1/16 Bucyrus-Monighan Walking Dragline

[SmallHaul]

The corners look perfect Steve, nice work.

[pugs]

Very nice work, can't wait to see the finished boom.

[td9clyde]

yea this is one awsome build the thing is can you actually fit the whole thing in one pic and still see the details??lol nice work very detailed

[tc1cat]

Very slick build. Hope to see it in Jan!!!!

[9W Monighan]

Originally Posted by td9clyde

yea this is one awsome build the thing is can you actually fit the whole thing in one pic and still see the details??lol nice work very detailed

Henry,I guess you need to see in person. Please refer to my new post in the general discussion topics. Maybe this would cure some of my dilemma Wide angle lens
Thanks again you guys, That one section pictured took me about 10hrs of fooling around I'm trying to get into full gear on this boom in the next month but doubt I can finish by Jan 14th don't want to go too fast and screw up.

[modelman]

Very nice work steve-you must have good eyesight. That is really small. I am going on 10 years with bad vision and I can't begin to tell you how frustrating it is.

[9W Monighan]

Tom, The eye sight is really bad close up but I had no problem spotting deer 800yds away this week
I got this section finally soldered together this evening just needs some cleanup and a tiny amount of filing for fit.

[Jared]

Wow, just beautiful! And I was grumbling because I took a couple weeks of here-and-there dinking around on my simple little boom. I've watched your videos but seeing how it goes together here gives one a much better appreciation for it all. This forum doesn't have the jaw-dropping smiley but if it did I would use it. I will be watching.

[Espeefan]

Wow. I'm not sure what to say, that hasn't already been said, but this project just keeps getting better and better! It is definitely a masterpiece.

[modelman]

Looks perfect to me steve! " a deere at 800 yds". I couldn't see an ELEPHANT at 800 yds if it were painted BRIGHT ORANGE

[lorenzo]

Wow. In the time where I wasn't here you've done a really fine work. I would like to look over your shoulders to learn from you. But that's more than 800yds away.

[9W Monighan]

Glad to hear from you again Lorenzo.

[lorenzo]

Seems I'm getting more time next time . More time for the hobby again.

[9W Monighan]

Well now that deer season is over for us it's time to get at this boom more. I should have the rest of these tubes cut and notched today and maybe start soldering some more.



Closeup of how the tubes come together. The .040'' plate is notched into the 1/4'' tube then the 3/16'' ones are notched. This is becoming stronger and stronger all the time,the solder shouldn't be stressed as much with this notching.

[Espeefan]

After replying to your thread three times, I feel like a broken record, so I'll just sit back and watch this masterpiece come together!

[D8R]

Now it´s clear why you had to spend a lot of money on tubing. Very nice piece of work, guess I have to visit you next time in us to get a crash corse in brazing!
Do you have drawing for this or did you have to climb the mast to get all meassurments needed?
Dan

[9W Monighan]

Originally Posted by D8R

Now it´s clear why you had to spend a lot of money on tubing. Very nice piece of work, guess I have to visit you next time in us to get a crash corse in brazing!
Do you have drawing for this or did you have to climb the mast to get all meassurments needed?
Dan

I could have measured a real boom of a 9W last year but couldn't get out to do it while it was on the ground being painted. But,
I have some drawings provided by Walter Bennett of Scranton,PA. He built a 3/8th'' scale 10W Dragline between 1967-1980 and has several photos and measurements he took back then. In his collection he had a set of photos and drawings dated:March 1969 that were of a 9W boom that he made by mistake thinking it was the same as his 10W. They are fairly complete but I still had to design it by referring to his photos and drawing and use my imagination alot. I have some drawings of my own of the point and I'll get to that I hope this winter.

Lorenzo,
The notching is exactly as the real machine and all the pieces are sized almost exactly as the real machine.

[lorenzo]

Interesting way of linking all the parts by notching and soldering. I'll keep that in mind .

[lorenzo]

Do you use an apaerature to hold all pieces in position while soldering or is the tension of the parts doing a good job?

[9W Monighan]

Originally Posted by lorenzo

Do you use an apaerature to hold all pieces in position while soldering or is the tension of the parts doing a good job?

Look at one of the earlier posts and there's a fixture I made to hold the sides together while soldering the lattice. The only problem was it was too big and sucked all the heat out of the brass too fast making it difficult to get the heat right for solder flow. I also made a rectangle to hold the splice section. I'm going to make up a fixture to hold the width correctly while soldering the tubing on the top and bottom. Some pieces will just hold themselves together while soldering.