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Gold Prospecting
Do It Yourself (DIY) Projects
Rockerbox With Hand Operated Bilge Pump
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<blockquote data-quote="reefer" data-source="post: 604454" data-attributes="member: 775"><p>Wish I'd been there mate...still not quite right though...thought you might need riffles in that set-up...when you first posted the pics those mats don't create much low pressure behind their little ribs without a good and even source of water flow over them...at least 3/8" for that size..so I have found early on in the day <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /> the double action pump is what it needs .., and 2" would be the one more likely to give you the flow rate you'll need especially once you wack in some riffles...in which case you'd want around 1/2"inch of water running over them if their in the order of a 1/2" in themselves...been there and done that years ago running a banjo in the way of the old timers(and my Pop and Dad were old-timers of the first order and knew what they were on about...as I think you have seen in the pics the scoop dad was using through near on a gallon of water onto grate in one almighty SSSLLOOSHH...That's how they broke up the clayey bits and sent it pelting down the back plate and spew'n down the sluice!...old pop used to say "if'n yer want the bloody riffles ta' work good yer gotta send as much water over em.' as is how high they is'. :lol: :lol: anyway mate...food for thought! and a work in progress. :lol: <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite6" alt=":cool:" title="Cool :cool:" loading="lazy" data-shortname=":cool:" /> </p><p>"</p></blockquote><p></p>
[QUOTE="reefer, post: 604454, member: 775"] Wish I'd been there mate...still not quite right though...thought you might need riffles in that set-up...when you first posted the pics those mats don't create much low pressure behind their little ribs without a good and even source of water flow over them...at least 3/8" for that size..so I have found early on in the day ;) the double action pump is what it needs .., and 2" would be the one more likely to give you the flow rate you'll need especially once you wack in some riffles...in which case you'd want around 1/2"inch of water running over them if their in the order of a 1/2" in themselves...been there and done that years ago running a banjo in the way of the old timers(and my Pop and Dad were old-timers of the first order and knew what they were on about...as I think you have seen in the pics the scoop dad was using through near on a gallon of water onto grate in one almighty SSSLLOOSHH...That's how they broke up the clayey bits and sent it pelting down the back plate and spew'n down the sluice!...old pop used to say "if'n yer want the bloody riffles ta' work good yer gotta send as much water over em.' as is how high they is'. :lol: :lol: anyway mate...food for thought! and a work in progress. :lol: :cool: " [/QUOTE]
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Gold Prospecting
Do It Yourself (DIY) Projects
Rockerbox With Hand Operated Bilge Pump
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