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#26

20xwater
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From: Bathurst, NSW
Joined: 05 March 2014
Posts: 885
Member
11 January 2018 09:02 pm

Awesome design mate!!!!!! cool cool cool thumbsup thumbsup thumbsup

look what the pump law has done to you lol

2 users like this post: mudgee hunter, ignas

#27

7.62marksman
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From: Nowra, NSW
Joined: 26 July 2016
Posts: 5,517
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11 January 2018 09:11 pm

mudgee hunter wrote:

Thanx guys. Unproven as yet, test tomorrow.
And yes im sure of you are thinking 36v drill on the handle....... smile

How did it go mate


Highbanker, Sluice, Trommel, Gold Monster 1000 (Khaleesi), Garrett Ace 400i (Rhaegal), Go-Find 40 (Nymeria), Non Turbo 2.8lt Hilux (Turtle), NAPFA member ----A disposal technician at a dead run outranks everybody

#28

Philthy
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From: Wagga Wagga, NSW
Joined: 11 June 2014
Posts: 77
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12 January 2018 08:44 am

Definitely interested in seeing how this one went.


Making my fortune, One coin at a time!

2 users like this post: mudgee hunter, ignas

#29

Mackka
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From: Brisbane
Joined: 18 February 2014
Posts: 3,002
Member
12 January 2018 09:23 am

Come on Mudgee, we all want to see how you went.
Mackka

#30

mudgee hunter
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Joined: 02 January 2017
Posts: 779
Member
12 January 2018 09:41 am

Awh, sorry people. I met up with Balmain Bob, Muzz and his wife that day on the Meroo.
The Meroo didn't even have a flow, so I ended up trying a different tatic that was less then bad.
It wasnt untill the very last 40kg of dirt I processed in the banker I got a tiny bit of color.
Worst day I have ever had out in the gold dept. But it was great to catch up with all of them.
But I intend to get out there Sunday and try it out further down stream.
it's still in the 4x4 all shiny.

2 users like this post: Mackka, ignas

#31

Haydos
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Joined: 17 August 2017
Posts: 16
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27 January 2018 02:31 pm

Hey Mudgee, did you ever get around to using this beast, planning on building one today or tommorow and was just wondering weather you’d do anything differently, yours looks the business by the way mate thumbsup
Haydos

2 users like this post: mudgee hunter, ignas

#32

mudgee hunter
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Joined: 02 January 2017
Posts: 779
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31 January 2018 08:42 pm

Hi haydos, not as yet. Sounds wrong hey. Things have been difficult for me lately to get out. But soon I hope. And will post results. Sent you a pm mate.

#33

aussiefarmer
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Joined: 26 July 2015
Posts: 2,644
Member
31 January 2018 09:34 pm

I love the flip dump action thumbsup and i hope it works as good as it looks thumbsup .

I wish i hadnt have seen it because its got my brain twitching roll


Wish in one hand and poo in the other , See which one fills up first !

2 users like this post: mudgee hunter, ignas

#34

mudgee hunter
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Joined: 02 January 2017
Posts: 779
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01 February 2018 08:06 am

I've got enough punched sheet left over to make a 450mm deep x 300mm wide unit. Slightly deeper by 100mm.
Hunting for a good fish monger tub, stronger and larger. Handy for putting all your pans and crevicing tools in.
Take your time setting up the geometry of angle etc. Remembering to keep the lip at top above the top edge of tub.
and 45deg is probably the best angle for material capacity and tumble action. Alloy angle can easily be pop riveted on vertically for extra churning if needed.
The lower spigot shaft (gal pipe) needs to be long enough to get clearance on tilt action over tub. So make it a bit longer then needed, trim down to suit.

2 users like this post: aussiefarmer, ignas

#35

aussiefarmer
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Joined: 26 July 2015
Posts: 2,644
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01 February 2018 12:33 pm

My brains telling me to try a hexagonal basket for a rougher tumbling action but it would put more stress on the tub and shaft maybe.
Will hold off until we get a performance report on yours thumbsup as it may not need any changing smile


Wish in one hand and poo in the other , See which one fills up first !

1 user likes this post: ignas

#36

mudgee hunter
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Joined: 02 January 2017
Posts: 779
Member
01 February 2018 04:13 pm

I did think of that design aswell. Couldnt really think of any major set backs with it. So long as you have some backins support at hinged area.

2 users like this post: aussiefarmer, ignas

#37

mudgee hunter
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Joined: 02 January 2017
Posts: 779
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02 February 2018 09:04 pm

Im happy to answer any questions, and hear any input of modifications.
I do recommend a 3.5 up to 5mm holes. As smaller classification will speed clean up. Downside is that little nugget you might loose.
Punched sheet dose come in a variety of percentage punch. This is how many holes are in a certain square area. Basically how close the holes are together. The closer the better.
On stainless you mite notice one side is dimpled, and the other very flat and smooth. Keep the flat face on the inside. This helps avoid clogging/jambing of near sized material in the holes. Not normally noticeably on alloy, as it is punched easier without deformation.

