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grapeng1
18:29:44 Wed
Aug 19 2009

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siphon hose question for G-1 highbanker

Hey Guys,
This is my first post on this forum, which I have been reading for the past year and enjoyed immensely.

Iíve been following the post on the G-1 highbanker and was trying to figure out a way to supply water to it without using a motorized pump because where I wish to run it, they donít allow motorized equipment. I was looking at the concept of a siphon hose hooked up to the G-1 with a 2Ē dia hose connected and place upstream some distance and have a bypass valve at the highbanker. Any thoughts would be appreciated.

  
AceHand
22:37:31 Wed
Aug 19 2009

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Re: siphon hose question for G-1 highbanker

Hi Grapeng1,
I have the same problem of no motorized equip. as you and have considered the same solution, but haven't tried it yet. I'm wondering what state or area you plan on working.
I've read discussion of gravity flow highbanking and dredging on here before. Rather than siphon, perhaps keep the hose in the creek until it is lower than the intake, to create a little pressure, and then come out. The pressure is proportional to the height of the column of water. These guys can tell you the height you will need for a 2" hose on a G-1, hopefully. The length of hose needed will depend on the creek gradient.
If the area is non-motorized, then highbanking is sure to be a no-no. Keeping the G-1 in the creek would be the same as sluicing, but perhaps not in the eyes of the authorities. Equipment that runs silently, no motor noise, would be a plus, anyway.
Lay flat hose would be preferrable for weight and packing space. I would start out with rigid hose, plastic pipe, or a combination of such until some head pressure is built up to inflate or expand the lay flat. You won't get full volume unless it's rounded. Some rigid hose at the bend up to the G-1 will ensure full volume and no kinks on the other end.
Good topic. I'm anxious to hear more comments.
Good Luck,
Tom

  
overtheedge
07:13:21 Thu
Aug 20 2009

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Re: siphon hose question for G-1 highbanker

Might I suggest using 4" minimum. You need volume. I've used 1Ĺ" and found it needs many feet of drop to get any volume to speak of. You can get 4" poop tube (corrugated poly) at any large hardware store for less than $1 or so a foot. It comes in 10' sections and 100' lengths.

Priming is a bit of a hassle, but just plug the bottom end and then fill till its full. Until it is filled and primed, it wants to float away.

  
LipCa
15:14:24 Thu
Aug 20 2009

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Re: siphon hose question for G-1 highbanker

Unless you have a waterfall, I'd forget about pressure.
You get 43 pounds of pressure for every 100 feet of elevation(minus friction loss).
You probably need volume, not pressure anyway, like overtheedge said.

  
overtheedge
04:07:08 Fri
Aug 21 2009

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Re: siphon hose question for G-1 highbanker

Forgot to mention that the smaller hose has lots of friction loss and this is what makes lotsa head a real requirement. You gotta have enough fall to overcome the friction loss and then what presure you need.. The loss is the same per 100' (standard measurement unit) no matter what the head is.

Another thing to consider is that collapsible hose needs a restrictor at the bottom end. Else it will just collapse. Remember that for the upper end, the water pressure (weight) is the same on the inside as the outside. On full hose with a restriction on the bottom end, the pressure at the upper end is the same inside and outside but the water is basically non-compressible. The restriction holds just enough back pressure so intake volume matches outflow.

Haven't tried yet, but you might do a web search. Key phrase "gravity sock". We had them in the system when I fought forest fires.

  

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