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Homemade Drywasher


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#1 pickNgold

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Posted 24 May 2008 - 12:41 PM

QUOTE (pickNgold @ May 19 2008, 06:47 AM) <{POST_SNAPBACK}>
How about a thread on members hand made/home made, or modified prospecting equipment? Also the equipment at work in the field...pics! Just a thought....

pick


Since I started this post I will post the first examples of home made, and moded equipment. This is a ' Hal-Jo' puffer drywasher with the classifier/hopper removed(I always work pre-classified 1/8" material), and the legs reworked. A beat up horse feeder was cut up to make the hopper. The hole thing takes down in about 5 minutes with wing nuts...weighs 9 pounds, and fits in my pack frame bag easily.
Also shown is a small rocker/concentrator I made from stuff in my shop. The recovery material is deep V mat glued in solid. The upper tray removes to check for gold, and pour water for cleaning the sluice out. The main concentrator area is 7.5" x 22"... perfect for clean up from the drywasher...finished cons pan in a 10" pan easily. Happy lookin' laugh.gif

pickN

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#2 Rod

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Posted 28 May 2008 - 06:27 PM

Thanks PickN beer.gif

#3 Gilaoro

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Posted 04 June 2008 - 08:45 PM

QUOTE (pickNgold @ May 24 2008, 12:41 PM) <{POST_SNAPBACK}>
Since I started this post I will post the first examples of home made, and moded equipment. This is a ' Hal-Jo' puffer drywasher with the classifier/hopper removed(I always work pre-classified 1/8" material), and the legs reworked. A beat up horse feeder was cut up to make the hopper. The hole thing takes down in about 5 minutes with wing nuts...weighs 9 pounds, and fits in my pack frame bag easily.
Also shown is a small rocker/concentrator I made from stuff in my shop. The recovery material is deep V mat glued in solid. The upper tray removes to check for gold, and pour water for cleaning the sluice out. The main concentrator area is 7.5" x 22"... perfect for clean up from the drywasher...finished cons pan in a 10" pan easily. Happy lookin' laugh.gif

pickN


OK Pickin, Looks good! Attaching pics of the small one I build, Quad drivers love it! And a pic of what we are looking for!
Max

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#4 pickNgold

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Posted 05 June 2008 - 03:31 AM

QUOTE (Gilaoro @ Jun 4 2008, 08:45 PM) <{POST_SNAPBACK}>
OK Pickin, Looks good! Attaching pics of the small one I build, Quad drivers love it! And a pic of what we are looking for!
Max


That's a nice looking little machine, Gilaoro. Is it a plans built, or your own design...nice lookin' gold too! Thanks

pickN

#5 Gilaoro

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Posted 09 June 2008 - 07:35 AM

QUOTE (pickNgold @ Jun 5 2008, 03:30 AM) <{POST_SNAPBACK}>
That's a nice looking little machine, Gilaoro. Is it a plans built, or your own design...nice lookin' gold too! Thanks

pickN



Its based on Sam Radfords Plans with some changes, it can be made to fold and fit in a 5 gallon bucket with changes to the hopper system but most people tell me they just strap it on a Quad and go! In 30 seconds you can be testing that good looking spot in the wash.
Max

PS: BTW Sam gives talks at prospecting clubs on building your own equiptment, he is very knowledgeable, he lives in San Diego,CA and is a member of the SPMA and can be contacted through the SPMA website at:http://groups.yahoo.com/group/spma2/

#6 pickNgold

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Posted 10 June 2008 - 04:15 AM

QUOTE (Gilaoro @ Jun 9 2008, 07:34 AM) <{POST_SNAPBACK}>
Its based on Sam Radfords Plans with some changes, it can be made to fold and fit in a 5 gallon bucket with changes to the hopper system but most people tell me they just strap it on a Quad and go! In 30 seconds you can be testing that good looking spot in the wash.
Max

PS: BTW Sam gives talks at prospecting clubs on building your own equiptment, he is very knowledgeable, he lives in San Diego,CA and is a member of the SPMA and can be contacted through the SPMA website at:http://groups.yahoo.com/group/spma2/


Yes, I have 2 of Radding's plans books....good designs. Thanks for the info

pickN

#7 flyingbrass

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Posted 14 April 2010 - 03:11 PM

I've never used a drywasher but have wanted one for years. I plan to build one soon, a small sampling/backpack size puffer to start with. Any tips or advice from the DIYers? Later I'd like to make a bigger puffer that can be hand operated or run by a motor. Frank's Ol Yeller looks really nice.

I just got back from touring Lowe's with this project in mind, looking for anything inspirational. Nothing jumped out. I compared weights of different woods. Oak would be nice, but it's too heavy. Pine is lightest. Poplar is somewhere in between. Maybe oak for the riffles and softer/lighter wood for the rest?

