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Forum Index : Windmills : Furling System

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drewgarth

Newbie

Joined: 30/07/2006
Location: Australia
Posts: 8
Posted: 12:57am 13 Aug 2006
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Hi Folks,
i might have missed it reading the wealth of great info on the site...But im interested in more details of the furling system of the Windmill Project.

For instance...Looking at the design, it looks like it will provide an "auto furling" operations similar to the Bergey, or chinese turbine products that are around.

Based on the geometry described, at what wind speed will the windmill furl? (roughly of course)

thanks in advance

Cheers
Andrew
 
Gizmo

Admin Group

Joined: 05/06/2004
Location: Australia
Posts: 5111
Posted: 01:51am 13 Aug 2006
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I have no idea. Its one of those thing I built to the old "That angle looks about right" theory, and it worked. I dont know wind speed, but it starts to furl at just over 200 watts, maybe a little early, so I need to add some wieght to the tail.

Have a look at this message thread, it has some calculations. http://www.thebackshed.com/windmill/forum1/forum_posts.asp?T ID=235&KW=windstuffnow
I need to document them and put the details on the web site.

Glenn
The best time to plant a tree was twenty years ago, the second best time is right now.
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makourain

Senior Member

Joined: 19/04/2006
Location:
Posts: 111
Posted: 10:48pm 13 Aug 2006
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i have looked and cant find the furling system you speak of
 
drewgarth

Newbie

Joined: 30/07/2006
Location: Australia
Posts: 8
Posted: 03:21am 14 Aug 2006
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Thanks Glenn,

I had been googling for ages and hadnt found anything..

I followed the link and also went to
http://www.windstuffnow.com/main/turbine_kit.htm (same author) and even managed to derive the equations which makes me happier that i now understand :-)

cheers
Andrew

 
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