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Old 08-04-14, 05:49 PM   #1
NeilTheCop
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Default No load turbine speed

I can't find a definitive answer on the internet so I hope the forum can help.
What would be the approximate shaft RPM of a 2 meter horizontal 3 blade mill in an 8MPH wind with no load, just free rotation?

An odd question, but I am putting an idea together to see if it is viable

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Old 08-04-14, 09:13 PM   #2
stevehull
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Could be as high as several hundred rpm - depending on bearing friction.

Steve
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Old 08-05-14, 08:11 AM   #3
Ryland
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Blade design and pitch is going to dictate the free spinning speed to a point.
It also depends on what style of over-speed protection it has.
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Old 08-20-14, 05:27 PM   #4
NeilTheCop
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I can bore you with my plan, which may help answer the question. I could do with some input before I expend too much energy or worse, money

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