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I was checking a governor rope for a year before I saw the twist pattern

I always just looked for fraying and felt the tension, but last Tuesday in a 12-story building I noticed the rope had a slight left-hand twist I never paid attention to. The old head mechanic pointed out that the twist can show wear from the sheave long before the strands go. How many of you actually check the rope twist on your regular checks?
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3 Comments
val_sullivan4
Well, better late than never, I guess.
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garcia.logan
You just taught me something I should have been looking for, thanks.
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nelson.gavin
Our shop has run the same Otis elevators for fifteen years and we've never logged a twist pattern. We look for core shots and broken wires, the stuff that actually fails. Garcia.logan might find it useful, but I've seen ropes with a perfect twist snap from internal corrosion you'd never spot that way. Feels like looking for a specific crack in the pavement when the whole road is sinking.
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