Treemotion bridge material?

@SomethingWitty; So you're saying that you tried using 1/2" Amsteel cordage as a replacement rope bridge, correct? How did that seem to work out for you, if so? Thanks in advance for any answer you choose to provide.

Tim
 
Sgriff said:
Ya I won't be doing that.
Aramids
The family is known as aromatic polyamides. Nomex was developed in the early 1960’s and its properties led to wide use in protective clothing, insulation and as a replacement for asbestos. Further research with this meta-aramid led to the fiber we now know as Kevlar. Kevlar and Twaron are para-aramids. Kevlar was developed and tradmarked by DuPont and became commercially available in 1973.

Beeline is Vectran core.

Vectran is a manufactured fiber, spun from a liquid crystal polymer (LCP) created by Celanese Acetate LLC and now manufactured by Kuraray Co., Ltd. Chemically it is an aromatic polyester produced by the polycondensation of 4-hydroxybenzoic acid and 6-hydroxynaphthalene-2-carboxylic acid.
Click to expand...

Damn! You beat me to it! I was just going to say all that.

Tim
 
TimBr said:
@SomethingWitty; So you're saying that you tried using 1/2" Amsteel cordage as a replacement rope bridge, correct? How did that seem to work out for you, if so? Thanks in advance for any answer you choose to provide.

Tim
Click to expand...

On my cougar I did. I ran it for several months. Smooth pivoting on the figure 8 that I was running as a bridge ring. It was fine, but the oxidized aluminum dust made it get a really dark black underside faster than I expected. It also ended up more rectangular in cross section than I was prepared for. I got weirded out and got a few feet of arbormaster.
 
I'm thinking the similarities are small molecular changes that in turn make the two completely different.
As in it is not in the aramid family.
7f8398854d7d7e7ca5b8271d8bd5119f.jpg
6373b9e490f1bdc646a81147135c3c96.jpg
53eb611d9195809e46da6808dec49ab4.jpg
and of course http://imattec.com/linked/vectran - technical data.pdf
 
AR-omatic poly-AMIDS, vs aromatic polyester,i see where the name is from and obviously not the same family of fibres,i was in the field today when we were talking [emoji37]
 
the buckingham warp speed bridge is dyneema core/core depenant construction(not to mention spliced as well) and bomber no doubt about it.

What diameter was the failed bridge?
 
Nah that bknghm (warpspeed) bridge could hold up a truck,it's dyneema,strong as all heel. With a jacket cause it's low melting point
 
Ya i seen that too thread too how funny,Nick didn't have any bad to say about the fibre choice...so?
f25f7d8eb8237033e330cdb8082f2196.jpg
from another thread here,beeline for bf2
 
Levi.CO said:
Isn't the issue with beeline that the core carries all of the load and you cannot inspect it? I saw a fella drop 15' feet or so to the ground when his snapped clean in 2. I also no another person in town who had the same experience.
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Wow! Great data points, and really frightening! For one person, namely you, to have two instances of failure within his own small circle of aquaintences to me makes this a really high probability event.

Thanks for posting.

Tim
 
Just to be clear, in case anyone else stumbles in towards the end, this thread isn't about whether or not to use the supplied bridge, it is about what the material is and where I can get a longer length of it. Given that it's unavailable, the discussion shifted to what would be a suitable substitute, and I believe a suitable substitute was found: Ocean Poly. The failures reported were all Bee Line.

A reasoned an informed discussion of materials and forces and properties is important in determining any of our equipment or practices.

To be clear, I don't advocate saving money at the cost of safety or effectiveness. Careful consideration and inspection from all angles should be given to everything we do. On the other hand, innovation or making your own shouldn't be ruled out, and neither should buying off brand. Just because teufleberger said so... Don't just trust company engineers and marketers and lawyers

Sent from my Nexus 5X using Tapatalk
 
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