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#Post#: 5052--------------------------------------------------
Re: Sail Blade VAWT
By: sut Date: January 4, 2015, 9:41 am
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I think if you put a bail of straw on the spot it will defrost
it ,But I am not sure of that, I know it will keep it from
freezing . You probably could drive a rod into it and break up
the area where needed! just depends on how bad you want the new
spot ;D
#Post#: 5057--------------------------------------------------
Re: Sail Blade VAWT
By: sut Date: January 6, 2015, 7:51 am
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Is ripstop nylon that hard to sew ? I would think it would sew
just like fabric but since I have never tried to sew anything I
don't know
#Post#: 5061--------------------------------------------------
Re: Sail Blade VAWT
By: sut Date: January 6, 2015, 3:14 pm
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Looking better each day ! Have you taken it out side yet to see
how it spins in wind ( what little wind we have )
#Post#: 5068--------------------------------------------------
Re: Sail Blade VAWT
By: sut Date: January 7, 2015, 7:24 am
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I think that's a good Idea that way you can compare the sail
vawt to the diy 75 with the same alt
(TIP) When you do use the VBT press make sure that both tires
are off the ground the same height! other wise it will have more
sideways force when you let it down and the boards tent to slip
sideways more .
#Post#: 5071--------------------------------------------------
Re: Sail Blade VAWT
By: lynx wind Date: January 8, 2015, 10:49 am
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Don't the magnets cog like crazy on those steel bolts holding
the stator?
#Post#: 5072--------------------------------------------------
Re: Sail Blade VAWT
By: sut Date: January 8, 2015, 10:53 am
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Cool I can just see it on a pole now spinning away ;D
#Post#: 5073--------------------------------------------------
Re: Sail Blade VAWT
By: lynx wind Date: January 8, 2015, 11:36 am
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Guys, I am sorry I am not making better progress on my
prototype. I have way too many projects going and work totally
gets in the way.
For a DIY Seagull 75 replacement I want to do a DIY Seagull Sail
VAWT. This will have a new design alternator which is a bit
more complicated 3 phase radial design but will be better in
operation. The construction of the rotor and sails will be
super simple so I think the complication of a harder to make
alternator is on balance OK.
The alternator will still use six 1" x 2" x .25" NEOs but there
will be 18 virtual coils. The way the coils are wound is a
secret I have guarded for several years but it's time to make
some use of the design. The cool thing about a radial design is
the stator to magnet gap is much less crucial and you can get a
lot more HZ per rotation.
Realistically the design wont be out until end of February.
#Post#: 5075--------------------------------------------------
Re: Sail Blade VAWT
By: sut Date: January 8, 2015, 2:53 pm
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Can you blame him LOL
#Post#: 5077--------------------------------------------------
Re: Sail Blade VAWT
By: lynx wind Date: January 8, 2015, 7:02 pm
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Yeah, you're right! I like the TR better than you guys. But,
I do have time to think about the Sail VAWT. I am pretty
excited about it. Winter is a good time to do projects because
its too damn cold outside and I can't go to bed at 8pm all the
time.
I am attaching a very rough sketch of a 6 magnet 18 coil 3 phase
radial alt. It will be made similar to the Seagull alt with the
3/8" shaft, 1/4" pipe nipple/ball bearing and plywood structure
for the stator. The tricky part is the perfect steel circle to
house the magnets. Not sure if there is anything off the shelf.
It would need to be about 5"ID and be able to attach to the
rotor.
The neat thing about a radial alt is if the rotor is slightly
off a degree it wont strike the stator like in the axial types.
#Post#: 5083--------------------------------------------------
Re: Sail Blade VAWT
By: sut Date: January 9, 2015, 8:08 am
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If it was a bigger dia. you could use a brake drum off of a VW
The steel pipe idea will work but you would have to do some
welding then have it machined which any shop could do
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