I've read to use muslin for the cloth under the riffles. Any particular brand, kind, weight, etc. that is preferred? What is a good bellows material, and where can it be found?

#8 frank c

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Posted 15 April 2010 - 01:10 PM

flyingbrass, I have used a quality muslin fabric for the riffle tray you can find it at a Walmart or material store.
I have been using a 100% cotton material for quite a while now it may not last or wear as well or as long as a muslin but it sure finds the smallest gold in it.
The bellows you can use a good heavy canvas or duck type or a better material would be a pack cloth it is what various suitcases and backpacks etc. are made with.
Easiest way to test is to hold a piece of the material up to cover your mouth and try to blow air through it, if its really tough to get the air thru or darn near solid and doesnt let the air thru its good for a bellows. The nylon packcloth wears well Also a fabric called cordura is great if you can gain access to it its not cheap by any means.
Have fun building and testing what you build. I'm always trying something new to see what happens.

#9 flyingbrass

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Posted 15 April 2010 - 03:37 PM

Thanks, Frank. After looking at various designs, I think I'll try to mostly replicate your mini. Neat design. I might rig up a lever in place of the pull cord. Looks like it's mostly 1x2's and maybe 1x4(?) for the hopper sides. Are the riffles 1/2" or 3/4"?

I can only see a hint of it in the pics, but you seem to have angled boards inside the bottom of the hopper making a V to direct material into the feed slot. Also, I can't tell where exactly you have the hopper/tray hinge attached. Looks like the hinge itself is positioned to hold that rear end of the riffle tray in place.

I presume you have screen under the riffle cloth. Do you also have wood slats underneath the riffles?

#10 flyingbrass

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Posted 20 April 2010 - 06:18 PM

Michael88 also got bitten by the drywashing bug. He is about half done making one from Otto Lynch's plans. Both of us are researching electric motor and battery options, with an emphasis on keeping expenses low. Any suggestions for motors? I found a 12v windshield wiper motor at monsterguts.com, but it only does 53 RPM at best, which seems a bit on the slow side for top speed. I watched Thompson's demo video. He uses what seems to be a wiper motor, but his high speed is around 140 RPM.

Any suggestions or preferences for batteries? Thompson says a 12v motorcycle battery will power his machine for about 4.5 hours before slowing down. I don't think those are deep cycle batteries. If so, running them down that far should ruin them fairly quickly. I found some deep cycle "golf caddy" batteries in the $40 price range that may do ok, an example here: http://www.impactbat...cart-batteries/

#11 Gilaoro

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Posted 20 April 2010 - 07:49 PM

Michael88 also got bitten by the drywashing bug. He is about half done making one from Otto Lynch's plans. Both of us are researching electric motor and battery options, with an emphasis on keeping expenses low. Any suggestions for motors? I found a 12v windshield wiper motor at monsterguts.com, but it only does 53 RPM at best, which seems a bit on the slow side for top speed. I watched Thompson's demo video. He uses what seems to be a wiper motor, but his high speed is around 140 RPM.

Any suggestions or preferences for batteries? Thompson says a 12v motorcycle battery will power his machine for about 4.5 hours before slowing down. I don't think those are deep cycle batteries. If so, running them down that far should ruin them fairly quickly. I found some deep cycle "golf caddy" batteries in the $40 price range that may do ok, an example here: http://www.impactbat...cart-batteries/



You need to go to www.surpluscenter.com and look at item 5-1691, this is the perfect drywasher motor and if you find oine of mine this what I used 50% of the time, the other is not in stock in my new catalog.

I always wanted to use a linear actuator also but never got around to it. I have made drywashers since 1992, mostly puffers, old man Beck and the others like " Nicks Nugget" are classics, Russ Ford owns many original new Beck parts and some original Becks, built by Beck.

Any cheap deepcycle will work , get a solar panel at Harbour Freight and keep it charged.

Good Luck

#12 michael88

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Posted 22 April 2010 - 03:58 AM

Hello,
Yep; building an otto drywasher with some modifications. The plans aren't exactly detailed, but I am making do. The problem I have right now is on the bellows. Looking at the plans and using the crankshaft as a measurement, Otto's bellows don't move more than 2". His crank is 2" from TBC to input shaft. I think I want at least 4" of bellow and the most 8". I have cut my fabric to 8" at deep end. Half inch on both ends to make attachment leaves me at 7 inches. Am I thinking correctly?

Also, Where Otto has his crank attached with the bearings, this is where I plan to attach the electric motor.

I can only work on this project 1-2 hours a day due to medical issues so what is a one day project is turning into a week project and it's killing me! I want to be out in the field.

