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#1
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Re: 1/16 Bucyrus-Monighan Walking Dragline
I had a question from another site on how I'm joining my parts.............
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Early stages of the ESCO bucket. Bolting nightmare! View of some of the fairlead structure rivets |
#2
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Re: 1/16 Bucyrus-Monighan Walking Dragline
I finally got to solder one of the side pieces together. It was a little tricky till I got on to it.
Here's the last mock up before soldering.... View showing lamination's on the base Center break Hot out of the fixture. I still need to do some soldering on this side where the solder didn't flow thru. |
#3
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Re: 1/16 Bucyrus-Monighan Walking Dragline
NICE WORK!! Are you doing the resistance soldering?
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#4
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Re: 1/16 Bucyrus-Monighan Walking Dragline
Not yet, I tried but the big aluminum fixture sucks all the heat too fast for the medium size tweezers and 250W power unit. I don't have the proper conductor pliers for my bigger power units. I used my jewelers torch instead.
I set the finished truss between two counters and pushed down and there's no deflection with a reasonable downward force. This strength sure beats my temporary boom |
#5
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Re: 1/16 Bucyrus-Monighan Walking Dragline
Nice!! Hope to see it in Jan!! Only thing that is going to stop me, would be the weather! I am getting cabin fever NOW!!! Let alone by Jan.
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#6
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Re: 1/16 Bucyrus-Monighan Walking Dragline
Looking impressive, amazing what strenght you get from those brass tubes/profiles. Have had a drag line in mind for next project but thought I had to go with steel profiles on boom. Looking forward seeing it in real next time in us!
Dan |
#7
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Re: 1/16 Bucyrus-Monighan Walking Dragline
Beautiful work, really like the detail, it will be a museam piece when complete. Fred
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#8
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Re: 1/16 Bucyrus-Monighan Walking Dragline
Thanks you guys, Right now I've been designing the diagonal bracing at the splice through the cross section.Tiny work here and I may have to use some of the .040'' rivets instead of bolts,there's just no room in the 5/32 angles to clear both bolt heads. Once that's figured out I can solder the braces on the top and bottom of this section.
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#9
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Re: 1/16 Bucyrus-Monighan Walking Dragline
wow thats amazing!!!
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#10
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Re: 1/16 Bucyrus-Monighan Walking Dragline
You never seize to amaze me with your craftsmanship Steve.
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Scott "No load is too Small" |
#11
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Re: 1/16 Bucyrus-Monighan Walking Dragline
Here's a little work done but I have a paying job I need to get shipped by Thanksgiving.
Here's the tiny rivet I spoke of before. |
#12
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Re: 1/16 Bucyrus-Monighan Walking Dragline
geeeeeeeeeeeeeezzzzzzzz and i been complainin about 3/32 and 4/40 stuff lol you do amaizing work this is a cool thread to watch as you built very detailed and percision work very nicely done keep up the great work
__________________
I built this thing and have it working now what do I do with it? |
#13
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Re: 1/16 Bucyrus-Monighan Walking Dragline
That's getting really small steve-could you solder this or do you need the rivets for the scale appearance?
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#14
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Re: 1/16 Bucyrus-Monighan Walking Dragline
Henry, I remember sweating blind tapping the #3-48 bolts on the bearing caps for the drums and parts on the walking cams. #0-80 is a whole new world that I've learned on the structure.
Tom, I need rivets because the heads of the bolts will hit on the two axises of the angle. I'll rivet these and solder. I don't think just solder will hold well here and rivets look so nice. It will be clearer when I get it installed. |
#15
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Re: 1/16 Bucyrus-Monighan Walking Dragline
Wow. It keeps getting better and better. Truly a masterpiece in the making.
I've been working with a lot of 2mm srews on my model and I've come to the point where I'm going to need to tap some 2mm threads into some blind holes as well, in aluminum, so I know what you mean about sweating that job! 2mm screws are pretty small as well. Maybe not as bad a #0-80s though. Looks like you've got a lot more to worry about then I do! About all a guy can do is use some good thread cutting oil, go slow, and keep backing the tap out every turn or so. Maybe even stop, back it out, flush the chips out, or blow them out with air, and continue. At least the bolts and nuts will be easier! Are you going to loc-tite everything as you go?
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Nathan |
#16
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Re: 1/16 Bucyrus-Monighan Walking Dragline
Good Grief! What a masterpiece. I work in a machine shop and have done some pretty small pieces but this machine in the most detailed and intricate I have ever seen.
You are a true craftsman. Jordy |
#17
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Re: 1/16 Bucyrus-Monighan Walking Dragline
Thanks Jordy.
Nathen, I don't think I'll need locktite Some of the holes are threaded then I'll be running a nut on them too where needed. But the only problem with 0-80 small pattern nuts is they're 1/8'' hex and the bolt is 3/32''hex and you have to keep this in mind because of wrench clearance. In one of my pictures you can see my shop made socket wrenches, the Wiha's are too thick,I turned down a socket head screw to very thin wall to be able to tighten bolts. I even design this in on the CAD so it can be assembled.And if all else fails I'm using socket head bolts,much more esier to install I'm trying to keep very close tolerances on my hole sizes so there won't be much movement with the bolts. "It's supposed to line up" 2mm screws aprox .078'', aren't they about the size of #1-72? I have some 1-72's installed and they're much more esier to tap than 0-80's |
#18
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Re: 1/16 Bucyrus-Monighan Walking Dragline
Well, where's the progress pics at Steve, I can't wait to see the boom on it?
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Joe |
#19
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Re: 1/16 Bucyrus-Monighan Walking Dragline
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I need no distraction to be able to work on that boom. Looking at the date, I may have the first section pretty much done for Cabin Fever. I might be able to just set it on the temporary boom for the heck of it. |
#20
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Re: 1/16 Bucyrus-Monighan Walking Dragline
I spent some spare time this week between deer hunting and got this cross section brace complete less solder. It's pretty hard to put those tiny rivets in. Mashing them is easy once everything is lined up. I'll put the remainder in after I'm sure everything is squared up correctly.
Corner detail: |
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