Prospectors choice highbanker+mods

[magneticsand]

Does anyone here have one of these?

I have one of the older ones with the big riffles at the bottom of the page. Never had much luck with it. Packed up very easy.

I'd been running a second pump to feed spraybars.
Like so.

Worked fine.
But more stuff to carry. Harder on the battery.
12v 19amps.

I have a trip coming up. Decided to get it ready.

1. Removed the carpet.
2. Replaced the carpet with goldhog UR.
3. Removed the riffle trey, wont fit without new mounting holes anyway.
4. Added expanded over the UR.
5. The frame holding the legs, its attached by screws down the center of the sluice....so the carpet/mat was raised/lumpy. Countersunk them.
6. The legs are hard to get in place. Gave them some grinder time. Will repaint later.
7. The second classifier. Rust painted it.

Is UR and expanded going to work, or should I add the riffles back in? 3700gbh pump.

 

[G0lddigg@]

mate not the first time ive heard about these crappy designs... chuffs my cherry. anyway expanded over UR great choice, i'd be leaving some slick area up top of your sluice to allow the water to separate the material and speed up before it hits your mesh.

Your mesh is back to front, the way you have it currently will flush any gold out that your UR holds. If you can even one lazy l riffle 1/3rd the way down your mesh will help hold clunkers should they gain any speed and not settle into your mesh. otherwise you should be fine mate. good luck

3700 gph pump is not enought for the riffles you where running without running 75 degree angles. your mesh will do fine.

 

[Goldtarget]

I was going to ask the same question expanded over ur mat, I found the ur does a great job but it needs to be on the correct angle and water speed to really get it going. Doc has suggested this combo but I've never had more than to consecutive mats of ur so haven't tested. If it helps I've run expanded then ur in series with positive results. Flow rate appears high enough by the numbers. Do a test run put your mind at ease.

 

[Goldtarget]

Hey GD I wondered about this, what do you see as the advantage with expanded over ur as opposed to without. Seems a bit of a waste of ur to me the exchange within ur without it seems to be pretty darn good.

 

[G0lddigg@]

Hey GT in my experience a good mat will only function well when you can get the vortexes to stay active, without a mesh over the top often they will pack up or simply become too fast and too bouncy to catch fine gold.
By adding mesh with a gap you get two layers of water speed, the under mesh bit slower and above mesh quite aggressive. whilst all at the same time small vortexes from the mesh crashing into the vortexes of the ribb creating dropout and dead zones.

Additionally if gold does bound out where will it go? the downwards expanded metal (when facing the right way) is a backwards ramp whihc should push the gold backwards.

IN my little backpack sluice you can see the material move upwards backwards up the sluice until it jams under the riffles and into the ribbs then kind of moves sideways in the ribb to one wall where its stops and stays. these sluices i run a 2mm gap between very fine expanded and standard v ribb. works a treat

 

[Tige]

Hi guys. . I hav used ur mat before. . With and without expanded over top... I found expanded on top just blocked up ur mat so I tossed it
May be a good idea to mix it up a bit with some razor back matting..
Most important to get water speed right.
good luck with it. cheers Tim

 

[G0lddigg@]

Yeh volocity is key

 

[Goldtarget]

Cheers guys you can never learn to much.

 

[G0lddigg@]

Were always learning mate. Thats what I love about this forum so many situations so many people testing and each with their own findings.

 

[magneticsand]

mate not the first time ive heard about these crappy designs... chuffs my cherry. anyway expanded over UR great choice, i'd be leaving some slick area up top of your sluice to allow the water to separate the material and speed up before it hits your mesh.

Would the second classifier do this?
I've already cut and installed that matting, its a flared sluice, so I cant really reuse it.

Your mesh is back to front, the way you have it currently will flush any gold out that your UR holds. If you can even one lazy l riffle 1/3rd the way down your mesh will help hold clunkers should they gain any speed and not settle into your mesh. otherwise you should be fine mate. good luck
https://www.prospectingaustralia.com/forum/img/member-images/357/1407318208_20140806_152931.jpg

Noted. Will flip it, thank you.

3700 gph pump is not enought for the riffles you where running without running 75 degree angles. your mesh will do fine.

The original pump and riffles just didn't work. I've actually had two sets from them, the first set had crooked riffles AND gaps under the riffles, so they weren't even with the side rails. Their newer designs look better.

***
I appreciate the replies and debate guys. Honesty surprised to see how active the thread was in such a short time

 

[G0lddigg@]

Id just test it out mate and see how she goes. Try running with the red mat then try running without. Glad to help mate have fun out there

 

[magneticsand]

Decided that I wanted a little expanded, to catch anything big.

What are you guys using to plug unused holes in your sluices?
I'm currently using little squares of tape, anyone using anything better?

 

[slowflow]

roofing screws

 

[G0lddigg@]

i'd use a tig mate to fill in them holes

 

[backcreek]

Sicaflex fixes everything!

Someone once said that if you want something to go use WD40 and if you want something to stay use gaffa tape.