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#51

1968falconxt
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From: , VIC
Joined: 29 January 2018
Posts: 127
Member
17 April 2018 12:52 pm

I have just gone with 15mm on my new tray. 25mm just looked too tall. But I will experiment with both.


X-terra 705 with 15" DD coil, Garrett pro pointer, custom prospecting shovel, dry blower, recirculating sluice with 6" Dream mat

#52

Occasional_panner
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From: Melbourne, VIC
Joined: 20 July 2016
Posts: 1,712
Member
17 April 2018 06:16 pm

From previously building alluvial stuff, I couldn't get my head around how small the dryblower riffles needed to be.
15mm looks small but it works, and most of your catch will be in the top tho riffles.


diy banker with dream matt and a diy dryblower. PMAV member.
I must have been a wombat in an earlier life, I just love digging.

#53

1968falconxt
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From: , VIC
Joined: 29 January 2018
Posts: 127
Member
18 April 2018 08:46 am

I guess you want the vibration to do most of the work. Tall riffles would require so much more air to move the dirt down the line and it might push gold with it too. I am glad you suggested making up another riffle tray.

My riffle tray material finally arrived from Reeds so now if the zinc platers ever get around to plating the riffle trays I can actually start testing the dry blower...


X-terra 705 with 15" DD coil, Garrett pro pointer, custom prospecting shovel, dry blower, recirculating sluice with 6" Dream mat

#54

Keitzy
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Joined: 20 December 2017
Posts: 83
Member
18 April 2018 01:59 pm

How'd u go with making a shaker fan mate? Did u nut it out or just buy one in the end.?

#55

1968falconxt
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From: , VIC
Joined: 29 January 2018
Posts: 127
Member
18 April 2018 02:36 pm

I have made one and am waiting on a couple of bearing bushes to be made. No idea if it will work yet but I will trial it soon. I have several different sized weights to bolt on too.

This is how I went about it. (Fan blades will be bent to close up as much gap as I can so the air has no choice but to push past the blades).

1524020971_capture.jpg


X-terra 705 with 15" DD coil, Garrett pro pointer, custom prospecting shovel, dry blower, recirculating sluice with 6" Dream mat

#56

Keitzy
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Joined: 20 December 2017
Posts: 83
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18 April 2018 05:16 pm

Looks the goods... not to sure how the flat blades will work tho, mine are bent at roughly a 30-45ish degree angle. It spun much faster with them bent.

#57

1968falconxt
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From: , VIC
Joined: 29 January 2018
Posts: 127
Member
18 April 2018 06:46 pm

I meant I will bend them to as much angle as the frame will allow (I will aim for 45deg). It's only flat because I didn't bother spending any time drawing it properly as I have cut a few sized fans to trial


X-terra 705 with 15" DD coil, Garrett pro pointer, custom prospecting shovel, dry blower, recirculating sluice with 6" Dream mat

#58

Keitzy
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Joined: 20 December 2017
Posts: 83
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18 April 2018 08:19 pm

Lol ok, misunderstood sry.

1 user likes this post: 1968falconxt

#59

Occasional_panner
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From: Melbourne, VIC
Joined: 20 July 2016
Posts: 1,712
Member
19 April 2018 09:23 pm

It would be good if you had a bearing carrier that supported the counterbalance top and bottom, the rpm and vibrations being carried from one side will cause unwanted stress.

Edit, you could have the shaft extent up past the carrier frame and have an identical counterbalance on the upper side, not quite as sturdy but would balance the load a tad better.

Last edited by Occasional_panner (19 April 2018 09:31 pm)


diy banker with dream matt and a diy dryblower. PMAV member.
I must have been a wombat in an earlier life, I just love digging.

#60

Occasional_panner
Member
From: Melbourne, VIC
Joined: 20 July 2016
Posts: 1,712
Member
19 April 2018 09:26 pm

Keitzy wrote:

Looks the goods... not to sure how the flat blades will work tho, mine are bent at roughly a 30-45ish degree angle. It spun much faster with them bent.

Always good to see you're on the ball mate neutral

Lol can you do my tax return.

Just stirrin mate thumbsup

Last edited by Occasional_panner (19 April 2018 09:31 pm)


diy banker with dream matt and a diy dryblower. PMAV member.
I must have been a wombat in an earlier life, I just love digging.

#61

1968falconxt
Member
From: , VIC
Joined: 29 January 2018
Posts: 127
Member
07 May 2018 08:47 pm

It has been a bit slow going lately but the wobble fan is finally finished. I have a diffuser to put on top of it to distribute the air if necessary. It is now ready to test.

