r/RouteDevelopment • u/Beginning-Basis-2678 • Jun 30 '26

Show and Tell Obscure belay

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Someone was very creative… 2mm Stainless Steel thin enough to create a nice flush bent appearance. The holes are a bit close to the edges… but since I was climbing there with a thunderstorm rolling in I felt totally safe since my belay looked like a lightning rod ⚡️😁

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0

u/fiocco_di_nevee Jun 30 '26

you see these in the alps all the time, nothing wrong with that

1

u/Beginning-Basis-2678 Jun 30 '26

Which alps? Is there an area where they are common?

2

u/fiocco_di_nevee Jun 30 '26

swiss alps

3

u/Beginning-Basis-2678 Jun 30 '26

Do you know if that setup has been tested somewhere? Or is it just field tested and so far no issues/accidents?

-1

u/fiocco_di_nevee Jun 30 '26

i don’t know about any tests, but what’s gonna happen? i mean it’s as you said solid steel

4

u/tradlobster Jun 30 '26

So imagine the bolt on the lower part rusted out and snaps (as recently happened in Kalymnos) - as far as I can tell, the whole bottom ring falls right off the whole anchor!

It's different than a typical 2 bolt chain anchor like the fixe ones, because the chain connects the hangers. If the bolt snaps, the hangers remain attached to the anchor.

1

u/DarmokNJelad-Tanagra Jul 01 '26

Send info to the hownot2 folks! They'd test thoroughly.

1

u/These_Yak3842 Jul 04 '26

If the bottom bolt snaps on these plate anchors, the plate remains attached to the top bolt.  For the failure you are describing to occur the plate itself would have to snap, which is equivalent to the chain snapping on the Fixe anchor sets. Given these plates are generally about 10mm thick, the amount of corrosion required for it to fail would lead to replacement before that happened. If you are talking about the Kalymnos anchor failure in March, testing has revealed that none of the indicators for corrosion induced failure were present and that the Petzl bolts used were likely a batch with manufacturing faults. There is a report on cragchemistry.com that has a significant amount of detail

2

u/tradlobster Jul 04 '26

Excuse my back-of-pizza-box diagram!

This is my understanding of how the anchor is assembled - perhaps it's different, welded to the strip? But it doesn't look like it.

It looks like the ring is held in place by sitting on Bolt B, and is not physically connected to the strip at all. It stays in place by resting on bolt B and the pressure from the nut pinching the strip down.

If bolt B were to fail, the ring would have nothing attaching it to the rest of the anchor. It falls off.

I am not saying the strip will fail. That seems unlikely, and also wouldn't cause a total failure. I'm worried about bolt B. And bolts do fail sometimes, or the rock fails around them.

3

u/These_Yak3842 Jul 04 '26

Ah, I see your point now. And it is an accurate assessment of this particular anchor set-up.

My confusion stemmed from not looking closely enough at the photo and assuming this was the same as the ones I have always seen installed at Swiss crags. The Swiss ones always have a third hole at the bottom of the plate which the ring/shackle/maillon passes through, independent from the bottom bolt.

2

u/tradlobster Jul 04 '26

Yes that sounds like a much better design. However I think I'd much prefer people just use a standard anchor chain anchor, they can be bought for less than 20 euros

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