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people online in the last 1 minutes - 0 members, 0 anon and 0 guests. (Most ever was 29 at 13:36:32 Sat Aug 3 2002)

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Macheteman
14:18:58 Sat
Apr 28 2012

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Re: 10" in 13 days

Kevin,

She's a thing of beauty. I think it's a perfect design for the vessel, especially the stern center pontoon, and the craning jet/flare. Brilliant... I might have kept the power hose single til after the 180 for laminar flow, and would certainly think about hinging the riffle frames, with the hinge side vertically adjustable for quick clean outs on site and the ability to change up the sluice medium. But what do I know......

  
thegoldgopher
14:32:57 Sun
Apr 29 2012

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Re: 10" in 13 days

Did she ever get a name? It's bad luck to have a boat with no name. Even Forrest Gump knows that! I know there was one about money, but hey, she's a classy lady. Give her a classy name.

  
dickb
04:23:38 Mon
Apr 30 2012

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Re: 10" in 13 days

Hi Kevin:

The lay flat to the jet worries me. Lots of unsupported water weight there. Every thing else looks really good and shipshape.

JMHO. :smile:

Dickb

  
AuTSaurus
07:30:58 Mon
Apr 30 2012

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Re: 10" in 13 days

Kev,

If you made another cradle like the one you have with the rubber, maybe you could attach it at/with the two bolts at the top of the flare connection shown in your picture.

That way it would always be supported, even when you raised and lowered the winch cable for the jet.

Maybe?

Greg
[1 edits; Last edit by AuTSaurus at 07:34:06 Mon Apr 30 2012]

  
Darkstar_Mining
15:21:07 Mon
Apr 30 2012

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Re: 10" in 13 days

Looking AWESOME!!!God bless and good mining. :doublethumbsup:

  
dickb
18:35:26 Mon
Apr 30 2012

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Re: 10" in 13 days

Hi Kevin:

I saw the support, my worry is strain on the camlock on the eductor and chaffing at the support bracket. You'll know how she works after sea trials. Way easier to work out the bugs in WA, than AK.

Still think she is a super dredge. :smile:

Dickb

  
Prospect09er
20:50:46 Mon
Apr 30 2012

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Re: 10" in 13 days

Stick out any further and that train is gonna get ya. :smile: j/k

Awesome job!

What blade are you using in your saw to cut that 6061?
[1 edits; Last edit by Prospect09er at 20:51:59 Mon Apr 30 2012]

  
Darkstar_Mining
13:39:34 Tue
May 1 2012

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Re: 10" in 13 days

You ain't kidding Kevin, I had safety goggles on and was getting pommeled by slivers! HOT!! I want a spool gun, we Tig welded all of our welds, needless to say again I want a spool gun!! It took 3 days just to reinforce the framing between the pontoons. We would have been done in a half day leaving alot more time for other work. I see how clean the gun welds and I am convinced. God bless and good mining.:fish_whack:

  
Darkstar_Mining
17:23:17 Tue
May 1 2012

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Re: 10" in 13 days

Ya, all those hard to reach places are going to get mig welded when we get to Nome, it would probably be fine as is but you never know, the Bering Sea is an unforgiving mistress. Well, Mike and I are climbing into the truck in 10 mins. I will upload the photos this eavening we want to beat the rush hour traffic in Cleveland. Our journey will be 24000 miles of freeway, wish us luck. Igor is expecting us by the fifth. God bless and good mining.:doublethumbsup:

  
thegoldgopher
14:44:02 Wed
May 2 2012

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Re: 10" in 13 days

check this out:

http://www.lincolnelectric.com/en-us/support/process-and-theory/Pages/pulsed-mig-detail.aspx

It is about pulsed MIG. What pulsed mig does is to form a ball of molten metal on the end of the wire, then like TIG, at the proper moment, it zaps it with current, putting it at exactly the proper spot. It is a preprogrammed thing in the computer that choreographs a series of changes in voltage and wire speed to lay down a series of puddles that form good penetration, good fusion, and really great looks.

The Lincoln site says it saves wire and gas. In our newsgroup welding group, the guys who have used pulsed mig for aluminum say it is the cats meow, looking like TIG, but as fast as any MIG. I'd get a demo before comitting to any new equipment.