Unfortunately I think I'm too late to take it to the goldfields this season. The wet weather is on its way sad

1525686381_screenshot_20180507-194357.jpg


X-terra 705 with 15" DD coil, Garrett pro pointer, custom prospecting shovel, dry blower, recirculating sluice with 6" Dream mat

2 users like this post: 7.62marksman, Mackka

#62

1968falconxt
Member
From: , VIC
Joined: 29 January 2018
Posts: 127
Member
07 May 2018 08:50 pm

I made a recirculating sluice in the last few weeks to process my concentrates out in the field while running the dry blower too:

1525686646_screenshot_20180423-171319.jpg
1525686646_screenshot_20180423-171042.jpg
1525686646_screenshot_20180423-171103.jpg
1525686646_screenshot_20180423-171243.jpg
1525686646_screenshot_20180423-170946.jpg
1525686647_screenshot_20180423-171120.jpg


X-terra 705 with 15" DD coil, Garrett pro pointer, custom prospecting shovel, dry blower, recirculating sluice with 6" Dream mat

7 users like this post: RM Outback, 7.62marksman, mudgee hunter, Crow Pickens, Occasional_panner, Mackka, Bobh

#63

mudgee hunter
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Joined: 02 January 2017
Posts: 610
Member
07 May 2018 08:58 pm

Dry blowers....Yeah, I've had the operation! Works well big_smile

#64

shakergt
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From: Esperance, WA
Joined: 25 June 2017
Posts: 436
Member
07 May 2018 09:07 pm

Now that sluice looks the business thumbsup

#65

Keitzy
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Joined: 20 December 2017
Posts: 83
Member
07 May 2018 11:07 pm

Occasional_panner wrote:
Keitzy wrote:

Looks the goods... not to sure how the flat blades will work tho, mine are bent at roughly a 30-45ish degree angle. It spun much faster with them bent.

Always good to see you're on the ball mate neutral

Lol can you do my tax return.

Just stirrin mate thumbsup

Lol shooosh you tongue

1 user likes this post: Occasional_panner

#66

Occasional_panner
Member
From: Melbourne, VIC
Joined: 20 July 2016
Posts: 1,712
Member
08 May 2018 07:47 pm

Nice work 1968, have you thought about selling items?
I could see that clean up sluice selling well.

You'll find you only need ribbed v matting if it's for clean ups.

Do a trial, collect all the material and run it back through with both kinds of matting.

As long as you are running only concentrates V matting is probably my preferred option.

Not sure if you have done it, but if you put in a vertical plate to make the lower tank split in two that will keep more sediments away from the pump.
As material washes down into the bottom tank you can keep abrasives away from the pump with a catch plate.
When the level rises it will overflow to the other side where the pump is situated.
You could have three sections if desired.
Kind of like bulkheads in a ship.

Last edited by Occasional_panner (08 May 2018 07:56 pm)


diy banker with dream matt and a diy dryblower. PMAV member.
I must have been a wombat in an earlier life, I just love digging.

#67

1968falconxt
Member
From: , VIC
Joined: 29 January 2018
Posts: 127
Member
08 May 2018 10:01 pm

Thanks. I have thought about selling some sluices. I'll probably make another sluice shortly and advertise it and see if there is any interest. The dry blower at this stage only for fun as I really want to hit the GT and shovel some mullock heaps.

I like your idea for the baffles in the lower tank and I will add one in. I have a small stand to raise the pump but it won't be enough. The sediment builds up fast.

I haven't tried V matting. I am very impressed with the dream mat as it collects 100% of the fine gold and is very fast too.


X-terra 705 with 15" DD coil, Garrett pro pointer, custom prospecting shovel, dry blower, recirculating sluice with 6" Dream mat

#68

Occasional_panner
Member
From: Melbourne, VIC
Joined: 20 July 2016
Posts: 1,712
Member
11 May 2018 05:41 pm

Good work mate, that clean up sluice could actually be 1/3 the size.
Mostly concentrates are a fairly small volume, you shouldn't need a really big machine to run them.

V matting is great, you can get it at bunnings and it really holds onto fine gold, you can run the water flow 1/5th of what you need to of dream matt.
Dream matt is a great primary catcher in a banker (I have it in mine) , my personal preference would be v matt in a clean up sluice, but each to their own.

Going to the GT with a dryblower will have to be put off for around 8 months mate.


diy banker with dream matt and a diy dryblower. PMAV member.
I must have been a wombat in an earlier life, I just love digging.


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