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Author Topic: Dacron line life expectancy  (Read 2548 times)
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TroutBum
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« on: July 26, 2018, 05:01 PM »

Some of my kite lines (Dacron) are over 15 years old. They seem fine, but is there a useful life to Dacron?
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makatakam
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« Reply #1 on: September 05, 2018, 10:29 AM »

Think of it as you would think of fishing line. Its useful life depends on exposure to the things that will degrade it. Zero exposure, as in a temperature-controlled vacuum in darkness, will allow it to last indefinitely, but frequent or constant exposure to light, air, abrasion and temperature fluctuations and extremes will accelerate that degradation.

So, pretty much, if you keep it stored properly it will last longer than if you use all the time or leave it exposed to the elements.
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MARK

"...it's a fair wind blowin' warm, out of the south over my shoulder, guess I'll set a course and go." CSN&Y
thief
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« Reply #2 on: September 05, 2018, 10:41 AM »

remember, if this applies to you, that salt water can also do unseen damage to line if left wet and not rinsed off...the salt crystals can be sort of abrasive along with sand
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makatakam
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« Reply #3 on: September 06, 2018, 09:04 AM »

remember, if this applies to you, that salt water can also do unseen damage to line if left wet and not rinsed off...the salt crystals can be sort of abrasive along with sand

And this is true even if it doesn't apply to you.
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MARK

"...it's a fair wind blowin' warm, out of the south over my shoulder, guess I'll set a course and go." CSN&Y
Fly Market
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« Reply #4 on: September 06, 2018, 12:38 PM »

I tend to inspect my line as I use it. Letting it out or winding it in, I'm looking for knots, broken fibers, nicks, or anything that doesn't feel right to my fingers. I often fly on sand, or on fields with sticks and burrs and assorted junk, all of which degrades the line. There's no rule for knowing when the line is near death, but a basic "run through the fingers" lets me find problems before the line breaks. Usually.
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tcope
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« Reply #5 on: September 06, 2018, 01:09 PM »

I've read comments about people with 20 year old Dacron sails on their boats that are still good. These would be exposed to much more UV and salt then kite line. Personally, I'd fly with them until they showed physical damage. You could also spray the line with something like 303 Aerospace Protectant to add UV protection.
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Todd Copeland
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