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Forum Index : Windmills : Just an update to 4blade

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vawtman

Senior Member

Joined: 14/09/2006
Location: United States
Posts: 146

Posted: 10:34pm 11 Oct 2008

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The wheel and mags don't seem so massive now.I started pickin away at the concrete for the tower also.

Havin fun

Gizmo

Admin Group

Joined: 05/06/2004
Location: Australia
Posts: 5147

Posted: 01:19am 12 Oct 2008

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Wow vawtman, its starting to take shape.

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

oztules

Guru

Joined: 26/07/2007
Location: Australia
Posts: 1686

Posted: 04:18am 12 Oct 2008

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Holy cow Batman...... it lives...

Lookin good Mark..... stated me hankering for a Vawt for a minute..... but I shook it off...just

Keep it up and don't forget the camera....with the close up settings activated

........oztules

Village idiot...or... just another hack out of his depth

Ken.

Newbie

Joined: 05/10/2008
Location: Australia
Posts: 13

Posted: 04:40am 12 Oct 2008

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Wow very impressive

Is there a blog or something we can look at to follow the build more closely?

"Imagination is greater than knowledge" Albert Einstien

Dinges
Senior Member

Joined: 04/01/2008
Location: Albania
Posts: 510

Posted: 10:32am 12 Oct 2008

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Bl**dy hell, Mark... I blinked a few times when I saw the picture. It's *big*.

Next time you take a picture of it, have someone standing near the VAWT as reference for size; it's hard to see just how big it exactly is

.

Just a few remarks. I think I'd add some more support for the blades near the tips, either from tip-to-tip of the next blade, or to the shaft. And if the vertical shaft that connects the blade to the generator has to take the full sideways (lateral) force/thrust of the wind, then it looks too thin. But if you add your bearings on that shaft, one just below the horizontal cross of the blades, and another just above the generator, it's probably fine. So whether the shaft is strong and stiff enough depends a bit on exactly how you will build it.

Looking forward to updates of the project. And yes, now the rest of the windturbine is taking shape the magnet rotor doesn't seem so large anymore...

vawtman

Senior Member

Joined: 14/09/2006
Location: United States
Posts: 146

Posted: 12:09pm 12 Oct 2008

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Thanks Oz
One can carve vawt blades with a chainsaw also

Peter
It's 8ftx8ft.The support arms will be 1inx1/8th square stock attached in a crisscross pattern on top of the rotor and linking each blade on the bottom.Not done with that yet.
I'll go into more detail on the tower,shaft and bearings abit later.

Need my coffee to soak in

philb

Regular Member

Joined: 05/07/2008
Location: United States
Posts: 96

Posted: 04:33pm 12 Oct 2008

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Nice job Mark!
Looks like you are after usable power.
Have you finished your generator?

philb

vawtman

Senior Member

Joined: 14/09/2006
Location: United States
Posts: 146

Posted: 06:14pm 12 Oct 2008

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Hi Gizmo
"if it don't fit use a bigger hammer"That slogan fits in well with the project.I shattered the handle on my maul

and off to rent a bigger hammer

Thanks

vawtman

Senior Member

Joined: 14/09/2006
Location: United States
Posts: 146

Posted: 06:53pm 12 Oct 2008

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http://members.ebay.com/ws/eBayISAPI.dll?ViewUserPage&userid =bobhill5
I found this seller on ebay and seems like a great deal.The only problem is it's paypal only and the wife aka(fiancial advisor)aka(stolen identity guru) said no to signing up.Just gotta find buddies that have it

So not much new news on that front but will keep everyone posted when i get to the test coil stage.

Should be fun.

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