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(Mother Nature Network)   The more the media talks about the potential risks of zip lines, the more popular zip lines become. "Kits are available online for as little as $200"   (mnn.com) divider line 9
    More: Obvious, zip line  
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3543 clicks; posted to Main » on 03 Jul 2012 at 1:01 PM (2 years ago)   |  Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»



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2012-07-03 01:49:15 PM  
1 votes:
Copeland fell into the Tallapoosa River on May 1 after a homemade zip line broke. She suffered a deep gash in her leg which became infected with the bacteria Aeromonas hydrophila, which recent tests showed are at "normal" levels in the river. Copeland went to the hospital several times complaining of pain before she was diagnosed with necrotizing fasciitis. By that point, it had spread throughout her body and she came close to death several times.

I see a lot of fail when it comes to a contaminated river, and poor diagnostic efforts by a medical staff. But hey, let's blame a broken zip line.
2012-07-03 01:31:35 PM  
1 votes:

unlikely: If a zip line costs you $200 you fail on a fundamental level. A quick visit to Lowes.com says a 4" hay fork pulley is $17. Half inch maypole rope (presumably you're leaving it outdoors) is about 70¢ a foot. A tiedown rachet rated to 900 pounds costs $20.

So unless you completely fail at "how to make shiat myself" a zip line shouldn't cost more than $40 plus rope - say 50 feet for another $35 if you're building a kind of long one.

What remains is to figure out where to put it and make the angle enough that you go fast enough that it's not boring.

/I imagine a bicycle helmet is probably a good idea too...


Also the load on the bearings is pretty extreme, vastly more speed than a hay fork pulley was made for. But, if the bearings fail, they'll seize, which will just mean it drags to a stop. The proper cable rating and proper cable terminations is more critical, since that's what actually results in you falling to the ground at high speed.
2012-07-03 01:24:42 PM  
1 votes:

The Larch: unlikely: So unless you completely fail at "how to make shiat myself" a zip line shouldn't cost more than $40 plus rope - say 50 feet for another $35 if you're building a kind of long one.

You might want to crack out a ruler and figure out how long 50 feet is. I'm guessing that most people want zip lines that are longer than the walk from their kitchen to their dining room.


You also might wanna calculate the tensile load involved in keeping the rope reasonably taut with say a 200lb rider, which is MUCH MUCH more than 200lbs. Especially given the dynamic loading.
2012-07-03 01:11:22 PM  
1 votes:

vpb: Those are the kind that give you nekkidizing facists.


dot tumblr dot com.
2012-07-03 01:09:39 PM  
1 votes:

unlikely: If a zip line costs you $200 you fail on a fundamental level. A quick visit to Lowes.com says a 4" hay fork pulley is $17. Half inch maypole rope (presumably you're leaving it outdoors) is about 70¢ a foot. A tiedown rachet rated to 900 pounds costs $20.

So unless you completely fail at "how to make shiat myself" a zip line shouldn't cost more than $40 plus rope - say 50 feet for another $35 if you're building a kind of long one.

What remains is to figure out where to put it and make the angle enough that you go fast enough that it's not boring.

/I imagine a bicycle helmet is probably a good idea too...


This is what we did when I was a kid, minus the bike helmet. We also used a metal cable instead of rope. Connected at the start to a single tree, ending attached to another cable stretched between two other trees. We also used a trapeze bar instead of a harness. No one ever came close to getting hurt. We'd just give the pulley or cable a good spray with silicone lube every once in a while.
2012-07-03 01:08:04 PM  
1 votes:
Failing to see the big deal. These things existed 40 years ago anyway, because a buddy of mine had a wire strung between two trees on a slope. You hung onto the handle and slid on down. Wheee.
2012-07-03 01:07:13 PM  
1 votes:

unlikely: So unless you completely fail at "how to make shiat myself" a zip line shouldn't cost more than $40 plus rope - say 50 feet for another $35 if you're building a kind of long one.


You might want to crack out a ruler and figure out how long 50 feet is. I'm guessing that most people want zip lines that are longer than the walk from their kitchen to their dining room.
2012-07-03 11:26:26 AM  
1 votes:
The more the media talks about the potential risks of zip lines, the more popular zip lines become. "Kits are available online for as little as $200"

And believe me, marketers are totally in the dark on that. God save us when they realize the correlation.
2012-07-03 10:46:20 AM  
1 votes:
Remember kids: EVERYTHING will kill you. Just give up and stay inside. And order take out.
 
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