Even black steel is fine to use. Spray the out side with cold gal. The inside will just get polished with use. Light coat if stored for a time.

the hinge was a heavy duty strap hinge, ($13) that is used for timber gates. The post side of hinge ( fitted at the top) was extended in surface size with a bit of black steel to spread the load over a larger area.
And flat bar was welded down each side of the gate side of hinge for stiffening.

The top half of the hinge will want to pull inwards to the tub, (higher load stressed area) the lower half (supporting axel) will want to push outwards to the wall of the tub.
Hence a backing plate wider than the top half of the hinge, fitted to the outside of the tub is recommended to spread the weights stress flex to the tub..

Last edited by mudgee hunter (02 February 2018 09:09 pm)

2 users like this post: ignas, Haydos

#38

mudgee hunter
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Joined: 02 January 2017
Posts: 779
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10 February 2018 10:29 am

I finally got out to give it a test run. The first material I used was real hard dirt/clay. It worked great and fast for breaking it down.
I tried a lesser amount in the traditional way, and it made me appreciate it more.
The 4.7mm holes are a good starting size to use.
It took very little effort to spin and has a good body postion to use, not squatting over all the time.

Draw backs, and mods needed...
45deg angle left too much wasted punched sheet towards the top area, to help spread the material out better. ( Slowing down the process)
so I will be reducing the pitch.
This may lead me to retro fit a lip around the top edge (40mm) tapering to a cone shape for easier emptying.
This should allow for a flatter angle.

The tumbling action should be inproved after this modification. So I will leave the internal fins etc in place till then.

THE TUB.
it was ok, the tub only needs to be about 30mm either side of the drum.
For the best of ease of using it, set up and total emptying. At least 10 -15 shovels, or when the clearance to bottom of drum is lost. (Full).

MAJOR MODIFICATION...
only to the tub idea. Going to play with the idea of making another drum 50mm oversize to the tumbler drum, that is basically cut through at sea level. A bit like an old flour/sugar scoop.
with a simple large drain plug at the lowest point.
But that will be a few hours of pondering away yet.

3 users like this post: Crow Pickens, ignas, malri_au

#39

aussiefarmer
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Joined: 26 July 2015
Posts: 2,644
Member
10 February 2018 05:45 pm

Get that done and build it out of alloy so its pretty and patent it you will be on a money maker big_smile
Its probably my next build as i have been researching self feeding hoppers for sluices but they all seem to rely on material being classified to make them flow properly. .
I did see an awesome design that with a few tweeks would complement your rock washer perfectly as it would self feed while you were tumbling material , it seemed to handle wet gravel easily.


Wish in one hand and poo in the other , See which one fills up first !

#40

20xwater
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From: Bathurst, NSW
Joined: 05 March 2014
Posts: 885
Member
10 February 2018 05:54 pm

was thinking if ya have a tall tub then that would increase runtime and be even higher off the ground for bad backs?

#41

malri_au
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From: Adelaide & Victoria
Joined: 02 February 2018
Posts: 454
Member
10 February 2018 06:18 pm

nice project,i like it!

let me know when ya start making them and the price!


Minelab SD2000|Bounty Hunter Quickdraw II|BH Pinpointer|Recirc Sluice|Pan|Noggin|Nubnutz|GM1000

#42

AussieChris
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From: Bathurst, NSW
Joined: 08 April 2015
Posts: 538
Member
10 February 2018 07:06 pm

Had to drop off an old stove at the tip, the whitegoods pile must have been cleared as there was bugger all there, did notice a few machines with nice stainless steel drums but some of them were pretty huge, like out of 8kg machines. I kicked myself as I had not put any tools in to remove a drum anyway. By chance there was an older machine there, looked inside it to find this awesome little drum, it's not stainless but it will do for now. It actually just lifted out. The tumbler (agitator) part inside it is steel or maybe cast I guess, I know sometimes cast is very brittle but this seems sturdy. But it's not plastic, so that is handy. I prob should have tossed a beer or something beside it for size, I guess it would be 400mm diameter by 250mm deep.

I see so many great tubs from US prospectors, it's a shame we don't have Lowes or Home Depot here.

1518248858_drum.jpg

1518248875_drum2.jpg

And yes I just bit the bullet and put the sprinkler on the lawn, the last few days has knocked it hard.


"About 10 minutes into it everything changed, buckets were flying ... people were bleeding. Girls were unconscious."

4 users like this post: malri_au, Mackka, ignas, Bluecurrant

#43

malri_au
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From: Adelaide & Victoria
Joined: 02 February 2018
Posts: 454
Member
10 February 2018 07:14 pm

good for a trailer job maybe,whats the weight like?

those things usually weigh a tonne.

bonus i guess is they're tough as nails.

can't complain at free tho right? big_smile


Minelab SD2000|Bounty Hunter Quickdraw II|BH Pinpointer|Recirc Sluice|Pan|Noggin|Nubnutz|GM1000

#44

AussieChris
Member
From: Bathurst, NSW
Joined: 08 April 2015
Posts: 538
Member
10 February 2018 07:32 pm

Nah its only small and light mate weighs bugger all surprisingly, and yeah freebie. Hard to judge without something to compare it to.

