Re: 1/16 Bucyrus-Monighan Walking Dragline
 

I thought you had shown me those pics

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

I really enjoy seeing your machine setup's and the progressive machining shots. It's good to see a man in command of his craft. I look forward to more updates.
Glenn

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Here is the mockup of how the support tower fits into the roof structure.
The existing steel channels are not correct and have to be removed making way for the new brass sheets.
http://imageshack.us/a/img593/7853/dscn1950h.jpg

http://imageshack.us/a/img837/3139/dscn1951p.jpg

Setup for drilling and profiling
http://imageshack.us/a/img138/1438/dscn1953k.jpg

Thumbs pretty sore from drilling 135 holes.
http://imageshack.us/a/img594/9810/dscn1954b.jpg

Profiling
http://imageshack.us/a/img401/5693/dscn1956a.jpg

Ready for the angles to be riveted on.
http://imageshack.us/a/img585/449/dscn1957l.jpg

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Hello Steve you are making some progress I see. Are you going to be ready for Cabin Fever? That is a lot of bolts to drill and put in your eyes are going to be crossed when you get don with all that. You are doing some very nice work I wouldn't have the patients to do that that my problem I always want to get it done and see what it looks like. Ed

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

A little update on my riveting progress. I finally got all of the angles made and all but 8 are fastened onto the brass sheets.

Milling 3-1/2'' angle to scale = .218''
http://imageshack.us/a/img10/5053/dscn1960g.jpg

One of the walking shaft bearings I made about 10yrs ago.
http://imageshack.us/a/img259/6770/dscn1961g.jpg

Drilling the vertical support channels.
http://imageshack.us/a/img811/9710/dscn1962q.jpg

A few angles almost ready to rivet together.
http://imageshack.us/a/img823/9808/dscn1964m.jpg

Tapping some 0-80 threads.
http://imageshack.us/a/img855/456/dscn1965b.jpg

Installing the .040'' dia. rivets by the hundreds. These are squeezed
in a little press I modified.
http://imageshack.us/a/img405/8816/dscn1966v.jpg

The last angles fabricated and ready for riveting.
http://imageshack.us/a/img24/9365/dscn1967f.jpg

Mock up viewed from inside.
http://imageshack.us/a/img171/2026/dscn1968w.jpg
Outside
http://imageshack.us/a/img202/3979/dscn1970z.jpg

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

All I can really say is WOW! Beautiful work!

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

it grows even more!

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

The new updated towers and bearing blocks look incredible! Wow. So the time to cover all the inner workings of the machine is getting closer? Will you actually do it? It's really amazing to look at, and watch the drivetrain parts do their thing. All the design and engineering, not to mention the metal work that went into this model. Almost a shame to cover it with a cabin! I'm sure you'll make removable, but it's been a real treat to watch the model evolve through the last couple years. It just keeps getting better and better.

I will say I've learned a couple things from your machining process photos. Fixturing and drilling those tiny holes. What kind of adapter are you running for drilling the rivet holes? It looks like a mini chuck, but you are supporting the bit with a free floating collar of some kind? Any more info on that?

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

It's called a sensitive drill adapter chuck. Allows you to feed the bit down by finger pressure.

Great looking work on the dragline!

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Very impressive work, Steve! I like the idea (whether intentional or not) of accepting some partial "simplifications" to have an operating model as soon as possible, and then later perfecting the parts concerned.
Stefan

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Thanks guys. Been wanting this part done for quite some time.
Espeefan,Pugs is correct on the sensitive chuck. I had to use it because I couldn't get all four plates to hold down tightly together. I broke a couple drill bits before I used the finger chuck.
I intend on covering the frame and have some of the panels removable, but it will take a while still because I still need to make the curved roof trusses and the operators cab that contours with the main roof.

Glad you noticed my simplified parts. When I started this machine several years ago, I never dreamed I would be building this as close as I am to the 1:1 Help from others and getting permission to crawl all over the 1:1 has made a huge difference on my build.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Very nice work as always steve-will the bearing support blocks be fastened to the brass panels or the main frame or both?

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

The blocks are attached to the brass sheets. Also there are channels under the bearing that are welded to the main frame. Some of the weight is transferred to the roof supports just like the 1:1. Now it forms a giant arch from one side to the other.
Last night my son and I pressed the walking cams back on the shaft and I'll soon be able to walk it again. There is still several hours of work needed to build the triangular braces that support the towers from flexing back and forth. That'll be my next project when I get back at it. There is so many things I have to get done before any of the house gets built.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

How huge is that thing... also are you by any chance PAmining?

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

No relation to PA mining.
The machine is 44'' tall to A frame
35'' wide to the outside of it's shoes
house is: 37'' long
Boom: 120'' long
bucket: 7''x9''
total weight: 275#

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

wow keep up the good work on her. i should get back to some models but i seam to be spending all my time working on my CAT'S these days in hope of having some nice CATS as nice as your's.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Hi steve-there is one thing I had forgot about until I saw it on post#567-picture 8. That is the boom hoist. Could you talk a little about that. Does it work good, time to go up & down,etc.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

The boom hoist is made as close to the 1:1 I could build. Gears are the same tooth count but the motor is larger (physical size) than I would like. It works great though. I power it up with a bench type power supply because I don't have a on board supply that puts out enough current to raise the boom. When the boom is all the way down on the ground the motor struggles a tiny bit but once up past about 5deg. it works less. I timed it and it takes about 18 minutes to boom up to 30deg. where I work it most of the time. The first tries with the new boom was 25deg. but you had trouble digging the roll because the bucket had to be really tight to pull it up out of the cut.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

