Sterling 11mm HTP for rope bridge?

ARLO said:
Not me. I think just about any good quality double braid, 16-strand or kernmantle is fine for a bridge. What really matters is that you install the bridge correctly. I should add that I am not using one of the adjustable bridges like some are now using and I might have a different opinion if I was using an adjustable bridge.
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I use the globe 3000 with a 16 strand for my secondary bridge. I do like the adjustable bridges so I'm curious of your opinion on that. I once used the petzl adjust rope clamp on the globe and it worked well but due to the stock size length I didn't feel it was as advantageous as I wanted it to be. I've been messing around with incorporating different hitches tied to the lower d's on the 16 strand. I've made it work but just feel it could be better. So basically the stock globe is short and the 16strand is long for now. Any thoughts or opinions would be much appreciated. I do have some new lengths of sterling super static2 that fit through the petzl adjust rope clamp but i thought the kernmantle construction wasn't good in this application....hence the questions about you guys using the HTP. Now I know the htp is better than super static 2. But the specs on the super static 2 are good for life support.
 
Kernmantles have inherent redundancy because the load is shared between several parallell strands in the core that will experience the repetitive loads seen by a rope bridge slightly differently from each other over the life of the rope. The lack of ability to inspect the core strands is offset by the fact that there are many of them. The cover will probably rupture before any (but almost certainly before all) of them fail due to flex fatigue.
I recently saw a factory Sequoia bridge wear through the cover. The core strands were pristine.
 
Mowerr said:
I use the globe 3000 with a 16 strand for my secondary bridge. I do like the adjustable bridges so I'm curious of your opinion on that. I once used the petzl adjust rope clamp on the globe and it worked well but due to the stock size length I didn't feel it was as advantageous as I wanted it to be. I've been messing around with incorporating different hitches tied to the lower d's on the 16 strand. I've made it work but just feel it could be better. So basically the stock globe is short and the 16strand is long for now. Any thoughts or opinions would be much appreciated. I do have some new lengths of sterling super static2 that fit through the petzl adjust rope clamp but i thought the kernmantle construction wasn't good in this application....hence the questions about you guys using the HTP. Now I know the htp is better than super static 2. But the specs on the super static 2 are good for life support.
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This is a good question for Richard Mumford or one of the other guys that are using adjustable bridges. Hopefully they will chime in.
 
SomethingWitty said:
Kernmantles have inherent redundancy because the load is shared between several parallell strands in the core that will experience the repetitive loads seen by a rope bridge slightly differently from each other over the life of the rope. The lack of ability to inspect the core strands is offset by the fact that there are many of them. The cover will probably rupture before any (but almost certainly before all) of them fail due to flex fatigue.
I recently saw a factory Sequoia bridge wear through the cover. The core strands were pristine.
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I believe the super static 2 is nylon, which I know is weak when wet and less heat resistant...how do u feel about a bridge made of nylon kernmantle?
 
Heat is not normally an issue with bridges, and the loss of strength with nylon is pretty small when it gets wet (about 10%). So, as long as the nylon rope has a polyester cover (most kernmantles) and meets the strength requirements I can't see why it wouldn't be ok for a bridge. I wouldn't fret about it too much. Just use good rope, and make sure you install it correctly with good knots. And replace it if it gets worn.
 
I use platinum 10.5 with a roll'n lock. It's my stock bridge, but easily sourced and replaced.

I'm surprised platinum isn't used more.
 
WaitakKauri said:
I use platinum 10.5 with a roll'n lock. It's my stock bridge, but easily sourced and replaced.

I'm surprised platinum isn't used more.
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It doesn't end up in the scrap bin at my local shop. If he had it, I would use it. The video demonstration of it handling a shockload with a toothed ascender was impressive. Maybe the best cantidate for an adjustable?
 
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