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#Post#: 2350--------------------------------------------------
Re: 175 Watt Seagull DIY Kit
By: nessprojects Date: April 18, 2014, 5:56 pm
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By spars do you mean the stainless brace strips or do you mean
the fibreglass rods used to attach blade to rotor ?.
If you mean the rods then my question is how will you fit a 4ft
length rod in a 2ft box, assuming you are following the basic 75
plans. (maybe this bit has changed but I did not notice).
#Post#: 2351--------------------------------------------------
Re: 175 Watt Seagull DIY Kit
By: lynx wind Date: April 18, 2014, 6:23 pm
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The spars are 1/2" OD fiberglass rods. They are quite stiff.
They have a 1/4"ID. They will be cut to 24.375" and will join
in the middle with a 1/4" OD spar and epoxy. Shipping 40" long
rods caused shipping rates to be high. The spars will fit
diagonally in the box.
The bracing will be stainless steel and I don't have the
measurement yet.
#Post#: 2352--------------------------------------------------
Re: 175 Watt Seagull DIY Kit
By: nessprojects Date: April 18, 2014, 6:37 pm
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Many thanks, confusion cleared now.
The extra 1/4" od inside where the rotor attaches is a good
thing because my diy 75 failed at that point sheering 2 3/8"
wooden dowels and carried on spinning with the strap only.
(Rather a scary moment to say the least).
#Post#: 2372--------------------------------------------------
Re: 175 Watt Seagull DIY Kit
By: lynx wind Date: April 22, 2014, 9:36 am
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Welcome. One of our members developed this wind turbine blade
and I will let him tell about the SUT Blades. I can tell you
that it takes about 2 minutes to make the blade and it is super
solid and pre-finished.
#Post#: 2373--------------------------------------------------
Re: 175 Watt Seagull DIY Kit
By: sut Date: April 22, 2014, 3:16 pm
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@Jerrym The blade is made out of trim stock, its 19
thousands thick and can be bought through any supplier that
sells aluminum trim stock like a (siding place) . If you go into
the heading of (aluminum wings for a diy 75) you can see me
bend my first wing that I made a video of, that tells the whole
story
PS welcome to the forum
#Post#: 2395--------------------------------------------------
Re: 175 Watt Seagull DIY Kit
By: lynx wind Date: April 23, 2014, 8:33 pm
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Received the magnets and magnet wire today. I am close to
having the drawings for the rotor, formers and blade tips done.
No ETA yet on the hubs and magnet plates.
The formers will be made from 3/4" plywood for the time being.
These will be glued and screwed to the rotors and blade tips.
#Post#: 2396--------------------------------------------------
Re: 175 Watt Seagull DIY Kit
By: nessprojects Date: April 23, 2014, 8:58 pm
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Fantastic news.....Seems like it is all coming together. :)
#Post#: 2405--------------------------------------------------
Re: 175 Watt Seagull DIY Kit
By: sut Date: April 24, 2014, 7:39 am
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You can't predict what a independent machine shop will charge to
make it, or if they have the time its a check and see
#Post#: 2406--------------------------------------------------
Re: 175 Watt Seagull DIY Kit
By: lynx wind Date: April 24, 2014, 8:20 am
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The 1/4" thick 9" D plates drilled, tapped and powder coated
cost about $24 each. It also depends on how many are made. I
am working on it. The shoulder bolts for the shaft cost about
$22 each. The hubs with bearings and adjuster cost about $44
each.
12 magnets cost about $84
Six 18 awg coils cost about $54 each set
Spars are $24
Coupler about $4
Bracing about $18 set
Hardware - $10
#Post#: 2453--------------------------------------------------
Re: 175 Watt Seagull DIY Kit
By: nessprojects Date: April 27, 2014, 6:17 pm
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Copied this bit from the diy75 section to this section "the 12
magnet rotor lends itself to working as a single phase or a 3
phase design with a small change. That may be a fun option."
Giving that a bit of thought and could work out to a advantage
:-
1....You would only need 9 coils.
2....the wire thickness would be halved.
3....Bringing out the starts and ends of each phase would enable
the user to connect in 'star' for 24v or 'Delta' for 12v.
There are probably more but a disadvantage is the spikey voltage
which does have its uses on the single phase.
Any thoughts ?....
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