8 inch gravity sluicing
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  1. #1

    Oct 2013
    western sahara
    524
    703 times
    All Types Of Treasure Hunting

    8 inch gravity sluicing

    Hi,everybody ,in my earlyer beginner times(i,m still one) i gathered some infos from this forum,maybe i can inspire others too.
    Thanks,saluti from europe ;emilio

    Last edited by spaghettigold; Sep 21, 2014 at 12:25 PM.

  2. #2
    us
    Feb 2012
    Prather CA
    Whites GMT
    2,807
    3351 times
    Finding GOLD
    I'll bet that is a bugger to get primed.
    Oddjob likes this.
    "The most inspiring thing about gold, is not the value, but under magnification, the true beauty of each piece. They are truly like snowflakes that never melt." Oakview2 Fly EAGLE Fly......

  3. #3

    Oct 2013
    western sahara
    524
    703 times
    All Types Of Treasure Hunting
    Hi oakview. Not at all if your intake is submerged at a higher level then discharge end and your hose don,t have to go over big hills, sometimes you don,t even need a cap at discharge end,just lift the end out of water,pressure fills the hose,when filled submerge it and let pressure push out remaining air bubbles,sometimes with alittle help by kicking the hose where bubbles are
    Last edited by spaghettigold; Sep 21, 2014 at 05:31 PM.
    Rockwerx and Oddjob like this.

  4. #4

    Oct 2013
    western sahara
    524
    703 times
    All Types Of Treasure Hunting
    [ATTACH=CONFIG]1056375[/ATTACH Sometimes maybe you need a cap,when you have no time or possibility to prepare your mining site Click image for larger version. 

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    Last edited by spaghettigold; Sep 21, 2014 at 12:19 PM.

  5. #5
    cr
    Sep 2010
    playa samara
    sd2100 infinium ls, 10 inch dredge
    293
    212 times
    oro e lavoro
    been following your build on another forum, good job ! i am sure there are a lot of people who would like to see the process.

    bill/cr
    Jimmydolittle likes this.

  6. #6

    Oct 2013
    western sahara
    524
    703 times
    All Types Of Treasure Hunting
    Hi bill,thankyou.i,ve been reading your posts too.i remember one post about the expanded aluminum you where using on your monster 10 inch,that you replaced with same exp.but made out of metall,correct?Well i learned much in the net and in post like yours and ouf course from the pro-kiwi dredgers ,i think i use almost the same expanded for fines like you.Glad to give infos back about gravity sluicing(thats what i ,m doing,no motors or mecanical devices allowed here).I,m still learning as i can not do it as my full time job ,it takes many weekends and holydays to get the experiences but if i can help i,m glad to do it.Saluti :emilio
    Oddjob likes this.

  7. #7
    us
    My Hearts Desire

    Nov 2010
    Camptonville, CA
    GMT&GM3 Whites MXT Pro, Shadow X5, Fisher 1280, OMG and the TDI
    1,608
    1294 times
    Prospecting
    this pic is from last year, this was 100' of 4" pvc, can't seem to find the picture of this year’s set up, which is much shorter than last year, i am running 60 feet 4" pvc with a 4' drop
    suction on the head is incredible, like running a motorized dredge, Problem i am facing seems the bends and dips, will load up with material then reduce suction. so disconnect and clean out get the flow goin again, doin by yourself is tough, taken the pipe apart and putting together in the fast water would just ware ya out, it's a laugh, tripin slidin, catchin stuff tryin to go for a ride, so i guess my question is do you find the 8" load up on the bends and dips? how much drop do you have for your length of hose?
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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    Last edited by 2cmorau; Sep 21, 2014 at 06:42 PM.
    The enemies of liberty will not rest, and neither can we.

  8. #8
    us
    Mar 2003
    Redding,Calif.
    5,854
    6698 times
    All Types Of Treasure Hunting
    Just gotta love it as been doing it for years and definately a learning curve motorless,miss the air but what's a miner to do...stop hahahaha never-John
    Attached Images Attached Images  

  9. #9
    us
    Sniper

    Aug 2012
    Redding
    Eyes - Nokta FORS Gold - Fisher Gold Bug II
    1,803
    1575 times
    Prospecting
    Banner Finds (1)
    I like it, that's badass!

    Do you have any pictures of your cleanup?
    Check out my Gold Sniping video's. http://www.youtube.com/CrainRacing

    Head in the water, butt in the air.
    Now I know why ducks do it!
    Underwater Sniper n00b

  10. #10
    us
    My Hearts Desire

    Nov 2010
    Camptonville, CA
    GMT&GM3 Whites MXT Pro, Shadow X5, Fisher 1280, OMG and the TDI
    1,608
    1294 times
    Prospecting
    your a howl John, this years set up, took awhile to find pic , don't have air this year, but ran air from the bank last year, sweet, this was last years one day take
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    The enemies of liberty will not rest, and neither can we.

