Re: 1/16 Bucyrus-Monighan Walking Dragline
 

your rigging is awsome there where no short cut's there your craftmanship is top noch. some day's i wish real rigging was done that nice and not just hack together.( CQMS) they should take a leson from you on how to build.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Found a good deal on some brass sheet today. I wish I had bought all of my brass 6-7yrs ago. This stuff has gone thru the roof in past couple years. I think there's close to $800 in the boom alone and could have been at least half of that if bought sooner. I'll be working on the outer skin around the revolving frame soon. Lots of rivets to install.

http://img207.imageshack.us/img207/2440/dscn1281u.jpg

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Is the structure of the house steel? If it is, how do you keep it from rusting? Heated shop? Around here it's so wet unprotected steel doesn't take long before rust starts to form.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

All steel. I'm fortunate to be able to keep it in my heated shop. It does get some rust now and then. I make sure to mist it down with WD-40 once and a while. I haven't decided to paint the steel or use tool black to blacken some of the parts. The interior may get painted green and battleship gray. I'm going to experiment with green patina on the house sheet metal since the 1:1 I'm modeling was green with black boom and frame. I'm hoping the black patina on the boom and frame will have some brownish look to it so it will look old rusted and weathered. The boom is already darkening on it's own after a year of use.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Agree about the brass prices, tried to locate some profiles, the manufactor wanted top $$. Guess it will never be much cheaper, chineses buys all they can.
Have started to stock up all material I need for coming models, always nice to have a supply at home!

$800 in the boom, and a lot of work to remove the better part of it, guess you have $600 milled off!
Dan

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Your right about milling away a few dollars of metal Dan.
A lot of the store bought small profiles are just milled solid bar. I have other larger brass extrusions that I own the the die with my design but the mill will not produce the tiny thin walled extrusions any more. Way back when I was designing the "A" frame, I inquired about having one of the model brass suppliers sell me some 3/4'' "I" beams. They told me that they would mill them for me. Well since I have a milling machine, I just made my own and went with steel for strength. It is a very time consuming process. Set up in one to three vices on the table depending on the length,I milled one side then turned it over for the other. One big problem with milling one side is there's a lot of surface tension and the piece will bow considerably so I needed to make sure I hammered the part down flat in the vice on the long parallel. After the second side the beam flattened it's self out pretty well. Brass not so well but straightening it was easy. All in all, I think they took me about 2hrs per foot and wore out a few 5/8'' roughing endmills

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Any progress updates on the 9W? And I was wondering If you plan to build the walkway up the side of the boom. Looks like lots of small steps to make-:D

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

No progress right now Tom. I haven't been down East yet to get the measurements of the house and walking bearing supports. Hope to get there by May.
The walkway is another measurement needed and If I'm allowed to climb, I need the deflection sheave framing up near the top of the boom.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Well, It's been 4 months since I did anything on the dragline and still haven't due to being busy with regular work and side jobs. But, I loaded it up or shall I say; walked it into my trailer this evening so I can take it down to Brownsville,PA to dig into some dirt at the show this weekend.
I can't wait to try some new techniques I've learned from reading and watching 1:1 draglines operating. I'll be trying out a new to me, Power Conditioner or Line Conditioner purchased from Evil Bay. This device is supposed to give me a clean regulated 115vac. Hopefully it will take care of any bad power line conditions like we encountered at the Cabin Fever Expo when my machine wouldn't work at all till the power in the building was fixed. I'll be taking an extra hoist cable encase the existing one fails. I noticed alot of areas where the wires are coming undone. It is the original hoist rope with approx. 15days of steady 8-10hrs digging on it. I wonder what the life expectancy of the 1:1 ropes are in similar conditions.
I'll also be trying the Tournarocker in real dirt for the first time. I had it out at the; ECMT meet in Brookville,PA and it did OK but I'm sure the one drive will quit working when a set screw backs out again. Just another small project that needs addressed in the driveline.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Had a great time digging in my dirt pile this past weekend with perfect weather. No problems, only production.

