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  1. #1
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    Kilo Newton to Pounds Conversion

    I thought this would be helpful for people ordering climbing gear for use in hammocking. Most of the rating is given in KiloNewtons (kN). I called Mountain Gear and was given a conversion rating of:

    1 kN = 224.8 pounds of tencile strength.

    I haven't found a place to double check this number, but it seems right. Add in the usual desclaimer here.
    Is that too much to ask? Girls with frikkin' lasers on their heads?
    The hanger formly known as "hammock engineer".

  2. #2
    Senior Member Just Jeff's Avatar
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    Google confirms: "1 kilonewton = 224.808943 pounds force"
    http://www.google.com/search?hl=en&q=1+kN+to+lbs

    So a 25 kN biner is good to ~5620 lbs.

    A 5 kN biner is good to ~1124 lbs...nearing the lower limit for hammock use.
    “Republics are created by the virtue, public spirit, and intelligence of the citizens. They fall when the wise are banished from the public councils because they dare to be honest, and the profligate are rewarded because they flatter the people, in order to betray them.” ~Judge Joseph Story

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  3. #3
    Senior Member blackbishop351's Avatar
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    According to the conversion table in my general physics book (haven't opened this guy in a while!):

    Giancoli, "Physics for Scientists and Engineers, with Modern Physics" Prentice-Hall, 2000

    the conversion is

    1lb. = 4.45 N

    which gives

    1 kN ~ 224.72 lbs.

    Pretty close!
    "Physics is the only true science. All else is stamp collecting." - J. J. Thompson

  4. #4
    slowhike's Avatar
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    that's handy to know teedee.
    i have a biner (two actualy) from the climbing section that's rated 8kn & weighs 1.5 ozs.
    don`t leave the CREATOR out of the creation!

  5. #5
    Senior Member Perkolady's Avatar
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    Here's a site where you just add in the numbers you're thinking about and it gives you the conversions in a matter of a click...

    http://www.pitt.edu/~rsup/forceconv.html

    Perkolady

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    Thanks, I'll have to remember that about google. From some reason I am always have to convert units for one reason or another.
    Is that too much to ask? Girls with frikkin' lasers on their heads?
    The hanger formly known as "hammock engineer".

  7. #7
    Senior Member blackbishop351's Avatar
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    BGT has a pretty nice conversion page, too:

    http://www.backpackgeartest.org/convert.html
    "Physics is the only true science. All else is stamp collecting." - J. J. Thompson

  8. #8
    Senior Member Just Jeff's Avatar
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    Tim - biners are rated across the long axis and the short axis, and rated with the gate open and closed. If your biner is rated to 8kN across the long axis with the gate closed, be sure it's used that way. If it's pushing against the tree or something that changes how it holds the force, or if something is holding the gate open, it'll significantly lower the rating.
    “Republics are created by the virtue, public spirit, and intelligence of the citizens. They fall when the wise are banished from the public councils because they dare to be honest, and the profligate are rewarded because they flatter the people, in order to betray them.” ~Judge Joseph Story

    - My site: http://www.tothewoods.net/
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    IMPOSSIBLE JUST TAKES LONGER

  9. #9
    slowhike's Avatar
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    that's good to be aware of.
    when i use it though, i do use it on the long axis w/ the gate closed. and i don't use it against the tree, just between two strait lines.
    i'm not sure i understand that short axis part. does that mean someone would be using it sideways, w/ gear hanging on the wire gate?
    Last edited by slowhike; 02-04-2007 at 06:30.
    don`t leave the CREATOR out of the creation!

  10. #10
    Senior Member Just Jeff's Avatar
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    I'm not sure how they test it, but I assume you're correct. Like if it got spun around during climbing or something, maybe? Or maybe it's just a liability thing since people are risking their lives with the gear...never know how many idiots are out there using things in ways they weren't designed for! (Like hammockers )
    “Republics are created by the virtue, public spirit, and intelligence of the citizens. They fall when the wise are banished from the public councils because they dare to be honest, and the profligate are rewarded because they flatter the people, in order to betray them.” ~Judge Joseph Story

    - My site: http://www.tothewoods.net/
    - Designer, Jeff's Gear Hammock / Pack Cover by JRB

    IMPOSSIBLE JUST TAKES LONGER

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