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How many paddles on a wheel ? | 12 comments (12 topical, editorial)

Re: How many paddles on a wheel ? (3.00 / 0) (#11)
by befnme on Wed Mar 19th, 2008 at 08:08:34 PM MST
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Back to square 1. Today I ripped out the tin "v" dam I had. It was leaking everywhere. I replaced it with a single 4'x8' sheet of 14 guage sheet steel. I had the fab co. cut a 15" diamater hole only 2" from the top. I jut happen to have a halved peice of 15" pvc water main. I drove some "t" fencing posts into the creek bottom to help hold the water pressure back. I put the steel on the pressure side of the posts and drove it into the bottom. That gave me about 1.3' of head. The water on the down side started lowering, and by raising the mounts for my wheel, it never even touched the water below. Thats good news because the pipe I used fit perfectly in the hole in the steel and now I am dumping all of that pressure directly on the 5 oclock paddle. With no water resistance to deal with it spins very well. However I can only get 2+ volts so I am adding more paddles. Now my pipe is dumping a stream 6" wide and at about 6-7 gallons per minute. It dosen't seem like much but I have a bypass in place so that I don'thold too much water back and dry up the stream down the land. I will post pics soon. Thanks for all the help guys.

Re: How many paddles on a wheel ? (3.00 / 0) (#12)
by Flux on Thu Mar 20th, 2008 at 12:53:57 PM MST
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You say you have 1.3ft head and a flow of 7gpm

That gives you potentially 1.75W at 100% efficiency.

Unless you can get a monstrous flow at that sort of head you are not going to get far.

I originally thought you had paddles round one bike wheel, if you can get something 20 ft wide that holds together you might be able to do something.

Flux

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How many paddles on a wheel ? | 12 comments (12 topical, 0 editorial)

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