Was asked to post this here
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Trying not to post a click-baity title since the situation is different from the other recent Alien failure but I was asked to post this to MP. |
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Small gear fails. 90 deg in a vertical crack would not be ideal orientation. |
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I guess that is why every manufacturer tells us to anticipate the direction of the fall and place the cam stem in that direction. I don't think it is the manufacturers fault. I same thing happens to old rigid stem friends in a horizontal crack. |
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Brassmonkey wrote:Wow, thats a scary looking failure!! Little to no lobe deformation to show excessive forces were placed on the cam that should/could create a failure like that. Scary. Glad I don't own any. The strength rating is 5KN, is that right? I would change the title to something not click-baity, but more honest to what this is. "New Fixe Alien LITE Failure" isn't off base because that's what it actually is to me.Title would be more accurate if it said "I broke my cam because of a poor placement". 1) Tiny cams are not that strong and have very small margins of error. 2) Sticking straight out is a sure way to break the cam, regardless off rated strength. Bad Placement - 90deg another brand. Think of a #2 pencil. If you try to pull it apart axially it will be damn near impossible. Bend that #2 over an edge though and it breaks easily. All cam strength ratings are under ideal, in-line loading test scenarios. All bets are off when you start loading them in ways that introduce torque at the head. 3) Small cams are simply more fragile pro and should be treated as such. All these "X small cam failure" threads are nearly all pilot error. [not sure on the latest yellow Alien but...] |
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Asked by whom? |
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I'm rather impressed it didn't rip out first, given the angle it was placed at. |
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It's not ideal as a placement but damn I do that shit with other cams and they don't break. Something ain't right. Fixe needs to get they're shit together or just call their shit shit. I've warped the hell out of a BD cam placed in a pocket with that orientation. Was not a small fall and the cam didn't break. Had small falls on WC zeros in what sounds like similar orientation and they never broke either. So I don't think the dudes placement is the blame. |
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mattm wrote: Title would be more accurate if it said "I broke my cam because of a poor placement".This. |
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Curious. Did this cam actually hold your fall or did it pull? If it held your fall, then it succeed in its job. I also notice the trigger wires are still intact. That last picture is the best as it most likely really shows the angle of application. |
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^^^^^^^^ |
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another brand.
This image is from the user manual for the Totem Basic. The Basics use the same design as the CCH/Fixe Aliens From the user guide: Do not use the Basic cam in shallow cracks, where the Basic cam body can not be properly aligned with the expected load (see figure 5). The strength is lower in this situation, and also the device could slip out. |
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Popcorn anyone? |
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Hey Locker, If you're a cool old guy like we are then of course..you can evaluate based on years of climbing experience. |
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JulianG wrote: You could't place a nut? or better pink tricam that makes certain people happyPink tricam is rattley fingers. Black alien is a micro cam. He needed a nut. |
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Responding to a few comments. JulianG wrote:You could't place a nut? or better pink tricam that makes certain people happyNo, it was a strenuous stem with poor visibility into the crack. A nut would have taken too long. mattm wrote: Title would be more accurate if it said "I broke my cam because of a poor placement".Sure Muscrat wrote:Asked by whom?A few people on Reddit, I figured it might generate a good discussion on placement of cams, especially small ones. MuddyPaws wrote: How much rope did you have out and how far above the last piece were you? Also, doesn't sound like you decked, so despite breaking the head of the stem, the cam held you.It was maybe a little below my waist when I fell. I didnt exactly deck, but landed on my feet. My belayer did an awesome job. grega wrote:Curious. Did this cam actually hold your fall or did it pull?It pulled, which is more or less what I expected to happen if I fell, which I wasnt intending to do. Something about mental duct-tap. The thing that was more surprising to me was the fact that it snapped. Consensus seems to be that I should have expected that. |
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Brassmonkey wrote:I'll say it again, show me pics of other cams that have failed this way, not x4's. Start whipping all over small gear and you'll come to learn what they should be able to hold, even in marginal placements. And bearbreeder has a weird thing against all "microcams" so I take little stock his thoughts on this subject.I'm with Brassmonkey on this one. I think we can all agree it was a bad placement. That said, though, does anyone have any actual evidence of non-Alien small cams failing in similar placements? |
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wfscot wrote: I'm with Brassmonkey on this one. I think we can all agree it was a bad placement. That said, though, does anyone have any actual evidence of non-Alien small cams failing in similar placements?What about all the Aliens that have held falls while being placed in a way that is completely wrong. So wrong that all manufacturers advise against it. |
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While I get the poor placement, a fall with this piece just below the waist seems surprising small to have this effect. |
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Morgan Patterson wrote:and the metal stem snapped exactly where the rounded part meets metal tube part and where the wire ended.That is where it suppose to break, at the weakest link. Paper breaks on the perforate line for the same reason or a wish bone. I don't know the metal they used but they use different metal could reinforce it(make it bigger) |
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Mike Brady wrote: What about all the Aliens that have held falls while being placed in a way that is completely wrong. So wrong that all manufacturers advise against it.So we're supposed to be stoked that a bunch of them didn't break? This was covered on the other broken Alien thread, but cams from the other manufacturers, while mangled, don't seem to suffer this kind of catastrophic failure. There is a massive difference between kinked cables or deformed lobes and full on separation. I think it's missing the point entirely to simply say "oh well, bad placement" and move on. |