I attach my climbing line directly to the bridge on my sequoia (via a biner), with no ring or swivel on the bridge. Any problems with this, other than the biner sliding down to far and loading the bridge in a funny way? And how funny would it be - can I compete in a TCC like that?
biner to bridge
- Thread starter jeff_r
- Start date
- Location
- Chapel Hill, NC
It's OK by me, one less metal to metal link in the chain. For my setup though, it orients the biner wrong and makes it hard to tend my hitch.
- Location
- Retired in Minneapolis
That's been done for a long time. Unless there is some funky orientation issue there shouldn't be a problem.
Some biners will lock up with the rings on the ends of the bridges of harnesses though. This can lead to some sketchy support configurations.
Some biners will lock up with the rings on the ends of the bridges of harnesses though. This can lead to some sketchy support configurations.
- Location
- Chapel Hill, NC
[ QUOTE ]
Some biners will lock up with the rings on the ends of the bridges of harnesses though. This can lead to some sketchy support configurations.
[/ QUOTE ]
Good point. It would be fairly easy to load the nose of the biner on a clevis. Nose hooking is much weaker than even gate loading. I fall tests, nose hooked biners rated at 22Kn+ failed as low as 500#. (Current issue of Rock and Ice)
Binding on a clevis isn't true nose hooking but it would be close.
Some biners will lock up with the rings on the ends of the bridges of harnesses though. This can lead to some sketchy support configurations.
[/ QUOTE ]
Good point. It would be fairly easy to load the nose of the biner on a clevis. Nose hooking is much weaker than even gate loading. I fall tests, nose hooked biners rated at 22Kn+ failed as low as 500#. (Current issue of Rock and Ice)
Binding on a clevis isn't true nose hooking but it would be close.
Tony
Carpal tunnel level member
- Location
- Lancaster, PA
I have been going directly to the bridge with a biner for some time and have no problems. Be sure your friction hitch is held in place with a stopper on one end of the connector. (I use a rubber stopper that fits tightly around the shaft of the biner.) This keeps my knot oriented consistently.
The DMM Ultra O really makes the biggest difference here. I rarely have side loading issues since I started using one!
Tony
The DMM Ultra O really makes the biggest difference here. I rarely have side loading issues since I started using one!
Tony
goodaking
Participating member
What is nose hooking?
- Location
- Victoria, BC
Jeff I put one of these on my seqouia bridge. It is smaller than the orange aluminum bridge connector rings so you don't have to worry about any funny loading. Seems to work alright.
- Location
- Chapel Hill, NC
[ QUOTE ]
What is nose hooking?
[/ QUOTE ]
It's really hard to describe but I'll try. First you have to know that rock climbers use gear with wire cable loops for connection. It can be tiny or up to 1/8" in diameter.
The part of the biner body that flattens out where the gate locks when it closes is the nose.
Some biners use a 'keyhole' closure, Petzl Williams for instance. If you look at it in profile, it's flat and solid, if you turn it 90 degrees it will have sort of a keyhole shape.
Other biners have a recess or notch in that flat part which is evident in profile. Wire gates have to have the notched closure because the recess is where the wire hooks in.
On biners with the recess, a wired stopper(rock gear) can accidentally get caught in the recess. Not only does the gate not close, the load axis goes from the hooked nose to the bottom of the biner where the rope is. If you fall and the stopper holds, the top quarter of the biner will likely break completely.
Clear as mud?
Tree gear doesn't have wire connectors but if a biner binds on a clevis the situation is sort of similar except hopefully the gate is closed. It's not the same but it's a failure mode worth knowing about.
What is nose hooking?
[/ QUOTE ]
It's really hard to describe but I'll try. First you have to know that rock climbers use gear with wire cable loops for connection. It can be tiny or up to 1/8" in diameter.
The part of the biner body that flattens out where the gate locks when it closes is the nose.
Some biners use a 'keyhole' closure, Petzl Williams for instance. If you look at it in profile, it's flat and solid, if you turn it 90 degrees it will have sort of a keyhole shape.
Other biners have a recess or notch in that flat part which is evident in profile. Wire gates have to have the notched closure because the recess is where the wire hooks in.
On biners with the recess, a wired stopper(rock gear) can accidentally get caught in the recess. Not only does the gate not close, the load axis goes from the hooked nose to the bottom of the biner where the rope is. If you fall and the stopper holds, the top quarter of the biner will likely break completely.
Clear as mud?
Tree gear doesn't have wire connectors but if a biner binds on a clevis the situation is sort of similar except hopefully the gate is closed. It's not the same but it's a failure mode worth knowing about.
- Location
- Rochester, NY
I also put on a Fixe ring. Its a little heavier, but you cant tell when your climbing. And at 50kn its worth the peace of mind
in the treemagineers guide to...., the o rig is set with the rope running through the ring on the bridge. I run my o rig with rope running through a revolver as its less friction adjusting the length. Ive been not allowed to do this at comps due to bend radius over the revolver, surely its better through a pulley than the ring or am i missing something? using a normal carabiner and a fixe puts the system a little bit too far away so thats why i use the revo. Would be really good to get this cleared up. cheers for the help
countryboypa31
New member
- Location
- PA
Use two revolvers instead. It would increase the bend radius without putting it farther away. I do understand what your saying though. I don't get the difference between a ring and a carabiner. who knows.
you gotta watch too, if you using just a biner on your bridge and your putting your weight on and off your bridge maybe say in a weird position out on a branch, the biner can rotate and get side loaded. which is sketch
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