Digging in for a healthy bucket full.
http://imageshack.us/a/img38/2175/dscn1376hr.jpg

http://imageshack.us/a/img708/1310/dscn1375or.jpg

http://imageshack.us/a/img716/6855/dscn1374v.jpg

A couple helpers who I trained to operate the dragline.
http://imageshack.us/a/img155/6816/dscn1373c.jpg

A nice pile from about 6-7hrs of steady digging.
http://imageshack.us/a/img535/4011/dscn1372h.jpg

http://imageshack.us/a/img20/3351/dscn1371s.jpg

One of my Old Caterpillar tractors we fool around with. This is a 1934 model Twenty - Eight with a very rare side seat arrangement pulling a Fifteen Trailer Patrol grader.
http://imageshack.us/a/img707/6977/dscn1377g.jpg

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

That,s a HUGE pile of dirt steve- dragline must have been working good. I was hoping to see some brass sheeting wrapped around the house but I guess not yet huh.:)

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Looks like you had about a ton of fun ;)

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Not yet Tom. I still haven't been down East to get the measurements and kinda busy at work. The machine work flawlessly once I changed a jumper in the swing motor drive. Since the beginning, I had it set for "regenerate to stop" It always seemed to work very well until a slight adjustment change on the current limit and start/stop timing. I had one direction set perfectly but the other way it would glitch and jerk . Also I had the trim on the TX set one way some to keep the drive electrically centered.
Now while swinging either direction It's working smooth but it takes some practice to go from full speed to where you want to stop in a precise point,especially when the machine is not leveled very well as in my pictures. I had some trouble keeping it from sinking in the soft dirt I piled up first. Later I coated the top of the pile with some damper dirt to pack.

I would say that pile weighed at least a Ton :D

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Any work going on here steve?

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

As a matter a fact, I was at the 1:1 machine "Jack" yesterday finally, and took about a hundred more pictures of details and several measurements. It was windy and it was a real pain trying to send the tape measure down the side to my helper hold on to paper and keep from dropping my camera. I climbed half way up the "A" frame to get some much needed measurements of the bolts and plates on the diagonal bracing. I didn't have the guts to go all the way up the "A" frame and definitely not up the boom walkway due to the wind.

http://imageshack.us/a/img705/6567/photo1gy.jpg

http://imageshack.us/a/img831/5638/photofbo.jpg

Lots and lots of bolts and rivets to do.
http://imageshack.us/a/img525/3619/dscn1450y.jpg

http://imageshack.us/a/img96/3308/dscn1492p.jpg

http://imageshack.us/a/img715/961/dscn1496a.jpg

I'm hoping to get this brace built for each walking shaft bearing this summer.
http://imageshack.us/a/img444/7192/dscn1489s.jpg

Been wanting this picture for years! Never could figure out the size and bolt spacing on these brackets.
http://imageshack.us/a/img803/8121/dscn1519i.jpg

http://imageshack.us/a/img193/7422/dscn1531x.jpg

http://imageshack.us/a/img15/2179/dscn1520p.jpg

http://imageshack.us/a/img4/5185/dscn1514f.jpg

This is why Jack isn't being used. This will take some serious fabrication to repair this:eek:
http://imageshack.us/a/img684/6457/dscn1539em.jpg

Here are the other big draglines at this pit. On the bottom is a Marion 7400 and up top is Jack's sister "Jill" We got there later in the day and the drags were being operated on the first shift so I didn't get any video.
http://imageshack.us/a/img28/1695/dscn1543z.jpg

I wish I could get a video of the blasting. I doubt I would be allowed to be there when that happens.
http://imageshack.us/a/img577/6886/dscn1546a.jpg

http://imageshack.us/a/img7/9931/dscn1551v.jpg

I saw this interesting rock. I think it's a petrified tree trunk:confused:
http://imageshack.us/a/img21/6711/dscn1479z.jpg

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Great pictures! Is that broken section in Jack an I beam? Looks to have done a massive amount of work! Are they intending on fixing/saving him or will he go under the scrap mans torch?

