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#Post#: 638--------------------------------------------------
Re: Alunimum wings for diy 75
By: sut Date: October 25, 2013, 4:59 pm
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Its Beer time for me !!!!!!! Wow that 4hrs goes by slow!!!!
wouldn't ya know it we are suppose to get 40 mph winds tomorrow
!!!! and me with out a finished windmill, But close Hope my
hawt will survive it
@CG great idea on wood Wish I would of thought of that before I
got mine all made and cut.
#Post#: 675--------------------------------------------------
Re: Alunimum wings for diy 75
By: Otis Date: October 29, 2013, 7:52 am
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Nice video sut. Aluminum wings look great.i want to see it
goin... Im excitied for you. Take your time..and finish right
now! ;)
Jk
#Post#: 798--------------------------------------------------
Re: Alunimum wings for diy 75
By: sut Date: November 10, 2013, 6:25 pm
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Hi all
My windmill finally got a new home ( well at least the pole is
there ) So may be I can get it to spin and test out the aluminum
wings! to see how they will hold up in wind tests (not my leaf
blower). I would have put it on the pole today but it was pretty
windy and I figured better be safe than sorry. I am tempted to
let it run unloaded just to see if it can take a harsh
punishment at least while I am there . well I
will keep you posted but probably that darn 7 day curse will go
into effect all over again
#Post#: 799--------------------------------------------------
Re: Alunimum wings for diy 75
By: lynx wind Date: November 10, 2013, 7:18 pm
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Please, please don't run this turbine unloaded. You will be
very unhappy with the results. I have seen three VAWTs run
unloaded and each ended up badly. One fiberglass one just blew
apart throwing itself all over (not mine). I have never had a
failure with the GULL design when loaded.
#Post#: 850--------------------------------------------------
Re: Alunimum wings for diy 75
By: sut Date: November 18, 2013, 9:42 am
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Well after last night I think the wings will stand up to almost
any wind ! This morning I went and inspected them and no signs
of damage! (Phew) I didn't hear any sounds of them flexing at
all last night! and the wings are made with out any center rib
for support . This is a pict I took of it spinning last night
[URL=
HTML http://smg.photobucket.com/user/sujsti/media/Image0085_zps2f6f4954.jpg.html][IMG]http://img.photobucket.com/albums/v74/sujsti/Image0085_zps2f6f4954.jpg[/img][/URL]
#Post#: 1050--------------------------------------------------
Re: Alunimum wings for diy 75
By: sut Date: December 14, 2013, 12:11 pm
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Humm ! well I didn't think about ice build up on blades, but I
could always hook up battery to stator and melt it off . I could
always send wife outside with hair blower and melt it off (need
to send her out and remove snow from rotor now)
#Post#: 1051--------------------------------------------------
Re: Alunimum wings for diy 75
By: lynx wind Date: December 14, 2013, 12:17 pm
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I have run these VAWT year round. The ice wont usually buildup
if they are running. If ice does build up it wont spin and will
not run until it melts off. I wouldn't worry about this.
#Post#: 1054--------------------------------------------------
Re: Alunimum wings for diy 75
By: lynx wind Date: December 14, 2013, 5:04 pm
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Wont spin if it has ice on one or more blades. It'll just sit
there. I have run these in snow and sleet. You will only see
buildup when the wind stops or slows way down, then you have to
wait for a thaw or go out and clean it off.
#Post#: 1137--------------------------------------------------
Re: Alunimum wings for diy 75
By: mad murdock Date: December 23, 2013, 2:05 am
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The aluminum idea looks real good. I am an aircraft mech for my
day job, 25+yrs. if you were worried at all about strength, use
aircraft alclad aluminum sheet of desired thickness spec'ed to
2024T3. It is not terribly expensive and is relatively easy to
work (depending on thickness). Hand forming is fairly easy up to
25 thou thickness. Anything thicker and a brake of some sort or
a form is needed. I would simply add 3/32" rivets at the
TEnspaced say 2" apart at assembly with a good adhesive. As far
as any icing concerns, if rime icing were to occur on the blade
leading edges, it will build up uniformly. Problems with
aircraft occur when ice begins to shed, it rarely does it
evenly, causing vibrations. Those vibrations help it to shed
faster. I don't see it being a valid concern for a VAWT.
#Post#: 1427--------------------------------------------------
Re: Alunimum wings for diy 75
By: sut Date: February 4, 2014, 9:03 am
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I just went outside and made a new wing out of left over trim
stock and made it with a folded TE its 18" x 4.5' now I did this
in about 3 minutes so easy !. I had forgot I had a simple
folding tool That I use for bending sheet metal For HVAC work.
Now this wing is not the proper size but just wanted to see if I
could bend TE easy and I did, all I need now is to make wing
formers and try it with proper size sheet of aluminum then glue
it together. Here are some pictures of wing
[URL=
HTML http://smg.photobucket.com/user/sujsti/media/Hawaii/wing/Image0133_zps2a690d69.jpg.html][IMG]http://img.photobucket.com/albums/v74/sujsti/Hawaii/wing/Image0133_zps2a690d69.jpg[/img][/URL]
[URL=
HTML http://smg.photobucket.com/user/sujsti/media/Hawaii/wing/Image0132_zpsb347ca92.jpg.html][IMG]http://img.photobucket.com/albums/v74/sujsti/Hawaii/wing/Image0132_zpsb347ca92.jpg[/img][/URL]
[URL=
HTML http://smg.photobucket.com/user/sujsti/media/Hawaii/wing/Image0131_zps262f475e.jpg.html][IMG]http://img.photobucket.com/albums/v74/sujsti/Hawaii/wing/Image0131_zps262f475e.jpg[/img][/URL]
@CG how strong is that GG sticking to the aluminum?
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