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Pro tip: I switched from a 3-part to a 4-part line for my tower crane and the difference is huge
For a long time, I used a standard 3-part hoist line on my tower crane for general lifting. Last month on a job in Denver, we had to set some very heavy precast panels. The lead guy on site, who's been running cranes for 40 years, told me to try a 4-part line setup for that specific lift. The line pull was way lower, maybe 25% less, and the whole thing felt smoother and more controlled. It took an extra 15 minutes to re-rig, but the precision was worth it for that tricky placement. Now I think about line parts for every heavy or delicate pick. Has anyone else found a specific rigging change that made a common lift much better?
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blairh967mo ago
Interesting. So when you switched to the 4-part, did you have to change your boom angle or the crane's setup at all to make up for the extra line, or was it just a straight swap on the reeving?
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anthony_campbell887mo ago
Come on, it's just an extra pulley. It's not like you reinvented the wheel, it's basic rigging math. The real trick is not getting lazy and using it for every single pick when you don't need to.
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