Posted 18 December 2011 - 02:44 PM
Posted 18 December 2011 - 04:03 PM
I'll leave the details for what you need to the smarter guys here.
Posted 19 December 2011 - 07:40 AM
Highbanker. If not you have something wrong.
Do not overload it and make sure you have the angle set right
and screen down your material to 1/2 " and you should run fine.
Put screen wire around the pump suction to keep trash out.
Posted 19 December 2011 - 11:34 AM
So that said I would still appreciate more inputs as my goal is to process as much material as possible, efficiently, and at a reasonable cost. Not asking too much am I. I really can't justify the higher cost of a full highbanker setup at this time so that's why I chose starting with the powered sluice concept and I have a 100 amp/hour AGM battery already that I can take advantage of. But if it makes more sense to go with something with more flow I'm open to gas powered. So if anyone listening has a similar setup and is happy with it I want to hear all about it :-)
Posted 19 December 2011 - 06:32 PM
Welcome to the forum!
I will have to disagree with some of what has been said so far, first let's see if I have found the recirculating sluice you have and the clearwater pump you're looking at.
Is this the sluice you have?
Is this the pump you're looking at?
If yes on both accounts, I think at 10" wide you will only get enough flow with the pump that came with the sluice if you have a good drop to on the sluice as mentioned.
The gas clearwater pump you're looking at will have no problem running that sluice, I have seen a couple of different guys use that same pump to run 2" dredges with a 10" sluicebox, if it will run a dredge it will definitely run that sluice.
The difference in a clearwater pump and a trash pump is that the trash pumps are not built to as tight of tolerances to allow semi-solids to past through the pump, a clearwater pump is built to tighter tolerances and should only be used pumping water that doesn't contain any solids, since a clearwater pump has tighter tolerances it will pump water at a higher PSI than a trash pump and it will be able to lift water higher as well.
See if you can get the supplied pump to work as mentioned by increasing the slope of the sluice and if you still not satisfied then go with your next choice.
Posted 19 December 2011 - 08:28 PM
Yes that is the sluice I have and the pump I was looking at. If you have seen guys using this same configuration that is the information I was looking for and someday I may like to dredge so it makes sense to invest in a pump I can use down the road. I can use the 1200gph pump at home for cleanup so everything gets used.
As said this is my first attempt at using a pump for prospecting and I do have members of my club that can help me get started but until then I have one more question with the pump. Since it is a clearwater pump what is recommended to use at the suction end for filter? I've seen metal screens in the prospecting shop just for this purpose but will they be adequate for this pump? Or should I add additional filtering? The guy at the shop recommended putting cheesecloth of sorts over the 12V pump so would that be a good idea for the gas pump also or would it be too much restriction and overkill? I'm sure it's a good idea to put the suction end in a bucket also.
Posted 20 December 2011 - 07:59 AM
If this pump is adequate for dredging that may be my next move and I assume all I would need is a suction nozzle and hoses. Skip mentioned he's seen guys use this setup for a 2" dredge but the pump is only a 1.5" so I assume I should plan on a 1.5" dredge setup. I can start a new topic on that as needed but any inputs more than welcome.
So I think I now have my solution unless anyone else wants to chime in and I appreciate all the help I can get :-)
Posted 20 December 2011 - 07:59 AM
Posted 20 December 2011 - 10:21 AM
Posted 20 December 2011 - 12:53 PM
When using a pump for a dredge there will be a smaller hose coming from the pump (output) to the high pressure connection on either a power jet or a suction nozzle, this high pressure water entering the jet or suction nozzle will create the suction via a venturi (a sizing down of the high pressure input of the jet or suction nozzle) this high pressure water will then enter the jet or nozzle and "suck water into the intake of the nozzle or the end of the jet hose.
The material that you dredge from the stream never enters the pump, only the water going to the high pressure hose goes through the pump, in other words "if" you sucked up a fish using a dredge it would do no harm to the fish, the fish would just ride up the suction hose and exit the sluice and never encounter the pump and I do say "if", fish are fast strong swimmers and you would have a hard time trying to get a fish in your nozzle.
If you have ever seen someone stock fish in a pond or stream, they use the same principal to get the fish from the stock tank into the water via a suction hose.
In shorter terms this pump will work fine for a small maybe up to a 2 1/2" dredge, a 2" will not be a problem for that pump, the size of a dredge is the size of the suction hose, not the size of the pump's output connection.
So you can understand it a little better, check out this Keene's info page on how a suction dredge works.
Posted 20 December 2011 - 03:14 PM
I have purchased the 1.5" gas powered pump from Harbor Freight and thinking about my next steps. I'm very pleased with the fact I can use it for a dredge down the road but for the first step want to set it up for powered sluicing as originally planned and a good test of how well the pump and sluice will work together. The sluice has a 1" male NPT PVC fitting so maybe leave it for the test run but will have to change it out to a 2" for eventual dredging and use a 1.5" reducer when connected directly to the sluice. I hope there is enough room inside the header for a 2" coupling as it seems to be tight inside there. For dredging looks like I need a 2" nozzle with 1.5" pressure hose fitting and matching hoses. Assume the hoses are the flat discharge hoses? Never dredged before and only seen some You Tube videos of dredging so I'm planning on tagging along on a future club outings to watch some dredging and see how it's done and fine tune what I need. I'll definately keep this forum in mind when I need info.
Posted 21 December 2011 - 08:11 AM
Posted 21 December 2011 - 07:12 PM
Posted 24 December 2011 - 09:50 PM
Posted 24 December 2011 - 11:43 PM
Nevada Nugget Hunters Forum
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Posted 25 December 2011 - 08:04 AM
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