I've pulled many of those little wires out of a lot of parts of my body. Yeah, you hardly feel them going in. That is what safety glasses are all about, but when I'm using a wire wheel, I like a full face shield.

  
dicklaxt
21:52:27 Wed
May 2 2012

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Re: 10" in 13 days

Been following along a bit,but missed out some where.I thought there was going to be some sea trials or is that being done in Seattle and/or Alaska.It appears it is enroute to some where,where's Egor at.

dick

  
jcazgoldchaser
02:29:15 Fri
May 4 2012

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Re: 10" in 13 days

Quote: kevyluvu at 07:37:26 Thu May 3 2012


Took down the pictures so I could run them through a file size shinking codec. Will reupload them soon.
I've been using this online resizer; pretty simple to use:
http://www.shrinkpictures.com/

  
molecule_counter
17:48:48 Sat
May 5 2012

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Re: 10" in 13 days

DS, if you go West from Cleveland, it's much closer to the west coast than going East for 24000 miles. Smile, good luck in your mining project.

  
thegoldgopher
00:56:31 Sun
May 6 2012

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Re: 10" in 13 days

Went online today to research pulsed MIG, just in case I do any aluminum fab: Very efficient. Lower wire and gas use. TIG looking welds. Deep penetration. Less burnthrough. Short learning curve.

The upside, a full rig is $10k. If you have your own gas bottles, that is.

Steve

  
thegoldgopher
15:23:02 Sun
May 6 2012

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Re: 10" in 13 days


  
dicklaxt
23:05:48 Mon
May 14 2012

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Re: 10" in 13 days

Did it make it to the barge on time?

dick

  
thegoldgopher
15:40:08 Tue
May 15 2012

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Re: 10" in 13 days

Kevin: As I posted once here before, please document welding failures. I think it will make the next dredge better. There will be a tremendous amount of flex in this, as it is built as a box, with two runners along the full length. There is a tremendous amount of diagonal stress that one would not have with a monohull, or barge. Then, like a Hobie Cat, there is a basic trampoline across it all, holding the pontoons together, AND, a tremendous amount of weight on that. Add the flexing and torquing associated when you winch, and it is easy to leverage and put strain on all the welds.

I would personally investigate MIG pulsed weld for the next one. They are $10,000, but you spent way more than that. And with the pulsed MIG, you might be able to get it done with just one, as their production rates are up there. And you can get them used, too.

I'm sure you've already learned a lot from this one, and it is just starting. Your failures and catastrophes will teach you more, and that part will be the important stuff.

Keep us informed on how you're doing, how much you're getting (secretly, of course, with words like a little, some, a lot, etc) and how things are working vs: how they were intended to work. And that includes welding. It is done with the idea that it's going to stick. Then reality, weather, rough seas, other boats, collisions and bumping, torsion, cold temperatures, et al rear their ugly heads.

It did come out looking awesome, tho, didn't it?

Steve

  
Prospect09er
18:57:02 Tue
May 15 2012

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Re: 10" in 13 days

thegoldgopher

In a couple weeks, there will be plenty of dredges in Nome for you to examine. All different sizes. Nearly a full spectrum of manufactured dredges will be present, afloat off Nome this year. Since itís painfully obvious you need to be versed on the functional operation of gold production dredges, this would be the perfect opportunity for you. Trying to reap information strictly from internet forums is poor R&D. You might be interested to know that welding is only one part of the whole equation.

You might also be a bit more circumspect of premature evaluations and unwarranted criticism of others.

  
kevyluvu
02:42:03 Wed
May 16 2012

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Re: 10" in 13 days



  
dickb
04:50:13 Wed
May 16 2012

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Re: 10" in 13 days

Hi Kevin:

She looks sweet. I like the way she is riding in the water.

I suspect that while dredging she will be sitting level in the water. Everything looks real shipshape and well laid out. Should be a real gold getter and turn a lot of heads in Nome.

Have a great year and be safe. :smile:

Dickb
[1 edits; Last edit by dickb at 04:51:49 Wed May 16 2012]

  
thegoldgopher
02:15:45 Thu
May 17 2012

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Re: 10" in 13 days

Time will write the final chapter, won't it?

