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  #61  
Old 09-10-2010, 04:37 PM
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Default Re: 1/16 Bucyrus-Monighan Walking Dragline

Dan, I have a older version of BobCad V19 and it works ok for some things but can't do all the functions on my control without tweaking things some. I have their newer 2007 (V22?) but I hate it and wasted my money on it. I'm just an old dog who's processor can't take in much more info
As far as hours, who's counting. I'll be going into my 9th year soon. I did keep some track of the milling of the bigger walking parts and it was around 100hrs.
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  #62  
Old 09-14-2010, 09:15 AM
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Default Re: 1/16 Bucyrus-Monighan Walking Dragline

Another flashback that took me about 3 weeks in the evenings to machine out the fairlead from a 3'' x 3'' block of steel turning it 90deg each side.






















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  #63  
Old 09-14-2010, 09:45 AM
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Default Re: 1/16 Bucyrus-Monighan Walking Dragline

Always nice to see your work in progress shots. Wish I had the space for a full sized mill and lathe. Guess I will just have to plug along with my Sherlines! Still need to upgrade the CNC version. Looks like next year at the earliest now. Too many home improvements and vehicle repairs for this year.
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  #64  
Old 09-14-2010, 02:31 PM
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Default Re: 1/16 Bucyrus-Monighan Walking Dragline

Those parts are like arts, guess that with a CNC machine , you still have to put in hour of design of the part in CAD program. Best is that it can be reproduced from files if needed. Have not had any chance yet to test CNC milling but do a lot with laser cut with very good results from CAD drawings.
Hours, weeks or years, who counts but I couldn´t resist to ask, that´s no 1 question when showing the models, my model was started also 8 years ago but there has been some time without anything happening.
Dan
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  #65  
Old 09-15-2010, 08:29 PM
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Default Re: 1/16 Bucyrus-Monighan Walking Dragline

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Originally Posted by D8R View Post
Those parts are like arts, guess that with a CNC machine , you still have to put in hour of design of the part in CAD program. Best is that it can be reproduced from files if needed. Have not had any chance yet to test CNC milling but do a lot with laser cut with very good results from CAD drawings.
Hours, weeks or years, who counts but I couldn´t resist to ask, that´s no 1 question when showing the models, my model was started also 8 years ago but there has been some time without anything happening.
Dan
I don't save my CAM files too often because I machine things most of the time "one off" and to do fancy setups with all the tool changing would take too long. I do save the drawing files and if I need to make a second one in the future I just click the lines I want to machine and then generate a CAM file. Most of the time I just use the mill manually.
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  #66  
Old 09-17-2010, 01:50 PM
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Default Re: 1/16 Bucyrus-Monighan Walking Dragline

Now for the fairlead sheaves..








I used the same fixture for all three different size sheaves


Almost finished


Hollowed out are for side sheave clearance.








[IMG]htthttp://img509.imageshack.us/img509/69/9wmodel038jo7.jpgp://[/IMG]

Boring the wheel for bearing






Almost ready to cut loose.


Drilling the mounting holes for the guards that protect the wheels from the crows foot
jamming back into them. I still need to figure out how to machine them.

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  #67  
Old 09-17-2010, 02:16 PM
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Default Re: 1/16 Bucyrus-Monighan Walking Dragline

nice art work that must have bean a very costly hunk of cast or was it a left over from a real job.
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  #68  
Old 09-17-2010, 03:43 PM
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Default Re: 1/16 Bucyrus-Monighan Walking Dragline

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nice art work that must have bean a very costly hunk of cast or was it a left over from a real job.
That's 1018 cold finish steel. I had that laying around and it looked like it would work. My only regret was,I should have squared the piece up some because when you get to that size it maybe out some.
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  #69  
Old 09-17-2010, 04:52 PM
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Default Re: 1/16 Bucyrus-Monighan Walking Dragline

Amazing work! Boy I'd love to "play" with a mill.

The one use are using is it CNC?
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  #70  
Old 09-17-2010, 05:03 PM
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Default Re: 1/16 Bucyrus-Monighan Walking Dragline

Nice work.

I'd love to play with a cnc mill too.......I own one, just never seem to have time to play on it.
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  #71  
Old 09-18-2010, 02:48 PM
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Default Re: 1/16 Bucyrus-Monighan Walking Dragline

Nice work as always steve-What is the "crows foot" you mentioned in the last picture?
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  #72  
Old 09-18-2010, 07:22 PM
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Default Re: 1/16 Bucyrus-Monighan Walking Dragline

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Nice work as always steve-What is the "crows foot" you mentioned in the last picture?
Crows foot is just some slang for the socket that the drag rope,dump rope and chains come together.
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  #73  
Old 09-22-2010, 10:19 AM
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Default Re: 1/16 Bucyrus-Monighan Walking Dragline

I finally have a little to add. I decided to order the required tubing needed for my boom. Here's some of the 120' of 1/4''&3/16'' round tubing I'm using for the boom lattice work. I'm still waiting for the 5/32'' that's coming from another location. All in all, another $200 into the dragline.
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  #74  
Old 09-22-2010, 10:35 AM
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Default Re: 1/16 Bucyrus-Monighan Walking Dragline

Should look really good with a proper boom on it. Can't wait to see how it turns out.
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  #75  
Old 09-22-2010, 12:17 PM
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Default Re: 1/16 Bucyrus-Monighan Walking Dragline

going to be well invested!
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  #76  
Old 09-23-2010, 09:01 AM
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Default Re: 1/16 Bucyrus-Monighan Walking Dragline

Here's a drawing of the boom but some small changes and details still need to be ironed out.
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  #77  
Old 09-23-2010, 09:10 AM
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Default Re: 1/16 Bucyrus-Monighan Walking Dragline

I agree. Money very well spent!
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  #78  
Old 09-23-2010, 09:51 AM
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Default Re: 1/16 Bucyrus-Monighan Walking Dragline

Oh yeah, that's gonna look real nice.
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  #79  
Old 09-28-2010, 03:07 PM
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9W Monighan 9W Monighan is offline
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Default Re: 1/16 Bucyrus-Monighan Walking Dragline

I've been trying to get my brain started and try to remember where I was on this part. The Boom hoist. I trying to get the right motor with enough power and output. Right now it's way too slow. If my calculations are correct it would have taken 55 minutes to boom up That's just not going to work.
Sorry for the BIG pictures







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  #80  
Old 09-28-2010, 04:52 PM
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Default Re: 1/16 Bucyrus-Monighan Walking Dragline

Very nice work steve! I remember this from the garden site but I don't think it was finished. Did you cut these gears?
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