Cheers

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

I don't think he'll be scrapped. They recently bought some parts from a diesel 9W that was scrapped and I'm assuming when the time comes the necessary work will be done . There's not many 9W's left as far as I can tell.
I didn't look up inside to assess the internal damage. I do know the frame work is built up just like the exterior's riveted angle plate design. From what I can tell that metal must have been really cold or just so many years of compressing just cracked apart. The rails are very worn and metal is peening over the edges if you noticed in the picture. I talked about it to the owner and he just said it needed some rail work. That was before I saw the real damage. He didn't seem too concerned about how hard of a fix it would be.
I didn't get inside because I didn't have them unlock the door, but looking up through a manhole under the machine I noticed the main drive motor was removed and one of the giant brake bands was setting on a shoe.
I sure hope they're not cannibalizing the machine for parts but only borrowing some for the other machine while the component is being repaired.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Great pictures steve-I was looking thru the pics and thinking how good this ole boy was preserved until I got to the swing circle:eek: OUCH!! That's nasty looking! Good to here it will be repaired. The machine seems to be in good shape for it's age. Lot's of good diggin years left. Looks like you have enough info now for a lot of outside work.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

I plugged some of the newly acquired dimensions into my master full size drawing of this machine and looks like I'm about as close to the real machine as I can get with my previous measurements and guesses.
I'll be starting the two outer walking shaft bearing towers first. I have some of it drawn up but need to do alot of detail work with the placement of the rivets and bolts.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

That's a lot of bolts! But at least they've got nuts on them and won't need tapping. Looking forward to seeing more!

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

There sure are a bunch. I was thinking there were more riveted joints on the exterior but now I can see. I will probably tap most of the holes and then put a nut on some. That would make the joint less likely to come loose. That's easier for me because those tiny nuts are a real pain to screw on a loose bolt. Nuts do show better detail than just a bolt head.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

I have a couple of questions for you steve-The towers on each side-will they have a bearing to actually support the walking shaft or will they be just cosmetic? About all those bolts-do you know how they drilled all those holes back in the 40"s? Did they have electric drills then? I remember using an electric drill in "1962" when working at a marine shop but I don't know when they first came out.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Not sure about portable drill time line but if everything was laid out in the shop correctly and punched then only minimal reaming would be needed.
Yes, the towers do support the bearings. Originally I was going to make the towers cosmetic when I started this years ago, I never envisioned being able to get next to the 1:1 machine and acquire all the drawings to boot so I'll be remachining the existing two bearings and inverting then like they're supposed to be but I want to tie it all together with some of the steel channel already in place so the tiny 0-80 bolts aren't stressed too much. 250# may stress them a bit.

Here are a couple screen shots of my full size elevations. I don't have the bearing completely detailed and no bolt or rivet holes drawn yet.
http://imageshack.us/a/img692/9991/f...tionsmodel.jpg

http://imageshack.us/a/img259/9991/f...tionsmodel.jpg

http://imageshack.us/a/img528/9991/f...tionsmodel.jpg

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Looks like you draw everything the way I do ;) 3D is a pita :eek:

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Thanks steve-I was thinking that lining those bearings up with the walking shaft would be kinda tricky but I'm guessing you know how to do that. I wouldn't have a clue about that. Judging by your pictures it's gonna look great!!

