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#1

Wozza244
Member
Joined: 21 April 2013
Posts: 35
Member
17 October 2016 02:23 pm

Just set up the pump and I'm just wondering if my setup is running ok before I head out in the field.

I took out the top riffle and mat while using a bilge pump but need to weld it back in if its the right way to go now that I'm using a petrol pump.
The pump is running at idle.

I have 2 videos of both configurations I can do with what I have, should I leave it or change it?
Cheers.

Test 1
http://youtu.be/UjiZyZDJm14

Test 2
http://youtu.be/WnIL2ruZOw8

#2

Wozza244
Member
Joined: 21 April 2013
Posts: 35
Member
17 October 2016 03:11 pm

Another test with some expanded mesh up top in the boiler section.
Seems to work better.

Test run 3
http://youtu.be/hV__7DsoP-U

#3

Ronk
Member
Joined: 02 October 2014
Posts: 152
Member
17 October 2016 03:55 pm

looks ok to me
now to test it out for real


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#4

blisters
Member
From: , ACT
Joined: 19 April 2015
Posts: 903
Member
18 October 2016 12:31 am

The water looks too violent over the riffles and too much aeration, I'd reduce the slope of your hopper which will slow the water hitting the sluice, I run mine quite flat. Those rooster tails will be throwing your stratified material back up in the air all over the place and your gold will sit nicely inside those bubbles. The first video you can see that the water jumps off the first riffle which defeats the purpose of the slick plate. If you wanted a slick plate then put a block of wood in there to raise the level so the water enters the riffles at the same height allowing the material to stratify. That's why the second and third video look better as the water is dampened a bit as well. You want the water to run over the riffles in a reasonably smooth action. I'd just run the second or third configuration, lower the hopper and adjust the water and sluice to get a smoother flow. By the way a 12mm square mesh over the grizzly will give better classification and stop flat stones clogging your sluice with a trade off that it requires more clearing.

Jon

#5

Wozza244
Member
Joined: 21 April 2013
Posts: 35
Member
18 October 2016 08:26 am

Thanks Jon, yes the expanded steel in the slick section definitely fixed the issue of violent water flow.
Can't wait to run some dirt through it.

Cheers mate.

#6

cecc
Member
Joined: 17 August 2015
Posts: 1,658
Member
18 October 2016 08:36 am

Yeah I agree with blisters, water looks to violent over those riffles. what angle are they. Good points by Jon.


Bring On The Color

#7

Wozza244
Member
Joined: 21 April 2013
Posts: 35
Member
18 October 2016 08:40 am

cecc wrote:

Yeah I agree with blisters, water looks to violent over those riffles. what angle are they. Good points by Jon.

I haven't checked the angle but at full leg height front and rear from factory I did read that it should sit at 1 in 4 on level ground.
It looks close to that anyhow.

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