Low Elongation Static Lines?

countryboypa31

countryboypa31

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I'm looking for a basic list of the lowest elongation static lines. Ones we typically use in tree work and if there are others from other fields of work i don't mind them being thrown in as well.

I'm looking for a new static line for work and now that i'm climbing SRT 99% of the time the stretch (or lack there of) is about the most important thing i look for in my climbing (static) line now.

Hope some of you can help me because my searches have ended up a lot like a dog chasing its tail.
 
I just want to mention that low stretch lines are great, though a climber must be extra aware that if the SRT TIP were to fail, the lack of stretch in the rope means that the impact force when the rope catches in another crotch, and the climber stops abruptly, will transfer even more to the climber's body.

With a great TIP, the low elasticity lines are probably the best in all regards, but we've heard about some remotely set TIPs blowing out and being backed up by the lower crotch. I think that one was where the line was over a small branch a few feet above the main crotch, which was perceived to be the TIP.

I would just like to suggest people can be prudent to use some binoculars, as needed, to somewhat confirm their TIP, and bounce test the TIP.
 
Thanks, I am aware of that. Its def something to keep in mind, but to be honest if i'm climbing SRT and my TIP breaks i have the chance of dropping into another crotch and being caught. If a Ddrt TIP breaks your screwed. So i'll take a sudden stop over a complete fall any day regardless of the stretch.

It doesn't really answer my question though.

I'm using CMC Static Pro right now. Works great and less than 1% stretch at 300lbs. Just wondering if there is any other static ropes out there that are comparable. Wanna do my research before another purchase, and my own searches have produced little results.

Any others low elongation ropes that you know of?
 
Just wondering if the static ropes have the same abrasion resistant characteristics as standard climbing lines.Ive avoided climbimg srt with my static lines because of the low stretch and the fact that they are designed for ascent only.Just wondering what the manufacture would suggest and if they would approve of using them in this fashion.
 
Staic lines even if they have less stretch do seem safer in an srt configuration(than ddrt) -because of more rope in the system and the fact that its not double thus cutting the stretch in half.
 
The abrasion factor shouldn't be much of an issue as the rope is not moving as in Ddrt. Plus static ropes are normally used in caving and with ascenders which are known to be hard on the rope. I think that Static ropes actually have better abrasion resistance.
 
I really enjoy climbing with my 7/16 KMIII but went back to tacyon because on long descents the KMIII would get really hot. Anyone else have this problem with other static lines.
 
A tube-style cambium saver is a help against abrasion in the main crotch, if tying it back off to the base of the tree, rather than cinching it on the branch. If only they didn't keep disappearing. The lack of clip-in loop doesn't help it to say located.

Even though it is "stationary" it will move back and forth a bit. While not moving as much as in DdRT, all the abrasion is in one spot on the rope, on the same side. Often not a big deal, but can be helped if the situation warrants.
 
Isn't it against ANSI standards to "work" off most static lines due to the low stretch? I remember reading that there is a minimum stretch % for working ropes. If that is the case it would mean you could only ascend on static lines? If you were to work the tree SRT you would have to switch over to a rope with more stretch? Any comments?
 
I always thought it had more to do with the bend radius on static lines. Like running it through a pulley or through FS rings. Static lines aren't ment for that.

Jimmy, i'm not so worried about the abrasion from the cord either because the Kong Robot takes most of the friction. I use tenex tec or equivalent of it and have never had a problem with burning because of how much of the friction and heat is taken by the Robot. Correct me if i'm wrong but most static lines the strength is in the core, its not a true 50/50 split as is with arborist lines. The cover is more abrasion resistant.

I haven't tried the tube cambium saver. But am planning on it, just haven't got around to making or buying one.

Globe 5000, i'll look at that thanks. So far the best i've found (for the ones i've found) CMC rescue Static Pro, Sterling HTP, NE KMIII.
I couldn't find any elongation stats on any of PMI's rope. Anyone help with this? Any others from the Rock climbing Caving world that should be considered?
 
I think static lines are not allowed because of the low stretch.If you double them in a ddrt application it even cuts that stretch in half.So the thinking is if you did fall you would subject yourself to a greater shockload because the lines have no give.Traditional climbings lines have alot more stretch so if you fall the thinking is you wouldnt be as prone to serious injury.I dont think climbing srt off a static line has even been covered by the rules committee just ascending.I would curious to see what the head judges at the comps would think of this or like I said before the manufactures of these ropes.
 
Thanks yeah i just found the blue water spec static.

I'll update the list that i've found, give feedback if you know anything about these ropes please! All are 11.5mm

BlueWater Spec-static 1.5% at 300lbs
PMI Isostatic 1.2% at 300lbs
PMI Talon 1.2% at 300lbs
CMC Rescue Static-pro 1.4% at 300lbs
Sterling HTP 1.7% at 300lbs

Coun't find stats on Globe 5000.
 
The negligible stretch in a rope like KMIII is a benefit for climbers. If there is ever a fall the climber will want some energy absorption in their system. Climbing on a true static or low stretch rope is likely to lead to injury.

HSE and CE standards have measurable elongation rates for ropes used in work positioning. I don't have the specs at my finger tips but ropes like Tachyon meet the standard. The ANSI standard isn't as refined. Jimmy is on the right track, hear him.
 
Can anyone direct me to some rappeling or caving forums? I have a feeling that they might have more experience with these ropes, so i can get appropriate feedback before buying.
 
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