Backyard Aquaponics
A place to discuss aquaponics

19m is a bit of a bugger. If there's no way of getting a shaft down to ground level you will have great difficulty lifting that high with any positive displacement pump (end up trying to pump a vacuum). Looks like it will have to be a wind electrical generator. Try this one, cross between a darius and a savonius and again easy to construct with scaleable plans he even has on his site how to make the generator.
http://www.windstuffnow.com/main/vawt.htm

It's blowing 30km/hour today, *sigh*

Jaymie, really?) That could be on the coast - we build inland a bit.
Sleepe -- the picture in the bottom doesn't look half bad. We might just build something like that...Thanks.

Am leaning now toward the electrical generator version.

And here a silent, but somewhat pricey one...If only we had that much in the kitty, but this is NOT Au -- still it looks sooo good. Oh well. L

http://www.youtube.com/watch?v=iPuWSBYMWqg
The title says is a cross between savonius and darreus VAWT.
L.

J, why dont you make an S rotor genny?

just go find a spare blue barrel

AP's gotta be getting boring for you at this point.

I wouldn`t judge the design by my feeble 7ft dia effort..5ft off the ground
12mm fibreglass tube, some nylon cord and 80mu clear poly isn`t very robust. Steel tube, steel cable and ripstop nylon would be pretty indestructable.
The sails are supposed to flap hehe opposite pairs work in a push/pull arrangement. Sails staying full would rob a lot of energy compared to the 12mm thick leading edge cutting through the wind.
My featherweight sails were a tad unruly with the gusty turbulant wind but I`m sure better sail materials and laminar winds would give a smooth transition of opening and closing sails.
I don`t think it would work with more sails ( 6-8 ) i did look into it vertical stacking would be quite easy to do though.

He was using dacron sails and fishing line for the controls (ie the bit that does the folding). It was designed for portability and low tech, and stuff all cost if you have to replace anything.
Dave D if it destructs in the first storm (which I doubt) you'r probably up for a few metres of fishing line or rivets and patch.
Perfect is costly, do-able is nice.

Certainly cheap and cheerful..this one cost about £7 ($14)
I think it might survive better than some other designs.
The rotor isn`t rigid, so it can flex and should take a lot of abuse without breaking. The other plus is that the rotor is "suspended" by 12 flexible cables so its held by cable tension instead of needing a heavyweight frame.

I found strimmer (weedwacker) line good for the sail control cables, i tried fishing line too but it stretched too much.

I said:



leddie said:


I say that that's all very well but I reckon that a gold wind mill is a bit over the top.

Stuart said:

Agreed Stuart, no contesting there.
How about silver then...

i prefer platinum myself............

Especially at $2000 oz......

wow, that much?

shite, i could take off a large part of my mortgage with what i have, just gotta find it, last time i saw it it was in a ziplock bag mixed in with nuts and bolts in a box....................

Actually $2,421 oz.....

Good luck with that steve.... I wouldn't tell the missus untill you find it if I were you.

I would use carbon nanotubes

thats more than doubled in the last 8 years i think!

i worked it out to be around 23.5 carat

5 years of occasional making type R and S thermocouples