Looks great. Going to love to hear the updates on operations.

I fail to see any criticisms on my part. I know there are going to be weld failures in the cold welded cold lapped welds of this MIG rig when it hits cold water. I am stupid in many ways, but I do know just a little about welding. Even owned the types of welders Kevin used on this one, and know their weak spots. So, I suggested that documentation of the failures, and the LEARNING from those would be a good thing. I do also predict that if this season turns out to be a pretty good one, that Kevin will invest in pulsed MIG for the next one, or to service this one.

So, with not even sea trials to base anything on, I guess it's just straight into the fray to find weak spots. Just hope it's not anything major.

Time will tell, won't it?

  
jcazgoldchaser
08:33:44 Thu
May 17 2012

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Re: 10" in 13 days

Man that looks fantastic.

What sorts of safety equipment do they require up there?

  
kevyluvu
04:07:42 Fri
May 18 2012

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Re: 10" in 13 days


To Steve the "know it all troll". The boat was built by a professional company years ago and has already seen multiple years of use in ocean conditions with much more weight than we are running. You know nothing about the process they used to weld the boat. You know nothing about building and operating a successful dredge. If you came to Nome you would fail miserably. I will not document S@%t for you and I will not be giving this forum updates on operations any longer. I joined this forum to help people. People like you leave a bitter taste in my mouth,and I have no desire to give my knowledge to help someone like you.

  
jcazgoldchaser
04:50:30 Fri
May 18 2012

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Re: 10" in 13 days

Well, that sucks. But couldn't say didn't see it coming. You can't change them, all you can do is ignore them. :mad:

Hope you'll enlighten the rest of us. Pretty pictures without a low coherence interferometry graph were doing just fine. :smile:

Stay warm, stay safe, and best of luck in your endeavors!

JCAZ

  
growler
19:52:40 Fri
May 18 2012

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Re: 10" in 13 days

Kevin, That looks Sweet!!!. I believe with your quad jet, you will be processing/recovering 2-4 times than normal. You should be able to use your throtle differently (rpm per depth). I have not seen in your pics or posts mention of trailer tire inner tubes to minimize fight with suction hose ( fullhose pull- empty hose slack ) altho dont look like you will be pumping water only much! Great boat, jim

  
thegoldgopher
22:06:13 Fri
May 18 2012

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Re: 10" in 13 days

Empty propane bottles make a down and dirty flotation device. Mostly cheap or free, and give around 30# bouyancy. If you barge your stuff up there, you can pick them up stateside for free, or $2 at yard sales.

Steve

  
dicklaxt
12:47:47 Sat
May 19 2012

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Re: 10" in 13 days

Darn I wanted to see her at work..


dick

  
AK_Au_diver
17:05:22 Sat
May 19 2012

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Re: 10" in 13 days


Propane bottles? To float a hose? That would be a dangerous and difficult mess.

For 10" dredges, and some 8" ones, people use buoys, the large ones orange ones that have the blue tie point on one end. They tie two or three of those along the hose, cut out a large hole near the blue part. The diver uses their air to add buoyancy as needed, or squeeze the float to let out air as needed.

  
Jim_Alaska
20:12:07 Sat
May 19 2012

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Re: 10" in 13 days

Used inner tubes are cheap, light, and can be deflated and packed around easily.



---
Jim_Alaska
Administrator
jfoley@sisqtel.net
 
 
Darkstar_Mining
07:32:26 Sun
Oct 14 2012

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Re: 10" in 13 days

ALL i CAN SAY IS MY EX WIFE FU**ED MY WHOLE PLAN TO BE ON THE ARGO THIS YEAR... NOW YOU STEVE HAVE CHASED THE BEST POST IN THIS WHOLE FORUM OFF..YOU SIR SUCK...KEVIN...IM TRYING AGAIN FOR NEXT FALL..GONNA BE THERE IN 2014 SPRING..KEVIN IF YOU BY CHANCE SEE THIS.. I AM Live Laugh Love on facebook...hit me up...gonna start all over and build exactly what I want this time...shes a bitch...women

  

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