Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Thanks all.
Joe, I can't remember what sizes the cables are. I've been experimenting with 3/64'' , 1/16'', & 3/32'' 7x19 to see how flexible they are. But to be scale the drag (2'')=1/8'', hoist (1.5'')=3/32, boom ropes and bucket dump (1'')=1/16''

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Got some more progress this week. There's a lot of tiny details unforeseen here. Still need some splice plates.
http://img230.imageshack.us/img230/4716/1003537r.jpg

http://img686.imageshack.us/img686/6382/1003538.jpg

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Looking really good! Work faster! Wanna see more!:D

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

10% inspiration 90% perspiration:D--------- Well, lots of procrastinating really:p

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Looking better and better

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

That boom will be incredible when done!:cool:

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

I've been working hard on the slice part of the first section still. Came across a small problem where the side, top and bottom diagonals attach in the seam area but figured out a fix because soldering a bracket on isn't strong enough. If I was working in steel I could just tig weld it on. I probably could tig the brass but don't want to chance ruining a tee chord and a few hours machining a new one. I don't have any pictures yet.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Steve-I think a silver solder joint is about as good as a weld when done correctly but I'm sure you have this situation covered. Let us see pics whenever you can.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Here you go Tom. This is what I was talking about. I made these angle pieces that bolt on rather than just be butt welded on. The wall thickness is .020'' at the thin area. On the top view I don't have the 1/4'' tube milled yet,that's just one of the lattice pieces,also at that point there's two 5/32 angles back to back only one shown. Maybe by next week I'll have most of this area built I hope sooner.

Milling the profile before drilling holes
http://img198.imageshack.us/img198/7500/1003539z.jpg

End view of all 8pcs to be cut in half
http://img253.imageshack.us/img253/8007/1003540p.jpg

http://img42.imageshack.us/img42/1387/1003541f.jpg

Top view
http://img193.imageshack.us/img193/7176/1003542y.jpg

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

awsome work!!!!!!!!!!!!!! more pics please :)

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Now I see- this sure looks complicated! Looks like a "whole lotta thinkin" going on here.:cool:

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Excellent nice machine work but very expensive with all that brass. Ed

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Got some progress from all the thinking going on. It sure is nice to see how the pieces are coming together after several hours of machining and procrastinating.
I did a count of tubes that need milled for the top and bottom surface still and there's 44.:eek:

http://img42.imageshack.us/img42/7579/1003548a.jpg

http://img514.imageshack.us/img514/5352/1003547s.jpg

http://img821.imageshack.us/img821/3643/1003546.jpg

http://img20.imageshack.us/img20/806/1003545d.jpg

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Looks really good steve!! Have you counted how many bolts will be in just the boom?

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

HMM. Probably around 700? I do know there will be 76 at each splice.:p

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Wow. 9W Monighan, I remember your post from Scale 4x4, and replied a few times there, but now that I've actually caught up with your build over here, all I can say is this project is truly a labor of love. I loved looking at all the photos of the machining, in process. This is truly an epic build. I am in awe of your skills and talents.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Thanks,Nathen.

I spent most of the weekend working on the boom but only made 8 pcs. and half of 8 more tubes. Too many distractions updating the drawings. There's still about 36 more to go on this section. Sorry no pictures today. I probably could have gotten more done if I didn't have to sit on my porch giving out Halloween candy:mad:
I'm almost to a point where I can solder some of it together.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Anytning going on?

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Haven't done anything this week but drive to Baltimore,MD. and then up to Youngstown,Ohio to deliver a job and pick up a load of steel bar for my real job. While on the way home from MD. I wanted to stop at Dragline World to see Jim but I didn't have time. I hope to pickup where I left off Sunday on the boom but first I want to work on another paying job I've been fiddling around with this week. "Both regular and side work are once again getting in my way":D

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

A little time this evening so I made some more tubes.
http://img9.imageshack.us/img9/6448/1003559n.jpg

http://img21.imageshack.us/img21/7105/1003558l.jpg

This is were the bottom section breaks apart.
http://img839.imageshack.us/img839/5946/1003557r.jpg

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Great looking work!

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Looking better with every picture! I hope you have a big shop to work in. This thing is getting big:eek:

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

WOW!!! And I thought trying to work out the angle cuts on my rocket rack was a bear! Nothing in comparison to this. Going to try and make the Cabin Fever show in Jan. Really want to see this in person.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

it be great to see you lynn hope you can make it . Steve you got to work more sleep less :p looks great :eek:

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Wow steve your brass work looks awsome ,thing is looking huge too..I could just imagine being close to the 1 to 1 machine after seeing the size of a 1/16:) thumbs up ...it gets better every day

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

I had a question from another site on how I'm joining my parts.............

All of the above. I tig welded the ends of the steel beams where needed. Bolted with literally thousands of 0-80 bolts and up to 1/4-20 bolts on parts not seen. Riveted pieces together on the brass exterior with .040'' dia rivets. And I'll be soldering and bolting the brass boom sections.

http://img408.imageshack.us/img408/5227/1003277a.jpg

Early stages of the ESCO bucket.
http://img62.imageshack.us/img62/794/1003248.jpg

Bolting nightmare!
http://img690.imageshack.us/img690/613/1003162j.jpg

View of some of the fairlead structure rivets
http://img32.imageshack.us/img32/3412/1003006w.jpg

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....
http://img88.imageshack.us/img88/2633/1003560i.jpg
http://img109.imageshack.us/img109/4323/1003561.jpg

View showing lamination's on the base
http://img703.imageshack.us/img703/6971/1003563.jpg

Center break
http://img100.imageshack.us/img100/296/1003564j.jpg

Hot out of the fixture. I still need to do some soldering on this side where the solder didn't flow thru.
http://img573.imageshack.us/img573/1069/1003568.jpg
http://img593.imageshack.us/img593/6152/1003569.jpg

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

NICE WORK!! Are you doing the resistance soldering?

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:D

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.

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

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Beautiful work, really like the detail, it will be a museam piece when complete. Fred

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.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

wow thats amazing!!!

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

You never seize to amaze me with your craftsmanship Steve.

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.
http://img264.imageshack.us/img264/3743/1003576l.jpg

Here's the tiny rivet I spoke of before.
http://img708.imageshack.us/img708/4321/1003577p.jpg

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

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?

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.:p

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.

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?