in length, a person can make use of 4” diameter PVC.  To make wind blades between 30” and 48”, a person may need a PVC pipe of diameter of 6” PVC plastic pipe.  First, middle line should be drawn down the pipe, as the blades branch from the centerline and thus makes more power.  The blade should be made pointed for about 5” at the base and 2 ¾” at the peak, and then curve the blades at the labeled line.

 Smooth the cut edges around the cut area to get the neat finish and before poising the blades, paint the blades with the UV covering paint.  UV protective paint shields the PVC pipes from getting brittle due to the sunlight exposure.  For balancing the blades, mount them on the hub and put the hub on the piece of steel rod with some pillow block bearings.  Rotate the blades to find out the bottom blade and cut down the bottom blade little more than the other blades, as balanced blades are good than the unbalanced one.


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