Close to Death

if i were you i would go to the regular ring on the bridge if you want swivel hook it on another way.something with that swivel is doing a number on that rope
 
I'm been thinking about buying a swivel for my TreeFlex bridge to go along with my HitchClimber pulley, but this is exactly the reason why I haven't yet.

Petzl has too sharp of a bending rabius or at least their older models did. I think there are better swivels out there for this type of application.
 
lesson learned about how even a seemily dull edge will start to cut your rope when wieghted. Suggest you read the information paper on things when you buy it rather then just cut it free and start using it. Had you read it before, you'd of seen not to connect directly to rope, would of known the day you bought it that it would cut rope over time, and Norm would not of had to spend 3 nites looking at to tell us that the fibers where cut. DDUUHHHH.
crazy.gif
 
I have a mickey mouse pulley on my bridge. No abrasion that way. If I want swivel I'll have to hook the swivel snap above to it.

Good thing you're still in on piece.
 
The new petzl swivel has smooth edges, i have one on my saddle and love it. I've been climbing on this bridge for a while and seen no significant wear.
 

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[ QUOTE ]
If you want a swivel try one of these.


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I've seen those for sale but they never mention who makes them -- which makes me wonder. Is there perhaps room in the Petzl swivel for a thimble? And what is the conclusion here regarding the optimum rope for a bridge?
 
I think there would be a market for a new arborist bodyline redirect carabiner.

It would keep the two upper lines separated by having a center structural support body with a gate on each side of it. Like a boat anchor tattoo with gates for each rope.

A captive eye at the top, double/triple locking gates, and you're good to go.

And since I invented it, I'm afraid I must insist that it be named the Arborist Redirect Carabiner.(ARC)

jomoco
 
[ QUOTE ]
I thoroughly examined the cordage last nite. It's very obvious that it was cut. IG and I checked out the Petzl swivel and I pointed out to him the sharp edges on the black part.
...
Also, it's a case of the wrong fiber for the application. Technora will abrade itself when the fibers rub together.
...
It's pretty noticeable how clean cut it is. There were only 2 pulled strands. The rest were completely cut or partially cut.

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Very glad this was not the tragedy it could've been.

First thing: we STILL have not been told HOW OLD
(and, more importantly, how much used ) the cord
is? After all, saying that (1) cord should not be run
through the swivel (good catch, re manuf.'s guide),
and (2) it's the wrong cord type are fine,
but if it turns out that it's ancient or heavily used,
that points to a bigger issue--and maybe ameliorates
the concerns 1 & 2. (E.g., that Todd Skinner case is
of using the right thing correctly, but WAY too long
(and, sadly, it would've been such an easy thing--just
a belay loop--to have backed up with cord such as this!).)

Consider that Aramids are highly cut resistant (they
wear out knives), and this cord seems to have had a
lot of use. It pretty much lost all of its red coloring,
e.g.. 5/16" is mighty small, but you'd think that the
damage must've come in degree, leading up to the final
straw, and that the wear point should've been visible.
As has been noted, flex fatigue is an issue; but if one
can get reasonable service from it (and this case resulting
from a combination of hard edge + excessive usage), that
should be noted; supposedly, Technora is better than at
least some of the early Kevlars.

I note that Atlantic also offers a same-diameter (same
strength figures) double-braid of Technora, claiming
that this Techline is the core (which can't be so if
the core + sheath is same diameter--a thinner version,
thus).
[ QUOTE ]
[FROM ATLANTIC]
<u>re Techline</u>: Manufactured as a 16 strand single braid of technora our prusik loops are high strength, low stretch and have excellent heat resistant properties. This product is coated with a red polyurethane coating and is an excellent compliment for our tree climbing and rigging lines.
. . . . . . . . .
<u>re Dble.Techline</u>: Manufactured using our 16-strand Techline and covered with 24 strands of braided technora this prusik loop is easier to grip and has a longer life span. The Double Techline continues our tradition of high strength, low stretch and heat resistant prusik loops. The core of the product is coated with an orange polyurethane coating and is an [SIC: i.e., it just ends at "and is an" ???] (Product# Techline33)
-----
[NB: diameter &amp; strength data is unchanged; implication is that the DT core cannot be = "Techline" and be covered with a sheath and be same diameter!]

[/ QUOTE ]

Petzl's current swivel doesn't show soft material through
it, but advises to use a sling or other closed loop in
cases where tension is intermittent and so one could
not ensure that 'biners would remain in proper orientation.
cf http://en.petzl.com/petzl/ProProduits?Produit=468

How thick a cord will fit through that old swivel?
Can its offending edges be rounded, now, file &amp; sandpaper?
--or given a protective leather padding, perhaps?
(It looks like not a very big fit even with the 5/16 cord.)

Finally, Norm, could you put a flame to some of that
busted material: just to check on its being pure aramid
(which won't burn but just blacken). What the heck!?
I often wonder if, with such lookalike multifilament fibers,
vendors ever put in some filler stuff vice the pricey stuff.

*kN*
 
[ QUOTE ]

Petzl's current swivel doesn't show soft material through
it, but advises to use a sling or other closed loop in
cases where tension is intermittent and so one could
not ensure that 'biners would remain in proper orientation.
cf http://en.petzl.com/petzl/ProProduits?Produit=468


[/ QUOTE ]

However the sequoia information (pg 5 of SEQUOIA specific notice) shows it as an approved attachment.
 
A friend noticed in the sherrill catalog today, that the treemotion is shown with the petzl paw rigging plate as a potential attachment to the bridge.

I was wondering if this setup would be prone to the same failure discussed here?
 
hey man the bridge looks warn, but look at your floater, and the bend ratio of the bridge in comparison to the swivel. if you use a long length on the bridge the bight could have added to the stresses on the warn bridge. i use the same swivel, and have used B-line with good results. glad your with us.

air under the feet can clear the mind
 
I personally don't like the square edges on that swivel. I just made the jump to a saddle with a rope bridge about 8 months ago. The bridge started showing signs of wear very shortly. I took the advice of another and tied in a piece of climbing line and now clip into both bridges. You would never come across this problem with the older saddles and by the way
YEEFNHAA dude, that must have been some ride.
 
I have not trusted any bridge unless its brand new since the old versatile, that I used those nylon rollers on. Been backing up everything with a little length of black widow ever since. Great catch Bro!
 
I climb on a DragonFly with a piece of Poison Ivy as my bridge. I use a fisherman at either end, with rope thimbles directly on the loops of my belt. Sorry no pics.

I run a micro mouse on my bridge which keeps abrasion at an extreme minimum. I would never use a swivel, unless it was somehow on a micro pulley, but that's just me.

Glad to hear you'll climb again.
 
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