Mike

#13 michael88

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Posted 22 April 2010 - 05:09 PM

Here are some pictures:)

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#14 Gilaoro

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Posted 22 April 2010 - 07:53 PM

Your crank shaft is right,it will give you 4" of travel, 8" is to much.

max



#15 michael88

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Posted 23 April 2010 - 06:02 AM

Thanks Gilaoro. I will make sure my crank is at 4 inches. My bellows after installation is at 5 and half inches.
Mike



#16 Gilaoro

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Posted 23 April 2010 - 01:51 PM

Micheal88,


I beleive you misunderstood me, measure the crank in this way from center of fixed shaft to the center of the extenision, If yo hab 2' cenetr eto center then your stroke will be 4", unfortunatley I just got a computher with Win 7 and can't get my backups of Picassa to load and I am leaving for Boise momentarily.

#17 michael88

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Posted 23 April 2010 - 04:33 PM

Micheal88,


I beleive you misunderstood me, measure the crank in this way from center of fixed shaft to the center of the extenision, If yo hab 2' cenetr eto center then your stroke will be 4", unfortunatley I just got a computher with Win 7 and can't get my backups of Picassa to load and I am leaving for Boise momentarily.



#18 michael88

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Posted 23 April 2010 - 04:39 PM

Gilaoro,
I think I understood correctly. My input is at center. That leaves me at a 4" stroke. 2" down from center, 2" up from center= 4 inches.
I just completed my drywasher. I am still looking at motors and how I want to do my hand crank. I will post pictures soon. I made modifications to Otto Lynch's plans so I can fold the legs and adjust the degree of the riffles.

I will post pictures shortly.

Mike

#19 michael88

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Posted 23 April 2010 - 06:53 PM

Almost finished. I need to add the gate. I will be ordering the motor tonight. I will be making modifications to the legs so I can break the unit down. It weighs about 21 pounds without gate and motor.

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#20 Gilaoro

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Posted 23 April 2010 - 11:35 PM

That looks g00d, a well finished unit, you,ll be giving Frank a run for it soon! Nothinh wrong with a hand crank, the old timerss did well with them and the mexicans still do!

#21 michael88

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Posted 24 April 2010 - 02:35 AM

Thank you Gilaoro. I plan on attaching both. Just need to figure it out. I am just curious if it will work. I did make changes to the original plans. I wanted a unit that could be broken down and an adjustable riffle tray. Right now it's set at 35 degrees.

#22 russfordAZ

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Posted 10 July 2010 - 04:49 PM

Mike, How are you doing with your new DW since you finished in April ? You did a real fine job on it. I just found this thread or I would have posted earlier. I think you will find as most of us do, that a big classifying box and hopper is not that necessary. In fact can be a real problem. Look at pickNgold's first pic. A small puffer like these are great for sampling and the main thing is weight and portability.

I'm not sure what you mean by "adjustable riffle tray", but if you are talking about the angle the puffer sits at... well, that is usually controlled by placing your puffer on a hillside or the bank of the creek at whatever angle you want (level ground is hard to find in the field). You can also use your tailings to build the correct angle.

Mine is also a Sam Radding puffer. Two things I have done is remove the hopper to reduce size and weight although I didn't modify the legs because I didn't want to reduce the value. I feed it 1/8" screened material from a scoop I cut from a one gallon plastic bottle. Also, I prefer to operate it with one foot on the frame to hold it down and 'one finger operation' with a string rather than a lever, but it's a matter of personal preference. I added a spring on the bottom frame to bring the bellows back to a full downward position. That makes it operate much easier and faster than waiting for gravity to make it fall. Good luck ...russford

Beck Drywashers.



#23 michael88

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Posted 14 July 2010 - 05:51 AM

Good morning Russ,

It is sitting in the garage. I began having health issues while building it, and now they have gotten worse. But it sure does look pretty sitting there. The only thing I have left to do is put the lower shaft on and it will be ready to go. If I'm better by October, I will be out testing it.
Mike



#24 frank c

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Posted 25 August 2010 - 11:58 AM

Depending on the amperage draw of the motor you use try a $19.00 lawn tractor battery from Wallmart they do the job nicely for me and lightweight /small size is a plus.

#25 old timer83

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Posted 08 October 2010 - 04:52 PM

Thanks PickN <img src="http://www.arizonago...DIR#>/beer.gif" style="vertical-align:middle" emoid=":beer:" border="0" alt="beer.gif" />

hey, mister head honcho of us starry eyed, gold lookers and suds loving home makers of not so exotic machines, pickingold has an idea that i think de time dun cum. a forum for us builders and modifiyers. and michael88 n` pickengold sould be reconized as fine photogs!! :treasurechest:




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