I have around 25 really rugged pharmacy totes (tubs) but unfortunately, this is just a bit too big for them so the tub is going to be the issue.

Like Hunter suggests need something sturdy like a fishmonger tub.


"About 10 minutes into it everything changed, buckets were flying ... people were bleeding. Girls were unconscious."

1 user likes this post: malri_au

#45

mudgee hunter
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Joined: 02 January 2017
Posts: 779
Member
11 February 2018 09:12 am

The length of your jack handle will dictate how much you have to bend over when using. And the parallel offset of the handle to the shaft will determine the ease of turning it.
Yes when I've finished it and totally happy with it, I will take it in a friend at a engineering company here to be made out alloy. Wish I had a tig.
Im bit unsure of the washing machine tub but. Mostly because you want as many small holes as possible. And that also assist in loosing the weight overall.
There are other options for the build I have considered. One was a horizontal drum , half in the tub. With a hinged door. Could be messey filling it and tipping.

All in all, the idea is to process material quickly whilst keeping transportation weight and size down with as much simplicity as possible.
Turning the drum took little effort. It even took the cordless drill idea out of the equation.
I might increase the jack hand ratio an inch wider ( expanding the distance of the handle to the shaft)
I did stop and reverse direction to mix it up better.
A good fitting axel to the sleeve is recommended.
I will post pictures after I have dropped the angle and done the top lip mod.
Welding the SS mesh was a bit painful, as it has a very poor heat displacement qualities, and tends to blow out easily.
Even if was alloy or black steel. The flat bar rolled into a hoop ring is almost a must in light guage material. This will allow you to put starting heat to the flat bar first, then weave the weld onto the mesh. Additional strength to the upper outside of the drum can be then gained with some pop rivets through the punched holes into the flat bar. Same on top ring, this top ring is there just to strengthen the lip for deforming.
Keep thinking guys.... and input is welcome.

Last edited by mudgee hunter (11 February 2018 09:24 am)

4 users like this post: aussiefarmer, Haydos, Bluecurrant, malri_au

#46

bjarvie
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Joined: 09 September 2017
Posts: 45
Member
25 February 2018 03:46 pm

this work well mate ?

#47

mudgee hunter
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Joined: 02 January 2017
Posts: 779
Member
27 February 2018 08:28 pm

70% happy with the design mate.
I've tried bucket sieves, waste of time. They dont like volume in them.
As i mentioned I need to lower the angle, as the material tended to sit to deep into the base and I was wasting the upper length of the drum. The further spread up the drum, the more surface area it will have to classify quicker.

I was impressed with the speed of breaking down the dry hard dirt and clay.
So wet river gravel will be even quicker.
Still mentally ticking over a better design for the tub idea.

I personally wouldn't go any larger than the 4.7mm punched holes.

Alloy would be the go. But it would definitely need at least a 30x3mm hoop band at the base and top. The hoop at the bottom will allow it to be welded up easy and strengthen the barrel. And the top one can really be just pop riveted. This will just help keep its circular shape intact.

Maybe hang off for a bit, and see what I come up with as far as the tub idea change.

Shouldn't be too long, as I was pretty honest yesterday with telling my boss what I thought of him, he must of liked it as he gave me a LOT of time off.
WAHOO! Going to be able to get out heaps now! thumbsup

5 users like this post: Bluecurrant, AussieChris, 7.62marksman, StoneTheCrows, Moneybox

#48

AussieChris
Member
From: Bathurst, NSW
Joined: 08 April 2015
Posts: 538
Member
28 February 2018 09:57 am

mudgee hunter wrote:

Shouldn't be too long, as I was pretty honest yesterday with telling my boss what I thought of him, he must of liked it as he gave me a LOT of time off. WAHOO! Going to be able to get out heaps now! thumbsup

Get like 10-15 years off or something? Chin up! only have to find 4 grams a day now to survive wink Keep inventing like Doc Brown you will be right.

Reminds me of an episode of Seinfeld called "The Strike". Kramer gets a phone call that the 12-year strike at his former job at H&H Bagels had ended so he decides to go back to work........

(pretty good episode it is also about Festivus and The Human Fund fake charity)


"About 10 minutes into it everything changed, buckets were flying ... people were bleeding. Girls were unconscious."

1 user likes this post: mudgee hunter

#49

mudgee hunter
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Joined: 02 January 2017
Posts: 779
Member
15 March 2018 12:23 pm

I went out 2 days ago without it, where I went had high ground diggings up the side of a hill , they had been chasing old river bed gold. And a big effort put in. I carted a few buckets of dirt down to the creek from their tailings. Really orange to yellow hard dirt and clay. And yes they sure did miss some gold. I do wish I had taken it as I could have taken it to the site, filled the tub with water and processed it on site. Some might know how this stuff turns after adding water to it.turns to sloppy soup.
With it broken down to the right consistency of water, and a good settling stir in the tub, one can easily pour of the top level of soup and add more water. So long as you are confident it is runny enough that tne gold has reached the bottom.
Breaking this hard packed dirt did require a pick.
Its coming with me next trip for sure!

1 user likes this post: Bluecurrant

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