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Victor
Junior Member
United Kingdom
357 Posts |
 Posted - 20/04/2008 : 20:21:09
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Pivots seem to be one of the most difficult things for people to make for their wind turbine if they dont have welding equipment etc..
Let`s all get together and list some basic ideas of how to get a hold of off the shelf pivots for new members.
1 - use a wheel from a shopping trolley and cut of the wheel and keep the moving bit.
2 - put a bigger tube over another tube and close the end so that it swivels around.
3 - use a bit off a lighting stand thats used as a t bar...
Thats my ideas I wonder if anyone else can add to the list to get our small micro turbines moving into the wind direction..
it`1s over to you guys now.
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super windy
Junior Member
195 Posts |
Posted - 20/04/2008 : 21:41:33
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Hi victorand all little gotwinds, lets not forget the office chair pivot, I have already made 2 turbines with them, I have already got the one for my next project,the future energy alternator, I think they are ideal they have decent bearings on them, the base is 48mm around, so all you need is a scaffolding joining clamp, and way you go, and they are so easy to remove from the chair, just whack the wheels off them with a hammer, then 4 bolts and the rest of the seat and backrest commes out.
cheerio
super windy |
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MattM
New Member
USA
84 Posts |
Posted - 20/04/2008 : 21:54:00
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Put a pipe over a tube. Pipe is measured by the inner diameter. Tubes are measured by their external measurement.
Go Huskers! |
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Capt Slog
Starting Member
United Kingdom
29 Posts |
Posted - 21/04/2008 : 11:10:31
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I used a heavy duty door hinge for my gennys furling. It's easily built in and seems to be quite durable.
http://www.otherpower.com/images/scimages/7027/tailhinge
going from left to right in that photo.....
1.the piece of angled aluminium with a hole in it is where it bolts to the back of the turbine, and the angle is adjustable.
2. Hinge.
3. piece of aluminium plate to which is fastened..
4. 22mm tube clamps which hold
5. the tail boom which is a £2 mop handle (plastic coated steel tube).
For the Yaw pivot I put some standard(ish) bearings directly into the end of the scaffolding tube that makes up my 'tower'. The bar that runs in those bearings is clamped to the back of the turbine. Not a weld anywhere.  |
Edited by - Capt Slog on 21/04/2008 11:11:19 |
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BushWhacker
Junior Member
Canada
255 Posts |
Posted - 21/04/2008 : 15:12:00
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Very clever furling device Capt Slog! Do you think there would be any advantage to putting an adjustable, spring loaded, self closing door hinge into your furling design?
The hinge I speak of...
http://www.buildersmerchantsjournal.net/products/product.asp?id=5
My thoughts are you could adjust for wind speed before furling without changing the angle of the hinge (faster & easier). I have no idea how spring loaded hinges would stand up to the elements. I do know they are meant to close a metal clad, foam core door.
Just a thought,
BW
Everything should be made as simple as possible, but not one bit simpler. - Albert Einstein |
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Capt Slog
Starting Member
United Kingdom
29 Posts |
Posted - 21/04/2008 : 15:53:57
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Hmmmm, possibly. I can't tell from the picture which way it works (how it mounts to the door). It made my head spin trying to get the one I've got the right way around, it looks like it should be simple I know, but getting there was strangely difficult! I suppose you could find a way to mount it whether the pic shows fully open or fully closed.
I can see that it would be more adjustable, but I'd hate for the furling to have to fight against any sort of damping to furl, or for that matter, to unfurl and come back into operation.
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gholt
Starting Member
USA
47 Posts |
Posted - 21/04/2008 : 16:29:25
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I believe it was Del who demonstrated the use of a flange bearing for his mast mount. I thought it was very nice, although I've wondered about shielding it from the elements - any thoughts Del ?
fuzzy picture from ebay ... search for flange bearing.
G.
edited to add: I think the pipe over tube idea is about as basic as it gets. Toss in a chunk of HDPE (high density polyethylene) as a bearing surface and some bacon fat ... pretty slick (don't get too serious about the bacon BW)
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Edited by - gholt on 21/04/2008 16:36:54 |
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Topic |
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Making pivots
