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post #37 of Old 05-08-2019
pdqaltair
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Re: Jack Lines

Quote:
Originally Posted by SanderO View Post
...Stretch? I how much stretch will a 25' line loaded when a person is tossed by a wave? Another nonsense concept. Actually a little shock absorption is not a bad ....
In testing, as much as 2 feet (PS Magazine). Or you could place a 25' section between two trees, without pretension, and step onto it. The static load will be on the order of 500 pounds and it will sag about 2 feet, depending on the product. Certainly body weight is reasonable. Try it. I have. Any slackliner or tight rope walker know of this. and look how many sailors, like ColeMj, have simply noticed it. Any engineer can check my math; it's high school physics and trig. Nothing complex in the static case.

Why belittle a concept you have not studied and have no personal knowledge of? You can test this for yourself.

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