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Got schooled on a 30-year-old Otis unit in a Boston hospital last month
The governor rope was fraying in a way I'd never seen, almost like a slow twist. An old timer on site showed me his trick of marking the drum with chalk before a full pull. Anyone have a different way to check for that kind of hidden wear before it gets bad?
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nancy_davis752mo ago
That chalk trick is smart for seeing drum movement. When you say a slow twist, was the fray even along the whole rope or did it look worse in one section? I'm wondering if a bad sheave could cause that specific wear pattern over decades.
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thomas1052mo ago
Oh man, asking me to remember details is a dangerous game! The fray was definitely worse on one side, like a two-foot section that looked chewed up. My memory's about as reliable as that old sheave, but yeah, a bad groove could totally dig in like that over time.
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ramirez.sage27d ago
Bet on it being the sheave, @thomas105. Old rope wear patterns are like a bad mystery - always pointed at the groove. Maybe it's just me, but I bet that chewed up section lines right up with a flat spot on the sheave.
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