# Kilo Newton to Pounds Conversion

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• 02-03-2007, 12:48
Coffee
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.
• 02-03-2007, 12:53
Just Jeff
Google confirms: "1 kilonewton = 224.808943 pounds force"

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.
• 02-03-2007, 12:54
blackbishop351
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!
• 02-03-2007, 15:19
slowhike
that's handy to know teedee.
i have a biner (two actualy) from the climbing section that's rated 8kn & weighs 1.5 ozs.
• 02-03-2007, 21:34
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

• 02-04-2007, 03:23
Coffee
Thanks, I'll have to remember that about google. From some reason I am always have to convert units for one reason or another.
• 02-04-2007, 03:57
blackbishop351
BGT has a pretty nice conversion page, too:

http://www.backpackgeartest.org/convert.html
• 02-04-2007, 06:17
Just Jeff
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.
• 02-04-2007, 06:26
slowhike
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?
• 02-04-2007, 06:34
Just Jeff
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 :D )
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