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Abseil ring thickness

Original Post
Alex Shaw · · Unknown Hometown · Joined Aug 2023 · Points: 0

What's the consensus on stainless steel rap ring thickness? 25/64 or 10mm seems to be the most common but what about 5/16? Strength does n't seem to be a problem but if it's a well made ring then what issues would users have if they were installed?
Cheers

Jim Titt · · Germany · Joined Nov 2009 · Points: 490

They wear out faster, it is harder to pull the rope down and they wear the rope faster.

Alex Shaw · · Unknown Hometown · Joined Aug 2023 · Points: 0

Cheers Jim

Guess it's the tighter arc on the ring that makes the difference? 

I F · · Megalopolis Adjacent · Joined Mar 2017 · Points: 4,368
Alex Shaw wrote:

Cheers Jim

Guess it's the tighter arc on the ring that makes the difference? 

...also known as the bend radius.

DrRockso RRG · · Red River Gorge, KY · Joined Sep 2013 · Points: 860

Besides what Jim said, there's very little price difference between 3/8" and 5/16" stainless steel rod stock,  and thus the cost difference in the final product would not be much different. So I guess the question is what benefit do you hope to accommoplish with 5/16" rings? As an alpine anchor that only gets rappelled on they would work fine, a manufacturer would have no problem reaching atleast a 22kn/5000lbs mbs. 

Alex Shaw · · Unknown Hometown · Joined Aug 2023 · Points: 0
DrRockso RRG wrote:

Besides what Jim said, there's very little price difference between 3/8" and 5/16" stainless steel rod stock,  and thus the cost difference in the final product would not be much different. So I guess the question is what benefit do you hope to accommoplish with 5/16" rings? As an alpine anchor that only gets rappelled on they would work fine, a manufacturer would have no problem reaching atleast a 22kn/5000lbs mbs. 

Thanks. Yes strength is fine but the cost is actually double which is why I'm asking.

Answer would seem to be fine for remote, light traffic but for use on a routine sport crag then thicker material is the way to go.

DrRockso RRG · · Red River Gorge, KY · Joined Sep 2013 · Points: 860

The difference in material cost at my supplier is only about 10% between the differently sized material. What are the sources you're comparing? I've been using these for 10mm rings recently and they're pretty nice at a reasonable price. 

https://verticallstore.com/products/grandwall-stainless-steel-rap-ring

I would agree with your assessment.  

Jim Titt · · Germany · Joined Nov 2009 · Points: 490

The difference in weight from an 8mm ring to a 10mm ring is 62% so that is the extra material cost. The larger diameter is slightly cheaper but the welding costs more so roughly equal out.

Guideline #1: Don't be a jerk.

Fixed Hardware: Bolts & Anchors
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