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slacklinejoe
Feb 14, 2004, 3:29 AM
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Registered: Nov 5, 2003
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I was just wondering if anyone had ever tried using rappelling rings in a primitive slackline setup instead of carabiners? Mine weren't actual rap rings, but similar industrial steel rings from saftey harnesses and it seemed to work just fine and the rings were a lot less expensive than carabiners. I do believe the smaller curve diameter increased friction a bit, but for shorter/looser setups it wouldn't really be an issue.
Just out of curiosity when I was doing some workbench testing I made a primtive using some 5/8" tubular nylon and rings and the overall weight and space reduction was pretty noticable, and it packed up tiny.
I thought the idea might be useful to someone else out there wanting to save weight and cost.
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jer
Feb 14, 2004, 4:46 AM
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ethos has a model that uses rap rings.
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therealbovine
Feb 20, 2004, 9:25 PM
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A note from ethos:
The "rolled aluminum" style rap rings from SMC are NOT strong enough to use in a slackline rig. They deform, and become unsafe in as little as one use, as we tested these rings long ago on a few prototypes.
If you decide to try using rap rings in your slackline rig, which is not an easy task with tied lines (feeding your tension rig or tying webbing through the rings is more time consuming and frustrating than just clipping a carabiner), we recommend the 30+kn steel rings manufactured by Fixe and NOT the aluminum OR hardware store versions that other slackline companies use.
Best of luck!
s e a n @ e t h o s c l i m b i n g . c o m
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slacklinejoe
Feb 20, 2004, 9:37 PM
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In reply to: A note from ethos: The "rolled aluminum" style rap rings from SMC are NOT strong enough to use in a slackline rig.
Agreed, you double them for a rappel for a reason. The industrial safety rigging ones we were playing with were 20KN+ if I remember right, but I'd have to check.
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rrrADAM
Feb 20, 2004, 9:50 PM
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Registered: Dec 19, 1999
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You would also have to thread the line through the ring from the end, and pull all the slack through instead opf just clipping it where needed... Think putting someone on belay by threading the line through the ATC and locker and having to pull all the slack through. :idea:
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