1/16 Bucyrus-Monighan Walking Dragline

[Rvjimd]

Steve,

You got it all back together, ready for Cabin Fever right? See you in a week.

Jim

[9W Monighan]

Had to order another 2000 0-80 socket head caps screws.



A frame going back together. This part still needs several angle braces added. That will come later when time permits.



Walking shaft




Machinery frame


Shoes have paint


Parts



Assembly begins




After about 16 hours got some more assembled. Not painting any brass parts yet. There is not enough time to get these parts done either


Boom attached just had one heck of a time getting the suspension cables untangled.

[JAMMER]

Steve isn,t it amazing what a little paint will do. Looks great keep up the great work. Ed

[Bo Wallen]

Holy Chunky Mother of Hot Applesauce !!! Thats Beautiful Right there.
The Main Attraction at Cabin Fever Expo 2017

[9W Monighan]

Originally Posted by JAMMER

Steve isn,t it amazing what a little paint will do. Looks great keep up the great work. Ed

[modelman]

Looking good Steve-I see you are giving Walter Bennett a challenge on most bolts used (rivets). I think I see a brake band on the rear drum. Is this a work in progress? Nice job!!

[9W Monighan]

Originally Posted by modelman

Looking good Steve-I see you are giving Walter Bennett a challenge on most bolts used (rivets). I think I see a brake band on the rear drum. Is this a work in progress? Nice job!!

Brake band is in progress. No time right now. This was one of the reasons for the tear down. Now I have the machining done on the main frame to attach the necessary parts. I was going to use servos to actuate the clutch and another to set the brake. Changed my mind because I think a servo will burn up if the clutch doesn't shift exactly as it should without binding. And if it binds, I can't hear or see it with all the outside noises at shows. I am experimenting with some lineal and rotary solenoids.

[9W Monighan]

Came across this video today of the first time out with my new Marion controls.


https://youtu.be/vEEWWk-L6lo

.

[Rvjimd]

Looks like a good time to me!

Jim

[9W Monighan]

Decided to spruce up the bucket with some red paint to resemble the ESCO bucket I duplicated some before this weekends "Big Dig" at the National Pike Show. Last time out at the Cabin Fever Expo, I had trouble seeing my bucket with the lighting there. There are still wear plates and better teeth that need made on this bucket but that will come some day.



A quick dusting off in the sand blaster booth

[Rvjimd]

Sweet! Gona be fun watching that get dirty!

See you Thursday afternoon!

Jim

[9W Monighan]

After years of searching I picked this little gem up this week. It took a long time to find just one but now I have two. One for each side of the boom.
These are actual porcelain enamel signs Bucyrus-Erie had on their Bulldozer cable controls from the 1940's - 50's





Here is the other one I have

[Bo Wallen]

SWEET You lucky boy. Now it's Perfected. Looks awesome

[frizzen]

The bucket looks killer with some paint on. Did it help visibilty as much as you hoped?

But those signs are way over the top cool!

[9W Monighan]

Originally Posted by frizzen

The bucket looks killer with some paint on. Did it help visibilty as much as you hoped?

But those signs are way over the top cool!

The red bucket was much more easier to see. Shows up better in pictures too.

[Finster]

The model is pure awesomeness in itself, but the signs and red bucket really do add something. Nice touches.

[TylerDSAudi]

Haven't looked at this thread in awhile and wow great work! I wish I had that good of a detailed bucket for my dragline build!

Question what are your motors running rpm wise, im trying to size my motors for my Marion 8750 and having a hard time figuring that out on speed and torque needed. Thanks!

[9W Monighan]

Originally Posted by TylerDSAudi

Question what are your motors running rpm wise, im trying to size my motors for my Marion 8750 and having a hard time figuring that out on speed and torque needed. Thanks!

I used the technical data from my machine's spec sheet to get the feet per minute from each function.
My motors are:
Swing-2500rpm 1/17hp 130vdc
Drag- 500rpm 1/12hp 130vdc
Hoist 417rpm 1/29hp 130vdc
They are geared down to approx scale feet per minute through the gearing. The drag is too fast so I have the max rpm turned down.Someday I want to build the gearbox for the drag correctly using all the gears exactly like the 1:1 machine.
I can also change my speed by changing the stick travel with the limits on the DX7 transmitter.

[9W Monighan]

It has been very hard to find any time to focus on this due to being busy at work all the time.So I found some time to do a little work on my 9W before Cabin Fever. Since it was very hard to see last year at the show I painted the bucket last summer and I added some lighting to my boom. I bought these bolt LED's and turned them down to fit inside of some old Lionel flood light housings.



Turning down from 11mm to about .360" dia




3 Lights installed

[9W Monighan]

Well I found a little time to break out my model again and get to some more parts that need made. I decided to make some roof trusses and get some cover on this thing.

I made a simple fixture to machine the "T" bars since you can't buy the size I need.



A little scrounging around and came up with a cutter stack to mill these with a .040" web and flange.


Four cuts to depth and they turned out nice. Bigger cuts caused some problems.



A few ready for next step