Replacement Bridge for Sequoia

What kind of rope comes stock for the bridge on saddles like the ergovation, treemotion or the glide?

Is this just an issue with spliced bridges (vs. knoted bridges)?
 
The issue is with the material rather than how it's attached I think. Technora works as a bridge no problem but it wears really fast in that application. If it's covered with a jacket, you can't know how worn it is.

Polyester fiber is generally more flexible than aramid fiber so it handles the bending stress better.

Knotted or spliced doesn't seem to be a factor.
 
The ergovation uses Velocity, a double braid.

Where the core & cover share the load. Secured with a stopper knot.

Treemotion is similar.

The risk taken with a core-dependant splice is that the load carrying part of the bridge is hidden under a jacket & cant be inspected.

Next time you retire and old beeline/ultratech etc prusik, cut the eye of one end, pull the cover off, and you'll be shocked at how manky looking the old core is......
 
Hey guys,

The bridge on the glide light and the cougar rope bridge look to me like a core dependant splice.

What about these? : http://www.treebuzz.com/forum/showflat.php?Cat=0&Number=215645&Main=215633

I'm not trying to bring anyone down. This has been a hot debate at work these past days and since Im one of the only ones that speaks english, Im just trying to get the most info on this subject as possible.

I think if manufacturers are giving people bridges that are possibly dangerous, than this could be a serious problem. I know a lot of people who probably dont inspect their bridge very often, let alone know what it is made of.

My question regarding the knot vs. splice issue was because my boss suggested that the problem might occur where the crossovers meet on the splice( where there is the most bending) and maybe it wouldnt be so much of an issue if knots were used.

Thanks
 
My bridge did separate in the middle which is also the middle of the crossover for the splice and the place where the rinbgs ride most of the time. I can't say it ISN'T related but I think the crossover had little to do with it. It's main function is to keep the thickness consistent, the Brummels are bearing the withdrawal load and the outer braid bears the tension, compression and bending.
 
[ QUOTE ]
Ive got one I just retired and can't decide if
I should take it apart for inspection or break test it.

[/ QUOTE ]

Oh, take it apart, for sure. And tell us what you find.
 
moray- I'll make a video of it even!

matdand- I don't think the crossover would make matters worse. Quite the contrary, in fact. The more fibers present, the thicker the rope diameter and thus a less of a bend that is possible on the rope. Less of an angle makes for happier rope fibers.

When I make my bridge, the tails cross ALLLL the way through the sling so that the tip of each buried tail is way over by the opposite eye.

love
nick
 
Just thinking ahead here....

Nick being the splice-head that he is, with the ability to easily replace items, would likely retire something loooonnng before many others would.

So i'm not expecting something too destroyed looking....

But i'm interested all the same!
 
Sometimes its quite the opposite, actually. I get so busy splicing for other people that I usually don't have time for myself.

I'l do a little vid of the bee dissection.

love
nick
 
You got it!

Honestly, when I look through my gear bag- I see a lot of stuff that are test splices (like my ocean polyester eye-eye sling is the first one I ever had and I needed to know how much rope to cut for a sling, so I gave it a shot to see what happens) or maybe stuff that ended up an inch too long or too short.

I think I've only spliced one thing for myself all year: my Imori lanyard!

love
nick
 
I have had a sequoia for about 2 years now, climbing on it 5 days a week, and find the bridge has mininal wear. It's no where near needing replacement as far as I can tell. I think the info about these aramid fiber ropes not being suited to bridges is very, very crucial info. I remember reading a thread that I think was from last year where someone had such a bridge and the core fibers were completely severed and the sheath was fine. Although I don't see how you wouldn't notice this with daily inspection, we are now getting in other threads reports of unexpected failures in bridges made of these materials.
It would seem to me that friction savers would experience similar wear impact, and we currently have a thread where these types of ropes are being discussed for that use.
Is anyone out there working on making these hazards known to a wider audience? Has anyone put an article in the ISA or TCIA mags? Tom? Nick? Are manufacturers taking any position?
As I've said before, this is about the scariest thing I've seen in my short time on TreeBuzz. I think this hazard needs to be fully investigated and much more widely announced.
I think it would be helpful if someone really familiar with rope listed the brand names (or model names) of the ropes containing these fibers. I can see someone out there who is less familiar with the details of rope just taking a piece of this stuff and knotting it onto their saddle without having any knowledge of this problem and then DYING!
 
Classic, I'm not sure what they use on those but just replace it. Get the monkey off your back, we have enough to worry about.
 
[ QUOTE ]
So what is the bridge made out of on the Glide 2?, I've been climbing on mine for about 3 years now and after reading this thread I am very worried about it.

[/ QUOTE ]

Last time I saw a Glide 2, this was the rope bridge:
http://samsonrope.com/index.cfm?rope=91

Polyester cover, with an SK75 core, which most arborists know as 'Amsteel Blue'.
SK75 fibers don't 'self destruct' like technora fibers.

I would call Buckingham Manufacturing, or Samson Rope to ask about how often the bridge should be replaced.

The bridge on my B2 gets replaced every year, which is 'Spectra', a close relative to SK75.
 
[ QUOTE ]
So what is the bridge made out of on the Glide 2?, I've been climbing on mine for about 3 years now and after reading this thread I am very worried about it.

[/ QUOTE ]


I have the same saddle. Its about 2 years old. Feels good, but because of the lock stitching of the sheath to the core, its impossible to inspect the internal structural parts. If you decide to replace your bridge, it would be cool to get a video/ photo documentation of the bridge intact and dissected. When I replace mine, I'll do it. Just don't think that it seems at all worn out yet for mine.
 
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