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Used gear failures?

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By Bryan Duxbury
Oct 11, 2009

A lot of people I've climbed with have these strong feelings about used gear being super dangerous, yet I don't think I've ever heard a firsthand story about some piece of gear looking OK but turning out to be flawed. Since this site supports a pretty brisk second-hand gear trade, I imagine if this actually happened, someone here would have a personal experience to relate. So, have you had a piece of used gear fail?


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By England
From Colorado Springs, CO
Oct 11, 2009
Alpine toothpick.

About 90% of my gear(hardware only) I've bought used. Never had a problem.


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By Jordan Ramey
From South Pasadena, CA
Oct 11, 2009
What was left of the rack when I topped out on the last pitch of Snake Dike on Half Dome.

I just don't by softgoods (webbing, ropes, etc...) but that's just me. Any softgoods new in the package are probably more than fine. For hardware I wouldn't worry, but give it a thorough inspection. Just think, biners pull tested after being dropped off El Cap broke at their rated strength. For the most part, gear is bomber. It's just forged aluminum. But remember, it's your a$$ so you make the call.

Do you ever lead with a friends rack? Cause that's used gear.


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By Adam B
From Eldorado Springs, CO
Oct 11, 2009

I personally use almost any 2nd hand gear I inspect and consider good. Exceptions are definitely ropes, which are typically the only singular/non redundant peice in the system, and slings. This is a fairly oft posted and responded to sort of thing on MP in regards to mirco fractures in biners, cams, etc. and you could probably do a few searches and find some first hand data on this sort of thing. A machinist buddy of mine told me micro fractures in modern (last 25 years) climbing gear are almost completely mythical. The metals that current camming devices and biners are made from (mostly aluminums and alloys) are those that literally shear once they meet a "breaking point". If there is some sort of bad spot on hardgoods, it should be visible to the eye. Steel on the other hand will deform and warp, hence the reason some solo bigwallers like them for backup biners at the hard points of the harness. Better to forever weld a biner to your harness in a fall than have it shear and break outright.

However, the things that we play with are those that we trust our life to. Cant really put a price tag on that, which is why I totally understand your partners take on the subject. A simple rule like that will definitely always save you from used gear failing and you taking "the plunge". Personal choice in the end really.


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By Peter L K
From Cincinnati, OH
Oct 11, 2009
rrg

I never understand why people state that a cam "has never been fallen on" like it's a selling point.


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By saxfiend
Administrator
From Atlanta, GA
Oct 11, 2009
Relaxing at the P1 belay of Fruit Loops at Rumbling Bald.

England wrote:
About 90% of my gear(hardware only) I've bought used. Never had a problem.

Heh, I bought my whole first rack used (including slings, which I ditched). I have no qualms about used gear that is obviously functional.

The only gear failures I've ever heard of were due to manufacturer's defect (e.g., Aliens).

JL


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By Evan1984
Oct 11, 2009

I have no problems with seconhand hard gear and have never had a problem with it. I only have a few pieces that were seconhand, thouogh, just because I can usually get close to as good of deals on new gear through sales etc.

I wouldn't trust softgear as it is just a little more susceptible to mistreatment/improper storage/age. I'm also really paranoid about my personal ropes.

All in all, I think that used gear is 100% fine. If it wasn't we'd all have to toss our rocks after each outing.


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By Jordan Ramey
From South Pasadena, CA
Oct 11, 2009
What was left of the rack when I topped out on the last pitch of Snake Dike on Half Dome.

posted many times before, but interesting and with PICTURES....

http://www.geir.com/mythbuster.html


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By England
From Colorado Springs, CO
Oct 11, 2009
Alpine toothpick.

Jordan Ramey wrote:
posted many times before, but interesting and with PICTURES.... http://www.geir.com/mythbuster.html


Thanks so much for posting that link Jordan. I really enjoyed that! Especially since I'm an avid fan of the clove hitch, and have had many discussions with climbing partners about their use of the daisy chain.


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By David Houston
From Boulder, Colorado
Oct 11, 2009

I bought quite a bit of used gear when I started out and I haven't had any problems. Especially my old Chouinard ice tools which I bought off the bulletin board at the old Boulder Mountaineer years ago. I would recommend buying used gear from a reputable company like Black Diamond, Petzl, Wild Country or Trango over new, cheap no name knock-offs. The only gear I had trouble with were some Korean-made tcu's called Spider Cams. Two falls; popped out both times. I suspect something was amiss with the cam angle or alloy, who knows.

I agree with others' comments about the soft gear though, harnesses in particular.


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By Adam B
From Eldorado Springs, CO
Oct 12, 2009

The Geir site has some good stuff. The gri-gri mythbust was definitely the most interesting to me. I have heard that the gri gri will finally begin to slip once it reaches a load of 12kn. Hence Dan Osmans (RIP) use of a gri-gri in his rope jump setups as a "piece" that acts much like a screamer. Ive also heard that tests done on screamers found that the ultimate load placed on a piece does not lower when a screamer deploys. Rather, it causes the length of time it takes to reach the ultimate/max load increase, thus decreasing the "shock loading" placed upon the sketchy piece. Anyone know anything about this or have any data to support this? I suspect I read this on MP at one point ...


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By WiledHorse
From NoGo
Oct 12, 2009

Adam B wrote:
Ive also heard that tests done on screamers found that the ultimate load placed on a piece does not lower when a screamer deploys. Rather, it causes the length of time it takes to reach the ultimate/max load increase, thus decreasing the "shock loading" placed upon the sketchy piece. Anyone know anything about this or have any data to support this? I suspect I read this on MP at one point ...

read the Yates site. screamers do indeed lower the peak load. check out this nifty load vs displacement curve

from yates site:
"Screamers will provide added protection in climbing and rescue situations. Screamers not only absorb energy directly because of the stitch ripping effect, they also allow your rope to absorb more energy from the fall by increasing the time interval of the fall. Screamers can reduce shock loading in any rescue system. The standard Screamer can effectively reduce peak loads by 3-4kN in any climbing or rescue system. YATES original Screamers were first developed over ten years ago, YATES has since developed numerous variations on the Screamer design for use in Aerospace, Military and explosive testing for the deceleration of objects. Screamers were originally designed to be used on less than ideal climbing protection such as small nuts, old 1/4" bolts, snow anchors or marginal protection. We have determined that the most effective activation for a standard screamer to be >2kN(550lbf.) for climbing related situations.
"


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By Brian Scoggins
From Laramie, WY
Oct 12, 2009

Adam B wrote:
Ive also heard that tests done on screamers found that the ultimate load placed on a piece does not lower when a screamer deploys. Rather, it causes the length of time it takes to reach the ultimate/max load increase, thus decreasing the "shock loading" placed upon the sketchy piece. Anyone know anything about this or have any data to support this? I suspect I read this on MP at one point ...

The idea is that since most placements have a maximum force load, if you can minimize the maximum force (say by increasing the time over which the energy must be dissipated), the piece is less likely to fail. In a mathematically easier to understand way, consider that energy divided by distance is (to first order) force. So if you increase the distance over which the energy is absorbed, you decrease the average force. That's what the screamer does, and tests support that notion.


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By Adam B
From Eldorado Springs, CO
Oct 12, 2009

Thats exactly what I was looking for. Thanks fellas!


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