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Thread: Hydraulic Riffles Vs Hungarian Riffles

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  1. #1
    us
    Mine President

    Aug 2012
    367
    326 times
    Gold Exploration

    Hydraulic Riffles Vs Hungarian Riffles

    Anyone ever use hydraulic riffles? Any opinions as to advantages over Hungarian riffles?

  2. #2
    Make America Great Again

    Apr 2013
    Oregon
    1,522
    3457 times
    All Types Of Treasure Hunting
    hydraulic riffles are used when losses drop below 90% because of over packing with black sands
    https://www.google.com/patents/US4863588?dq=4863588
    some good info here;
    http://web.archive.org/web/200102140...c.ca/era-e.htm
    Last edited by winners58; Feb 13, 2018 at 12:24 AM.
    " A pessimist is an optimist with experience "

  3. #3
    us
    Aug 2004
    Olympia WA
    Minelab Xterra 70, Minelab SD 2200d, 2.5", 3", 4"and several Keene 5" production dredges, Knelson Centrifuge, Gold screw automatic panner
    790
    1699 times
    Prospecting
    Hydraulic riffles are necessary when you run for long periods and/or you have a lot of black sand. In a small scale operation where you clean up daily or every 2 days, it is not an issue

  4. #4
    Charter Member
    us
    Look at the Historical Gold Mining photo albums on my page

    Jan 2013
    Huntington, Or./ Stanton, AZ/ former Outlaw California Gold Dredger
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    All Types Of Treasure Hunting
    It's best to have a variety of different types of riffles, which is why the Gold Hog system is so well respected. Hydraulic riffles have their place but as stated above, it's just another style designed specifically for dealing with extremely high iron content. Magnets also have their place in this same situation.

  5. #5
    us
    May 2009
    Sailor Flat, Ca.
    SDC2300, Gold Bug 2 Burlap, fish oil, ACME handbook for TRUE prospectors (unread)
    5,013
    10690 times
    All Types Of Treasure Hunting
    Banner Finds (1)
    problematic when recirculating.

    You have to be able to keep all organic debris out of your intake.

    Just one more thing to get clogged up

 

 

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