1/16 Bucyrus-Monighan Walking Dragline

[9W Monighan]

Originally Posted by Jared

That's gonna be cool! Two questions: what is the third lever on the far left for? Propel? And is the doohickey on the back of the left console a compass? I can see where a compass could be handy to make sure you walk in the desired direction since you're facing the wrong way. Point the machine where you want to go, take a reading and then swing 180 degrees from that.

Yes. The third lever is for propel. On the Marion machine this came from, the walking function was on separate gearing electrically connected to keep them timed together, different than my Monighan style machine. The two cams on the Marion are separate with no shaft thru the width of the machine.
The box with the dial is an indicator for the walking cams showing the position 0-360 deg. so the operator knows when they are at top dead center so the machine is clear to swing.
There is also a bell mounted to the right hand console not seen in the picture that will ring when the hoist lines are near the point sheave. Very important while digging at night dusty or foggy conditions when he can't see the top of the boom.