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Start of the
windturbine project. I cut two lengths of 4" plastic
drain pipe in to 24" long pieces, this pipe will make
the turbine blades.
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Next the pipe
has to be quartered, to do this I found a 2" piece of
square box and marked the pipe every 90 degrees. Then
using a metal scribe I etched a mark along the edge,
this gave me a neat cutting line.
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Shown is the
4 quarters that made up the drain pipe.
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Then I drilled
a 35mm hole to give the base of the blade a curved, stress
eliminating fixture. |
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The leading edge of the blade was
then cut away to produce an aero dynamic profiled blade
and then sanded with a belt
sander. I repeated this procedure to give me 6 blades.
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Rather than a typical 3 blade turbine,
I decided to have a go at making a 6 blade, of course this
naturally left me with a couple of extra blades which
I will use as spares. |
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For the generating hub, I found
a wheel of a kids electric scooter, it cost around £6.00
and I feel will make a great
mounting for the turbine blade assembly.
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I then welded the spindle that came
with the wheel to what will become the main stay of the windturbine. |
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Hub mounted on to the spindle.
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Now the tricky part, there
is great debate over the best type of generator, but without
going in to it I have chosen a 24volt permanent magnet
motor also from a kids scooter, this will act as the generator.
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Motor fixed on to the variable tension
support bracket, I just have to weld it on to the stay. |
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Motor and hub assembled and connected
using a toothed pulley belt. |
