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#3204324 - 03/26/13 11:09 AM Re: World's largest rope swing... [Re: jb3]
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Mud Dauber
16 Point


Registered: 07/28/10
Posts: 12881
Loc: Tennessee

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You have to account for rope stretch with climbing ropes. Usually, the rope will have the most elasticity on the initial falls and then stretch out a bit to very predictable lengths. If you are going to set a intentional jump like that, it is wise to start with some very conservative jumps and then adjust the rope to the desired lengths.

I'm guessing that the person who did this setup was lacking in experience with such matters and probably did not account for rope stretch, or at least the appropriate amount of stretch induced in such a fall, and the jumper died as a result of the rope elasticity.
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#3204332 - 03/26/13 11:10 AM Re: World's largest rope swing... [Re: DntBrnDPig]
44fanatic
12 Point


Registered: 01/01/08
Posts: 6126
Loc: Clarksville, Montgomery Cnty

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I just watched some of the youtube video's. I am scared of heights and just watching made my stomach queasy.
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#3204345 - 03/26/13 11:23 AM Re: World's largest rope swing... [Re: Poser]
TAFKAP
14 Point


Registered: 11/06/09
Posts: 9543
Loc: Memphis

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 Originally Posted By: Poser
You have to account for rope stretch with climbing ropes. Usually, the rope will have the most elasticity on the initial falls and then stretch out a bit to very predictable lengths. If you are going to set a intentional jump like that, it is wise to start with some very conservative jumps and then adjust the rope to the desired lengths.

I'm guessing that the person who did this setup was lacking in experience with such matters and probably did not account for rope stretch, or at least the appropriate amount of stretch induced in such a fall, and the jumper died as a result of the rope elasticity.


Nylon, polypropylene, and other blended ropes exhibit EXTREME elasticity. At work, we can often get as much as 100% stretch at only about 10% of its breaking load. Trying to obtain a break value is nearly impossible on some materials (namely nylon), because our test cylinders run out of stroke before we can even get close. I work with this stuff on a daily basis, and it's still surprising how much stretch there is in it.
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#3204411 - 03/26/13 12:17 PM Re: World's largest rope swing... [Re: jb3]
jos3ywales
14 Point


Registered: 10/02/09
Posts: 7518
Loc: Norris Dam

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http://www.youtube.com/watch?v=4B36Lr0Unp4

This is the place
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#3204999 - 03/26/13 09:09 PM Re: World's largest rope swing... [Re: jos3ywales]
BigAl
16 Point


Registered: 07/31/01
Posts: 19093
Loc: Fayette County, TN US

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The guy that posted the most popular video has some really cool video of folks doing some other crazy things.
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#3205026 - 03/26/13 09:35 PM Re: World's largest rope swing... [Re: BigAl]
Poser
Mud Dauber
16 Point


Registered: 07/28/10
Posts: 12881
Loc: Tennessee

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did y'all watch the dogs in slow motion?

http://www.youtube.com/watch?v=7ZIjkvdz4Ko&list=PL55F8711DC8CFEA13&index=30
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Wild & crazy, can't be stopped. Only the strong will survive.

Keep your knife sharp and your skillet greasy.

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