  11. #11

    Oct 2013
    western sahara
    524
    703 times
    All Types Of Treasure Hunting
    hi 2cmoreau,john and neo tokyo
    I have 2pieces of 26 feet o 8inch polyurethane hose with pvc spiral,they are connectable if needed with a oversize coupling.InAttachment 1057088 In the video set up i had nearly 3 feet of drop on 26 feet of hose,but no dips other then the one when hose goes up to the flare.I had no build ups ,but this is a ideal prepared site during a one week trip.My first production trial with the 8 inch by the way.It was just a dream to work with ,even though i had only c.a.12 hours of nozzle time and a partly loss off concentrate because of a waterbomb(thats how they call it where i dredged) during clean up.Was a little shock but nobody got hurt and we found all the gear the next day downstream,but had to rebuild the dam.Also a local goldpanner denunciated us by the parkranger,but he made a fool of himself in front of all,as i had all the permitts required.Dam after waterbomb;Attachment 1057103 sluice made it thru the night,but our tub with best part of concentrate emptyed himself back to river;Attachment 1057105good thing was the tailings build up swept away too.Clean up pics after first test runs;Attachment 1057107 Attachment 1057113 Attachment 1057114 black mat first section after two hours c.a.Attachment 1057123Also the cemented gravel layers where hard to work,but good thing was there was only 3feet to the claylayer that acted as bedrock.Attachment 1057149
    Generally i like to have 10%of drop related to hoselenght i use,so for your 60 feet you should have 6 feet drop,but may work also with 5 feet when no sharp bends and dips there. 1feet more drop can make the The difference between a pain in..and a good workable setup.I have also a 4 inch set up with many different hoselenght,which makes you more flexible.I will buy also a 15 feet piece of 8 inch when i recovered from expences i had lately.The less hoselenght the less drop you need,so check your site for natural drops near where you dredge ,you have to carry less hose with you.
    Your creek in the pic above looks just ideal for a little dambuilt. ,Its past midnight here,write more tomorow,cheers,emilio
    Last edited by spaghettigold; Sep 24, 2014 at 05:09 PM.
    Oddjob likes this.

  12. #12

    Oct 2013
    western sahara
    524
    703 times
    All Types Of Treasure Hunting

    oversize coupling

    the oversize coupling again ,i have problems with postingClick image for larger version. 

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  13. #13
    us
    Mar 2003
    Redding,Calif.
    5,854
    6698 times
    All Types Of Treasure Hunting
    Just go to the sewer pipe department at Lowes/Home depot and life gets easier...and much cheaper. Sucking ANY air is the killer as much prefer a solid piece of hose or junctions should be fabbed to remain underwater so any suction leaks suck water and NOT air as then slowly but surely your prime goes unprime and your left standing there holding your hose John

  14. #14
    us
    Dec 2012
    Concrete, WA
    Nokta FoRs Gold, a Gold Cube, 2 Keene Sluices and Lord only knows how many pans....not to mention a load of other gear my wife still doesn't know about!
    3,632
    6323 times
    Prospecting
    Quote Originally Posted by Hoser John View Post
    .... as then slowly but surely your prime goes unprime,
    and your left standing there holding your hose John
    Don't ya just hate it when that happens?

    Younger hoses shouldn't experience this problem, but for the older
    ones it becomes a more serious issue.

    (John...you're such a good "straight man" that I couldn't help myself...)

    __________________________________________________ ________________________________________________

    I'd love to try a gravity dredge someday, but hauling in all that
    hose would be an awful lot of work if it didn't pay off well.

    Do you feed the outake end right into a sluice, or do you run it
    through a header box?
    Last edited by DizzyDigger; Sep 23, 2014 at 12:23 PM.
    2cmorau and 425jesse like this.
    Mike (aka Dizz)

    "If you love wealth better than liberty, the tranquillity of servitude better than the animating contest
    of freedom, go home from us in peace. We ask not your counsel nor your arms. Crouch down and lick
    the hands which feed you. May your chains set lightly upon you, and may posterity forget that you
    were our countrymen." ~~ Samuel Adams, 1776

    Dizzy's Super-Simple, Universal Rule of Forum Conduct: Don't be an ass.

  15. #15
    us
    My Hearts Desire

    Nov 2010
    Camptonville, CA
    GMT&GM3 Whites MXT Pro, Shadow X5, Fisher 1280, OMG and the TDI
    1,608
    1294 times
    Prospecting
    little black dots in the picture on the white PVC, rubberhose couplings, helps keep the water flowing for us old farts
    Attached Images Attached Images  
    The enemies of liberty will not rest, and neither can we.

 

 
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