I know what you are saying about the motors steve. It's a shame when someone like you is building an exact scale model and you have to use these "HUGE" electric motors. But I don't see any solution for that in the near future. You are making good progress on the dragline and I am really looking forward to seeing more.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Hi Steve I am glad you got some pic of the shovel for Modelman I appreciate that. I hope next time everything runs smoother for me and I will have the Deere excavator, but I will have it for August show. Once again I would like to thank you and Scott for all the help, I really appreciate it. I thought the show was great and I picked up a lot of nice tools and parts. Hope we can get more involved in this show it could get to be like the German ones. Ed

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

:eek:

I will come see it in person if you bring it to any shows/meets. I suspect you are going to have to disassemble for transport

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

No problem Ed. I want to make sure all of the machines in our dirt pile work.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Next show is: Brownsville, PA. National Pike Steam Horse and Gas May 17-19 2013 http://www.nationalpike.com/

I don't disassemble this machine to move it. I bought an enclosed trailer and leave the boom up. I found this is the easiest way to transport it.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Found this video someone took at the spring 2013 Brownsville.PA show. There's a big rock in front of the dirt pile that I was pulling around but the camera man didn't get any footage of that. Not sure just how much it will pull. Never wanted to break it finding out.:thinking:
http://youtu.be/kkm5_hAmHIo

.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Nice video steve-if that big rock by the dirt pile is the one you were moving I would say that is a 100+ tonner in the real world (maybe more). Quiet impressive! The video shows good close-ups of the internals of the model while it is working. Looks like it was working flawlessly as always.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Here are a couple videos taken at the Cabin Fever Expo last weekend. Dragline worked flawlessly:D
Still no more progress due to more important things...work.


http://youtu.be/VhABOy8UHAo

http://youtu.be/VhABOy8UHAo

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Steve-looks like the 9W was working great as always. To me the dirt did not seem to be good for R/C models. Was there big rocks throughout the dirt-pile? I guess you work with what you have. Nice videos.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Tom , the moisture content was higher then last year . Perfect for compacting :D Which in turn , when compacted made it hard for my loader to dig effectively .

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

That makes sense steve. I couldn't tell about the moisture but I could easily see the big rocks and also a lot of smaller rocks which it seems would make it hard on the smaller models. The dragline seemed to handle the rocks with no problem but I would like to see some video of how the other models worked the pile. I understand that you modelers have no choice in the dirt that is brought in. You just dig and make it work. Looks like a lot of fun.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Steve,

Did the spring pike show happen this year? I did a quick search here but did not see any posts.

I just downloaded a time lapse app on my iPad and it would be cool to get a complete day recording of the dig. Would be cool to watch the dirt pile grow as the weekend progresses.

I'm planning to come to the summer show again this year if I'm not otherwise committed, I assume you are going to that one?

Jim D

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

The show was May 10-11 I put a link to someones picture they took.
Search under "Brownsville show pictures" in the general discussion topics.
Hope to see you and your wife this August. Should be a great turnout.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Steve,

Here is the time lapse footage walking to to job site August 2014 Pike Show.

http://youtu.be/1V7LJMArOVA

Jim

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

A little update on a new acquisition for the 9W. Had a chance to get the controls from a machine being scrapped. I had an idea to get the whole cab but after the scrapper cut if off, it turned out to be much larger and heavier than anticipated. :eek: ~12,000# 14'Lx 11.5'H x 9.5'W
Sooo we took the master switches and foot pedals. Wasn't very easy though but now I have them. I plan on wiring them to my machine so I can get the old time operators to give it a try. Most don't want to use the radio used now.

https://imageshack.com/i/pdSbdniTj
https://imageshack.com/i/f0r0xI42j
https://imageshack.com/i/iprUA849j
https://imageshack.com/i/ipDVRTrUj
https://imageshack.com/i/p7Zle9Auj

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

That is going to be amazing when its done... just when you thought it couldnt get any better, you set the bar even higher... great job..

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Ah good you finally got it . They're from the machine out my way ?

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

I hope you got the chair as well!

Kerst

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Got it Kerst. The seat is out of a newer truck,"air ride" but it's pretty crusty.
Notice how heavy duty the original mounting plate is for the seat. It must weigh around 150 lbs. It would swing out of the way of the two master switches so the operator can get up from the seat.
The swing pedal assembly is very heavy. I need to put it on the scale to see.
That this was a real PITA to pull up through the floor after it was cut loose. The floor is made of 1/4'' plate.
https://imagizer.imageshack.us/v2/85...537/L9zn6P.jpg

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

That's gonna be cool! Two questions: what is the third lever on the far left for? Propel? And is the doohickey on the back of the left console a compass? I can see where a compass could be handy to make sure you walk in the desired direction since you're facing the wrong way. Point the machine where you want to go, take a reading and then swing 180 degrees from that.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Yes. The third lever is for propel. On the Marion machine this came from, the walking function was on separate gearing electrically connected to keep them timed together, different than my Monighan style machine. The two cams on the Marion are separate with no shaft thru the width of the machine.
The box with the dial is an indicator for the walking cams showing the position 0-360 deg. so the operator knows when they are at top dead center so the machine is clear to swing.
There is also a bell mounted to the right hand console not seen in the picture that will ring when the hoist lines are near the point sheave. Very important while digging at night dusty or foggy conditions when he can't see the top of the boom.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

I cannot open the pictures on post #593. Anyone else have this problem?