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

The bearings are not that hard to align. One of the pillow blocks on the interior didn't work so well because the deck flooring has never been cut and installed in that area so I left the bronze insert out. Actually now that a few years have gone by and all the walking it's done, the bearings have wore in up some. The big problem there is I need the make the walking gear parking brake. If you notice in some of my pictures or videos I have a wooden wedge shoved into the big walking bull gear locking it in the "High Cam" position for digging. If I'm not paying attention it comes loose and the shoes fall down and next thing you know the trailing cable is getting rubbed or the whole tub is spinning instead of the house.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

I saw that block of wood in your videos and knew it had to be doing something or it wouldn't be there. Jim Brennan told me about a circuit that will automatically stop the shoes at the correct position after walking. If this would help I'm sure if you gave him a call he would share this with you.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Can't wait to see the house finished and see it walking. Awesome job, she is massive! I found your next project too!!!
http://i1225.photobucket.com/albums/.../Trencher4.jpg

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

HA HA too big for me. I want a large shovel next if possible.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

next project mate ;) Hitachi EX8000

http://www.nasta.no/no/produkter/gra...6.9UFRnWYi.ips

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Well it's time to dust this machine off again and get working on it. My project now is to redo the outer bearing blocks. Originally I made these upside down not thinking that one day I would get accurate sizes of the 1:1 machine.

Removed shoe assembly
http://imageshack.us/a/img833/743/dscn1930lp.jpg

Old blocks ready for the scrap bin.
http://imageshack.us/a/img805/1092/dscn1933d.jpg

Here is a start on the new blocks.
http://imageshack.us/a/img820/5198/dscn1935e.jpg

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Steve,

What is it (the bearing) supposed to look like, do you have any photos? are the bearings impregnated, alum/bronze etc.? as far as the next project, a shovel would be a good choice. How big?

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Nice to see you have started building again, Steve. This is and will be a outstanding model, working just like the real one!
At one moment I was afraid that you shouldn't finish the model since you have it operational, this could happen to me, that's why I try to get everything done before starting up my machine.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

They are plain bronze bearings. Here is a photo of the 1:1 I am hogging mine
out in the center because I don't want to tap a 1-72 thread into a blind hole.
http://imageshack.us/a/img42/9484/48020.jpg

Here is the progress yesterday. I hope to finish the caps
tonight.
http://imageshack.us/a/img18/4790/dscn1937ka.jpg

http://imageshack.us/a/img577/8268/dscn1938m.jpg

http://imageshack.us/a/img51/1776/dscn1939c.jpg

http://imageshack.us/a/img401/4720/dscn1940s.jpg

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Great to see you back on the dragline Steve...I find im a little less anxious to finish when the machine is funtional..lol Go out and play ..ha ha ..I always learn more stuff about machining from you guys .Work holding ..Processes and how they are made in the different stages ..Learning from the masters ..thanks for posting all the great pictures

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Looks great, is the steel hot rolled?

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

The caps are 1018 Cold Finished bar. The main body are cut offs from a thick plate of Hot Rolled 1018.


Finished the blocks other than the mounting holes.

http://imageshack.us/a/img521/4789/dscn1941z.jpg

#5-40 tap
http://imageshack.us/a/img407/9869/dscn1944e.jpg

Setup and staring the bore
http://imageshack.us/a/img803/1751/dscn1945s.jpg

Finished bore 1.1875''
http://imageshack.us/a/img571/1017/dscn1946y.jpg

Reusing the bronze bushing from the first blocks.
http://imageshack.us/a/img252/9337/dscn1947v.jpg

Ready for the brass sheets that will make up the support towers.
http://imageshack.us/a/img850/6705/dscn1949k.jpg

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

I'm at a bit of a loss to understand why you changed that from the original assembly you had, it appears you've now lost quite a bit of rigidity from a vital area that carries the entire weight of the model at distant end points during travel. :confused:

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

I'm surprised that my original has held up so well.
The bearing will be stronger once I build the rest of the tower. Like I said in a previous post; I made the bearing upside down and now I'm fixing it like it's supposed to be . Or close to.
Joe, Take a look at what still needs built to complete the entire bearing tower support.

http://imageshack.us/a/img444/7192/dscn1489s.jpg

http://imageshack.us/a/img715/961/dscn1496a.jpg