1/16 Bucyrus-Monighan Walking Dragline

[9W Monighan]

I finally got the boom hoist attached to the machinery deck and was able to boom up under power for the first time.
The motor I used had no problem raising it. We timed it today and it takes about 15minutes to get up to 25 degrees.
Tiny 0-80 set screws

I wish I would have had a sharper endmill when I made the hoist,My new camera picks up all the bad details

A full drum of cable.


While getting the drag ready for Sunday I decided to drill and tap the drag jaw clutch bolts. When I'm pulling in hard it would slip because it was only pressed in. Now we'll have to watch we don't pull too hard digging because the only weak point is the motor coupling. Or it may just drag the whole machine into the pit
Complete load unit. And walking pinion.


Tapered lock bushing I made to lock the gear to the shaft.


Exploded view


Bearings