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Re: 1/16 Bucyrus-Monighan Walking Dragline
Was watching this build on the Garden and have been constantly amazed by what you have made. Being a machinist by trade, lets me know how much time you have invested in this build. Hopefully, I will see this outstanding machine built and painted digging in some dirt in the near future.
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Re: 1/16 Bucyrus-Monighan Walking Dragline
Since I don't have anything new to add I'll be posting some old build photos for everybody's entertainment. Here's a shot of the tub removed from the rotating frame showing the rotary slip ring that transfers the power up to the machinery deck. Notice the 135# marking. That was the weight of the rotating frame less walking cams.
[IMG]http://a.imageshack.us/img509/9978/9wmodel001xz8.jpg Uploaded with ImageShack.us[/IMG] [IMG]http://a.imageshack.us/img509/6051/9wmodel002rd1.jpg Uploaded with ImageShack.us[/IMG] Here's another old picture of the revolving frame.... [IMG]http://a.imageshack.us/img516/1873/9wmodel006jk5.jpg Uploaded with ImageShack.us[/IMG] This one should have been in the earlier post on the swing gear box that shows me fitting the box for proper gear alignment on the deck. [IMG]http://a.imageshack.us/img124/9027/9wmodel011ji0.jpg Uploaded with ImageShack.us[/IMG] |
Re: 1/16 Bucyrus-Monighan Walking Dragline
Nice work steve-in pics 1 & 2 I see holes tapped on the main rails between the swing gear and the slip ring. Just curious, what are these holes for?
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Re: 1/16 Bucyrus-Monighan Walking Dragline
Ah, that was a huge mistake! I originally was going to make collector rings like the real machine only 14 circuits. I bought a $45 piece of Static dissipating UHMW plastic to machine out then press copper rings in each. After I spent a whole day machining them I was reading that the material was a good insulator only to find that was a typo in the McMaster Carr book. Static Dissipating CONDUCTS electricity! The salesman said I could send the mtl back but I told him I already cut it up. So I scrapped the idea and started buying rotary slip rings that came up on Ebay and I bought several to try. Now I know how much current the machine uses I may be able to put a slip ring in with more conductors. I have one the same size and make but 24 wires. With this type I could hard wire the whole machine and forget about using a radio to control it.
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Re: 1/16 Bucyrus-Monighan Walking Dragline
looks good mabey i can get you some pic of a P&H 9020 it's going down hear on tusday and they are going to be lifting the tub off the center pin BIG JOB hope to get out of the shop and see how they lift it. i saw some mammoet trucks in town not shere if they will be doing the lift.
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Re: 1/16 Bucyrus-Monighan Walking Dragline
Thanks steve-I really like that slip ring you used. The one I used in my shovel had such small wires I really struggled with it. Also I needed more wires.
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Re: 1/16 Bucyrus-Monighan Walking Dragline
Hey Steve, you being a fine machinist, it sure would be cool if you could build the hydraulic pumps we use in this hobby. The kind off work you produce it would be an easy build. And it would keep the money in the good ol USA.
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Re: 1/16 Bucyrus-Monighan Walking Dragline
I would have to see one. I could add this to my long list of things people want me to make along with my own projects:D
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Re: 1/16 Bucyrus-Monighan Walking Dragline
Very nice work
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Re: 1/16 Bucyrus-Monighan Walking Dragline
This model is just amazing... The hoist drum/shaft assy looks just like the ones that have come through our repairs shops over the years. Showed the picture to one of our service techs and he was hard-pressed to believe it was a 1/16 model! Just a marvel of machine work.
Ken |
Re: 1/16 Bucyrus-Monighan Walking Dragline
Quote:
Hey Steve I have access to all kinds of coal about 30 minutes away ..Say the word and i will get a couple pickup loads and bury a layer in my back yard .LOL ..would give you a couple years work..after you strip then we can haul it over to "Steamer" robs and he can run it in his locomotives :D |
Re: 1/16 Bucyrus-Monighan Walking Dragline
Quote:
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Re: 1/16 Bucyrus-Monighan Walking Dragline
Lol...Maybe about 200 years of work for the 9W :):D
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Re: 1/16 Bucyrus-Monighan Walking Dragline
Steve, thanks for taking the time to re-post these pictures! More, more...
It still amazes me to look at all of the work you have done. |
Re: 1/16 Bucyrus-Monighan Walking Dragline
Wish you could work on this thing all the time, I'm ready to see it finished. It's going to be sweet.
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Re: 1/16 Bucyrus-Monighan Walking Dragline
Here are some photos of the walking machinery. I can't seen to find more. I wonder if that roll of film is still in my old camera that quit before I used digital.
Mock up of the upper and lower pices http://img132.imageshack.us/img132/5...4d39843co4.jpg Rough Milling the kidney shape on the matching half's http://img132.imageshack.us/img132/1...1396866ox6.jpg http://img132.imageshack.us/img132/7...6964934tu4.jpg Final finish and rounding over the track http://img132.imageshack.us/img132/6...1272386la6.jpg Profiling the T shaped pieces that that cam pushes against http://img132.imageshack.us/img132/1...1151859cx9.jpg http://img132.imageshack.us/img132/8...3889513rb4.jpg http://img132.imageshack.us/img132/1...1162749qh2.jpg http://img132.imageshack.us/img132/8...3889513rb4.jpg More milling and drilling http://img132.imageshack.us/img132/3...1124493yn4.jpg http://img132.imageshack.us/img132/7...7916595jb1.jpg Cam Milling http://img132.imageshack.us/img132/4...9900372jf8.jpg http://img132.imageshack.us/img132/1...4281898yo3.jpg Matching the square drive on walking shaft for a perfect press fit http://img132.imageshack.us/img132/3...2824092vj1.jpg Milling the mount on the shoe http://img132.imageshack.us/img132/7...8943977co7.jpg Milling the taper and bull nose on the bottom of walking unit http://img132.imageshack.us/img132/1...a994127he5.jpg 2 almost completed walking units http://img132.imageshack.us/img132/4...6347583he8.jpg |
Re: 1/16 Bucyrus-Monighan Walking Dragline
Good God you've got a lot of time invested in this, and it shows. Awesome work on the machining.
I've never heard of such a machine until I saw you on Scale4x4 and had to a search to see what it was. I can't wait to see a vid of yours in action. |
Re: 1/16 Bucyrus-Monighan Walking Dragline
Here's the link to my videos. There are some crude videos there of it's progression so far.
http://www.youtube.com/user/Scentlessapprentice9 |
Re: 1/16 Bucyrus-Monighan Walking Dragline
What CAD program do you use?
I was lucky to get digital readout on my milling machine but how funny to have a CNC. Guess that out of budget for modelling purpose only. Very impressing model, do you count hours put into it? |
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