KM III DRT?

It's too stiff for a climbing knot. Have to use a split tail system. It's a heavy rope if you are talking the 1/2 inch.

I'd try to talk him out of it. There are better ropes, even the HiVee would be much better.
 
Split tail for DRT is the norm for us. HiVee is alot stretchier than what he's looking at right? The idea is to get something workable for DRT with an eye towards SRT somewhere in the future. Having not tried it I was wondering if these extremely low stretch ropes work in a double rope system and how they feel.
 
I agree with the above KMIII is to stiff for DRT.

The perfect compromise is Yale Kernmaster. I have been using it with a stitched eye, and split tail and it works great. I have also used it for SRT Ascent and it works very well for that as well.

For more of my observations look up the Kernmaster thread from a few weeks months ago.

Tony
 
Rocket,
Static lines are not designed for drt. You want some stretch and bounce to your rope. Otherwise in the case of a fall your body is taking the blunt of the shock load. If you're looking for something fairly stiff but still will absorb some of the shock loading in my opinion would be rocket line by all gear.
 
My vote is for cougar blue. Ask luke I think he is picking it up soon. I have not used my access line since I've been demoing this rope.
 
Kermaster and KM III have comparable elongation and they're both marketed as static lines. They are both kernmantle ropes too unless kernmaster is a misleading name, so what's the diff?
 
I climb on velocity, tachyon and blaze and all 3 work well with srt and srt. I have a 230ft piece of kmIII that i picked up to use with the wraptor at my last company and I wouldn't use it for drt and honestly I dont care for it srt either. I've heard great things about rocket line and its on my list for my next line.
 
Kernmaster is indeed a Kernmantle, but the core is plaited not parallel strands. This along with materials gives it about 2.2% stretch at loads below #700 or so.

However, when loaded over the #700 or so threshold the stretch goes to 5% or so. (I am just paraphrasing numbers here, you can look them up for yourself)

The "stretch" comes mostly from the core twisting out (think three strand). Or at least that is my understanding.

I am guessing it is not hand sliceable because of the thin sheath, but a stitched splice is nice and compact.

Keep in mind also that an arborist's definition of static may be very different than a rock climber's. DRT systems do not necessitate factor two falls for climber advancement.

As SRT. Work positions systems develop I think the definitions of static and dynamic between rock and tree will become more similar.

Tony
 
If you use a static kernmantle for DRT you're just going to get a harder ride than if you use one of the arborist ropes built for DRT. And you get less options for example say you want set a second tie-in with the other end of the rope and you don't have a second split tail on your harness.

Also agree with the previous comment, too heavy to drag the tail around in the tree.
-AJ
 
I appreciate all the feedback. I guess the rope stats only tell you so much about a rope. KM III and kernmaster look practically identical to me. We did some climbing on snakebite that shed some light on the argument for me.

I see from re-reading your posts that I wasn't paying close enough attention to terms. It felt weird using it for drt, too stiff, runs poorly through the slack tender at any angle other than straight up and down. Like climbing on a cable.

Snakebite is definitely on the extreme end of the scale but it gave us an idea of the "feel" we could reasonably expect from ropes of the same construction and low elongation. Lastly, it did make a fine tautline hitch for my boss.

Thanks again!
 
I hear about a lot of people work positioning on these static ascent lines. I personally dont get it as they seem to have no desirable features whatsoever. KM 3, snakebite, ecalator, kernmaster... None of those ropes are designed for moving around the tree. They are great for going straight up and down. but who does that?
 
Re: KM III DdRT?

[ QUOTE ]
I hear about a lot of people work positioning on these static ascent lines. I personally dont get it as they seem to have no desirable features whatsoever. KM 3, snakebite, ecalator, kernmaster... None of those ropes are designed for moving around the tree. They are great for going straight up and down. but who does that?

[/ QUOTE ]

That was one of my first conclusions when I started my research into working SRT. Kernmantle static lines work great for going up and down...only. doing any sort of lateral or off-angle movement doesn't work. Better to use an arbo rope that is more supple.

Some stretch is good.
 
Re: KM III DdRT?

Tom you are spot on, a little stretch goes a long way, a climber can load a rope to give themselves just a little higher/longer jump for instance.
 
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