tenex eye and eye

[Mangoes]

A point to the short bury that Nick refered to. I tried making some 16 strand eye & eyes a few years ago, but didn't care for the long bury. I made 3 24" e&e with a rapidly tapering 6 inch bury, and had them tested. On average they failed a 3500lbs in a straight pull (not a basket hitch).

 

[Lumberjack]

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I am comparing apples to apples Nick; tenex polyester hollow braid is not as secure for friction hitches as kernmantle or bouble braid polyester of the same diameter.

[/ QUOTE ]

A poly double braid is no more secure than a 12 strand. The outter layer has more surface area, wear through that your loading onto the smaller surface of the core, which just melts that much faster.

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...Shows how confusing all this can be to the inexperienced......

Leon - In my capacity as equipment inspector, instructor and assessor, you'd probably be amazed at what guys think is acceptable out in the field. my opinions are based on repeat experience of seeing these things show time and again - virtually worn through hollow braid, with the climber thinking the core is attached and secure, when its just a back splice. Just like climbers think a 16 strand single braid is a kernmatle, so if half the strands are cut, it doesn't matter because they have a core to rely on.

There are simple and safe alternatives for the inexperienced.

[/ QUOTE ]

Yes, we call it training (addestramento). Your saying that a poly double braid is safer than a 12 strand because the climber will be correct that there is still a core inside? Foolish. On any rope construction I can think of, any time the core is showing, its time for replacement.

The problem IS NOT using tennex/double braids/kernmantles...ect, its a lack of training. The way you present your argument is foolish, and the climbers you refer to are ignorant. A little knowledge is a dangerous thing.

 

[Lumberjack]

Mangoes, where did the splice fail?

 

[knudeNoggin]

[ QUOTE ]
A poly[ester/amide] double braid is no more secure than a 12 strand. The outer layer has more surface area, wear through that your loading onto the smaller surface of the core, which just melts that much faster.

[/ QUOTE ]
Not so fast: I think you'll find that, at equal diameters, the dbl.braid / kernmantle ropes
are heavier--have more material--than 12 strand;
also, 12 strands tend towards being oriented torwards achieving great strength & low stretch
with lengthwise-oriented fibres, and can also be softer & flatten more against an object
(exposing more surface to abrasion).

*kN*

 

[Lumberjack]

I agree with all 3, an oversight on my part, thanks for the correction.

So perhaps it would take a smidge longer to burn through the more dense double braid, but I stand firm that that is a false security.

I have burned nearly through both myself, testing out different things a couple years ago. Both were abused past MFG's specs, both needed replacement, only person who would have been at fault would have been me, although it was a test, like I said. I hitch with beeline myself.

 

[NickfromWI]

[ QUOTE ]
A point to the short bury that Nick refered to. I tried making some 16 strand eye & eyes a few years ago, but didn't care for the long bury. I made 3 24" e&e with a rapidly tapering 6 inch bury, and had them tested. On average they failed a 3500lbs in a straight pull (not a basket hitch).

[/ QUOTE ]

What kind of rope were you splicing? 16 strand arbo climbing line?

love
nick

 

[rich_h]

I have been pretty frustrated with the short life span of single end Tenex (Yalex, Wallex, etc.) but I still like it better than using 16 strand. I find that Beeline tends to flatten out on me after a short while, causing more friction than I want to deal with and HRC while extremely nice clamps down horribly when using it with a pulley. My solution for the week is Ice Tail by Samson. It looks and feels like 12 strand polyester but is actually a Technora blend. This stuff has held up to amazing abuse without much wear, is easily spliceable, and while it also clamps when using a pulley I guess a climber can't have everything.

Of coarse, next week I may completely change my mind and use something else.

 

[Mangoes]

LJ- the splices broke close to the end of the taper.

Nick- Blue streak, core extracted and not replaced between the ends of the bury.

 

[KentuckySawyer]

[ QUOTE ]
. My solution for the week is Ice Tail by Samson.

[/ QUOTE ]

I didn't like that stuff at first, but I'm warming up to it. At first it seemed to get tacky and bind up. I switched it to the flipline on my saddle, where it did fine. The past couple days I've been using it as my climbing hitch and am surprised that it has been working well. Maybe there is a coating that needs to wear off.

Tenex is still better.