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Forum Index : Windmills : Starting on the stator

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vawtman

Senior Member

Joined: 14/09/2006
Location: United States
Posts: 146
Posted: 03:54pm 07 Feb 2009
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After a couple months of pacing around the rotor and snowblowing everyday we finally got a break in the weather.
Here's the recipe i cooked up so far

2 layers of sheet metal over mags(gap)
1 layer of waxpaper(stolen from wife
2 layers of fiberglass screen
108~pieces of pvc tubing
1 carton of kevlar reinforced Power Poxy nice stuff ant the same has used for the mags.

Here's some pics of my progress so far.







Havin fun
 
oztules

Guru

Joined: 26/07/2007
Location: Australia
Posts: 1686
Posted: 07:16pm 07 Feb 2009
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No doubt about it Vawtman... to say that is an ambitious project is an understatement.

I very much hope that the wheel is truly round, as the airgap is going to be unforgivingly skimpy. Hopefully the missus's wax paper allows the stator to release from the metal ring easily (it should... good idea)..... which just leaves you to release the metal band from 50 odd grabby magnets..... you have all the fun

Exactly what part do the plastic conduits play?... or put another way, where exactly does the wire go..inside the tubes (threaded through the hole?)...

Damn interesting stuff you got there Mark.


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

Senior Member

Joined: 14/09/2006
Location: United States
Posts: 146
Posted: 08:25pm 07 Feb 2009
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Hi Oz
I spun it up pretty fast early on and it should be real close for the rpms called upon.The thought is i could glue a piece of emery cloth to a few the mags to plow the way if needed.
The conduits are just that slots for the winding.A 2ph overlap and the nice thing is i can work on the outer perimeter.When everything is stabilized, a bit fragile at this point.I'll used my grout grinder to open up thin slots and then reseal them when the winding is sealed.
Can you believe it took almost a pound of poxy to adhere the 108 slots.No mention of labor the fun part
Thanks to the waxpaper it will lift of easily but needs more surgery yet.It was fun attaching the steel it just rolled right on.No support needed

 
vawtman

Senior Member

Joined: 14/09/2006
Location: United States
Posts: 146
Posted: 10:00pm 08 Feb 2009
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I'm gonna use this has a diary of my stator if thats o.k.All 108 slots are installed and i can spin the stator on the waxpaper.Good Thing
Had a thought today of using the same banding i used for the inner gap on the outside for the poxy filler.Sometimes easy solutions take time.It's amazing how strong the pull is outthere.
The outer section is now wrapped with screen and waxpaper and working on the single band around the perimeter that will act has a magnetic form

I'm always open to other thoughts

Thanks for your time

v.....
 
vawtman

Senior Member

Joined: 14/09/2006
Location: United States
Posts: 146
Posted: 07:20pm 14 Feb 2009
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Well today i finished the outer layer and after it cures the required 24hrs i'm gonna lift the stator assembly off the rotor to seal the base for the final pour for the gaps between slots and also add anchors for the supports.It seems like the skeleton will be pretty strong has is.

This will be the first test to see if the thin gap is enough.Hope so and havin fun.

Good or bad will post updates and pics.
 
oztules

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Joined: 26/07/2007
Location: Australia
Posts: 1686
Posted: 08:54pm 14 Feb 2009
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Vawtman,
Don't forget to have a camera handy for the big lift-off

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

Senior Member

Joined: 14/09/2006
Location: United States
Posts: 146
Posted: 07:57pm 15 Feb 2009
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Well she popped right off and when the sheet metal was removed she spun freely all the way around so the wheel is true.



I think maybe i might open the gap up to a popcicle stick by cutting the epoxy band before the final pour though.

P.s how do you like my new floor i put in.
 
Jarbar
Senior Member

Joined: 03/02/2008
Location: Australia
Posts: 225
Posted: 08:38pm 15 Feb 2009
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Now thats pretty inspiring,well done.

Anthony
"Creativity is detirmined by the way you hold your tounge".My Father
"Your generation will have to correct the problems made by mine".My Grandfather.
 
oztules

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Joined: 26/07/2007
Location: Australia
Posts: 1686
Posted: 09:07pm 15 Feb 2009
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Now that is truly cool, and the tiling is good as well.

You have my complete sympathy with the wind. I am currently doing a 90 coil rewind. It has 360 pieces of transformer paper that had to be cut out, 90 coils to wind in 15 coil/half phase strings.... so 15 trapezoidal formers had to be built.... and the list goes on. 108 of anything is a lot of time....


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

Senior Member

Joined: 14/09/2006
Location: United States
Posts: 146
Posted: 09:45pm 15 Feb 2009
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Thanks Jar and Oz and good luck with your projects.

Also the keywords "HAVE FUN"
 
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