1/16 Bucyrus-Monighan Walking Dragline

[modelman]

Any work going on here steve?

[9W Monighan]

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.





Lots and lots of bolts and rivets to do.






I'm hoping to get this brace built for each walking shaft bearing this summer.


Been wanting this picture for years! Never could figure out the size and bolt spacing on these brackets.








This is why Jack isn't being used. This will take some serious fabrication to repair this


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.


I wish I could get a video of the blasting. I doubt I would be allowed to be there when that happens.




I saw this interesting rock. I think it's a petrified tree trunk

[RCKiwi]

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

[9W Monighan]

Originally Posted by RCKiwi

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

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.