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Forum: Deck hardware: Rigging, Sails & Hoisting 14-11-2021, 17:42
Replies: 62
Views: 19,298
Posted By Benz
Re: Another dyneema line failure

Some rope companies are making tier-two lines using dyneema/polyethylene or olefin blends for the cores, or using a lesser SK number of dyneema (there's at least five flavors in play right now from...
Forum: Deck hardware: Rigging, Sails & Hoisting 09-01-2021, 03:32
Replies: 62
Views: 19,298
Posted By Benz
Re: Another dyneema line failure

^^The stiffness is not necessarily UV damage, but simply a by-product of having a rope set up under tension for a long time. Dust and salt get into the cover and stiffen it up, and it simply gets...
Forum: Deck hardware: Rigging, Sails & Hoisting 05-01-2021, 03:36
Replies: 62
Views: 19,298
Posted By Benz
Re: Another dyneema line failure

These are deeper waters than I can sound, not being an engineer, but chafe seems counterintuitive since there's no sawing motion. I thought it was that a sharp bend causes weakness because the force...
Forum: Deck hardware: Rigging, Sails & Hoisting 04-01-2021, 16:19
Replies: 62
Views: 19,298
Posted By Benz
Re: Another dyneema line failure

The failure of un-tapered splices is not from chafe, I thought, but because it creates a stress riser that greatly weakens the line. Any line will suffer similarly from stress risers, but I...
Forum: Deck hardware: Rigging, Sails & Hoisting 03-01-2021, 11:52
Replies: 62
Views: 19,298
Posted By Benz
Re: Another dyneema line failure

I do a lot of work in a rigging shop, and have never seen a failure due to UV alone. The failure mode is almost always chafe.
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