DIY Vertical Wind Turbine Blades

Written by tricia lobo
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DIY Vertical Wind Turbine Blades
Use a saw to quarter and shape your PVC piping into blades. (wood saw image by Horticulture from Fotolia.com)

Vertical axis turbines, with the main rotor shaft positioned vertically, offer key benefits as a means of harnessing wind power. They can easily adapt to changes in wind direction, they are more quiet than horizontal-axis turbines, they rotate at lower speeds, and they can be installed on the ground for easier access. With their lower rotational speeds, however, vertical axis turbines have a higher torque, and consequently a higher drive train, and they are more expensive to build.

Reduce turbine construction costs by building your own blades. PVC is light and cheap, and constructing blades out of PVC is easy.

Skill level:
Easy

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Things you need

  • PVC piping
  • Saw
  • Tape measure

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Instructions

  1. 1

    Determine the desired size of your blades. Based on that, select a pipe. The diameter of your piping should be about one-fifth the length of your tubing. For instance, if you are building 100-centimeter blades, get piping that is 20 centimetres in diameter.

  2. 2

    Cut your PVC pipe into quarters, first down the centre, then lengthwise. To do this, draw a line around the centre of the pipe and cut it in half to obtain two shorter pipes. Then use your saw to half the shorter pipes lengthwise so you'll have four half-pipes.

  3. 3

    Shape each half-pipe. Cut a notch out of the base in the shape of a rectangle about five centimetres up. This will enable you to attach the base wherever you need to. From the top corner of the notch, cut upwards, diagonally, to form a point at the tip of the blade. Repeat until you have made four blades.

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