A 20-year operator told me to stop leveling with the bubble, I resisted for a month

I always set my lattice boom using the built in level, checking it every lift. Last month a guy who's been running cranes since the 80s watched me on a job in Fort Worth and said my loads were swinging more than they should. He pointed out the bubble can lag on older machines and told me to watch the boom angle indicator and feel the load line tension instead. I tried his way on a 12-ton pick that afternoon and the difference was instant, no drift on the swing. Now I only use the level for the initial setup and trust the angle gauge from there. Anyone else ditch the bubble for good on an older crane?

2 comments

2 Comments

the_xena1mo ago

Isn't it funny how we get hooked on one way of doing things just because it's what we were shown first? I mean, I was the same way for years, dead set on that bubble level no matter what. But after hearing your story, it makes total sense why the angle gauge and feel would work better on an older rig, the level just can't keep up. I never really thought about the bubble lagging, maybe that's why some of my picks felt a little off too. I'm honestly glad you posted this, it's got me rethinking my own setup before my next job.

the_xena1mo ago

okay but hold on, I gotta disagree with you a little here. I get that the old timer has mad experience and the bubble can lag, but throwing out the thing that actually tells you if the boom is level flat out just feels risky to me. Feeling the line is a skill you build, and for a rookie who doesn't have that instinct yet, the level is still the safety net. I'd say use the angle gauge to double check for sure, but don't just abandon the bubble completely, especially not on a pick where a few degrees can mean the difference between smooth and sketchy. Maybe I'm old school too, but I trust the tool that gives me a direct reading over a person's gut feeling, no matter how good they are.