New Zealand Gold Prospecting & Metal Detecting Forums Archive

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nelson-goldy		Posted : Friday, 13 July 2012 9:21:02 PM(UTC)
Rank: Gold Flake Groups: Registered Joined: 21/06/2012(UTC) Posts: 22 Location: wakefeild in nelson Thanks: 1 times Was thanked: 3 time(s) in 1 post(s)		any ideas for a water pump (not petrol) and relatively cheap for a small highbanker i was thinking one of those boat bilge pumps or a large outside water feature pump but not sure water kind of gph/lph you need for it to work well thanks mark

simon		Posted : Friday, 13 July 2012 11:24:30 PM(UTC)
Rank: Gold Ingot Groups: Registered Joined: 7/01/2011(UTC) Posts: 789 Location: Central Otago Thanks: 33 times Was thanked: 239 time(s) in 150 post(s)		i have 3 bilge pumps. i think you generally need the big 3000gph one. there's not a lot of flow so you don't get much head height so you need the sluice as low as possible. and i think because of the flow rate you need to pre classify. i paid about 100 bucks for the 3000gph model. smart marine have a good range and ok prices.
		WWW

Cleggie		Posted : Saturday, 14 July 2012 12:07:26 PM(UTC)
Rank: Gold Nugget Groups: Registered Joined: 24/03/2012(UTC) Posts: 88 Location: Christchurch Thanks: 88 times Was thanked: 59 time(s) in 31 post(s)		If you can get a hold of a long length of that riffle pipe that you used for your DIY sluice and you have a stream with a good enough fall you could go gravity dredging or just feed the water into your highbanker. Check this link out: http://www.youtube.com/watch?v=GLyL5fTbnes I saw the same riffle pipe for sale at Bunings about $200 for 30M. Thought that the whole concept of gavity dredging really interesting, has it's limitations, sure but with no motors and just a tube in a stream very simple.

nelson-goldy		Posted : Saturday, 14 July 2012 1:21:07 PM(UTC)
Rank: Gold Flake Groups: Registered Joined: 21/06/2012(UTC) Posts: 22 Location: wakefeild in nelson Thanks: 1 times Was thanked: 3 time(s) in 1 post(s)		thanks simon ill have alook around ther is a couple on trade me for a decent price i pre classify anyway so its mainly just gravely sand and that is a very cool idea cleggie and i am going to have to give it a go thanks mark : )