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Description

Build faster, safer, and better anchors with the Sterling PowerCord 6mm Cordelette. asst colors

The Sterling PowerCord 6mm Cordelette links multiple pieces of protection together in seconds to create an equalized anchor without the need for any other slings. Picture it: you get to the end of a pitch, fire in two bomber stoppers and a cam, clip them all with the Sterling PowerCord 6mm Cordelette, and tie an overhand or figure-eight knot. You now have an equalized, three-piece anchor with a power point, and it only took you about a minute. The 6mm PowerCord is stronger than standard nylon, breaking at a astronomical 4800lb. Plus, this bomber anchor didn't use up precious rope that you might need on the next pitch.
  • Note: colors are assorted; we can't guarantee what you will get

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Sterling PowerCord Cordelette - 6mm

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Here's what others have to say...

5 5

Love the orange color

  • Familiarity: I've used it several times

Probably long enough to make two anchors out of it. really like this piece.

5 5

Best Whitewater Prusiks. Period.

  • Familiarity: I've used it several times

I use this line with NRS NFPA Grabline when making rescue systems for whitewater. It holds, never stretches, and locks immediately when I let go of the line. I have never seen an accessory cord or cordelette do this, EVER. It is now the only prusik line I buy now and is definitely worth the investment.

5 5

Very Useful

  • Familiarity: I've put it through the wringer

This cord is very useful in making gear anchors. I cut it in half since it was way to long to have as one cord. I tied them together with a double fisherman and only use them for gear anchors when my 48 inch runners are slightly too short.

How does this Techno core compare to nylon...

Posted on

How does this Techno core compare to nylon and spectra cores? Is the strength reduced when knots are tied? Does this low-stretch cord put more stress on my anchors?

Responded on

Knots always reduce a textile's strength somewhat, however Dyneema is especially problematic because of its very low friction causing Dyneema knots to not bite properly.
HOWEVER, this cord's sheath is good old nylon. So I would not worry about knotting these.

On the dynamic question: Yes I think this cord's core does make it less dynamic and therefore would absorb less force in the event of a shock load. This is a concern whenever your anchor is even remotely questionable. But everything is a compromise...just be sure you make the RIGHT compromise when climbing. :-)

Cordelette strength

Cordelette strength

Posted on

Sterlings Cordelettes' strength ratings

Can you use this for a Prusik / friction...

Posted on

Can you use this for a Prusik / friction knots? I'm concerned that the Technora core is heat sensitive. For instance, you'd never use a dyneema sling for friction knots. Does Technora have the same limitation?

Responded on

You wouldn't use a Dyneema sling for friction knots because of its shape, not because of the material. If there were such a thing as braided Dyneema cord (which, as far as I know, there's not), it would be fine. To your question, this cord will perform perfectly well as a friction knot. Keep in mind that if a friction knot is being utilized properly, there should be no sliding and thus no heat. There's some heat if you're backing up a rappel with it, but not nearly enough to threaten the material.

To throw some numbers at you, one test of a fast 450-foot rappel saw the ATC achieve temperatures of 175 degrees F. Certainly enough to burn you, but Technora begins to melt at 932 degrees F. Perfectly safe.

Responded on

High-tenacity cords use aramid fibers (the technora core). Aramid has a significantly high breaking strength (higher than Spectra or Dyneema). It has very low stretch and a very high MP (900F). This Sterling cord has a breaking strength around 19kN (4,271 lb.). The only downside to these cords is that they have been shown to break down more quickly with repeated flexing.I read one study that showed when one section of Technora fiber cord was loaded with a 40 lbs weight and flexed over and edge 1000 times, the material lost approximately 50% of its strength, while nylon cords lost virtually nothing.

Responded on

Directly from Matt at Sterling:

It is ok to use as a Prusik as long as the diameter of the host rope is large enough for the PowerCord to synch down. Generally speaking, PowerCord is too stiff for use as a Prusik so, it won't work well enough on small diameter ropes but, larger diameter stuff it should work fine.

Heat is not a problem for Technora in this application. Typical Nylon melts around 400 degrees F and the Technora degrades around 900 degrees.

While tight radius bends should be avoided with higher modulus materials like Technora it is not really a strength concern as a Prusik since the Prusik generally slips on the host rope well ahead of the break strength.

Matt Andrews
Climbing & Outdoor Market Manager
Sterling Rope Co., Inc.

Responded on

OK, so the concern is with the temperature melting the prussik is probably moot IMHO. If using nylon cord as a prussik, you'd either be ascending or descending slowly which would not be enough friction to raise the temperature to melt the cord. Also nylon 6mm is typically 7.2kN MBS. Plenty enough to hold your weight. If you're zipping down the main rope, you'll probably be in one of these 2 scenarios. 1) you're falling - you should have a backup knot from the main rope tied/'binered to your harness, 2) you're rappelling quickly - you should have a rap device for this.

Will there be any more of the other sizes...

Posted on

Will there be any more of the other sizes in stock soon? 6mm, 7mm, etc.?

Responded on

I don't believe sterling makes any other "Powercord" cordlettes in diameters other than this 5.9mm because this uses the Technora core, but if you wanted a cordlette in another material they do offer other diameters.

5 5

works great

I really like the thickness of this, not too fat, and it works great for setting up a top-rope anchor

5 5

Bomber cord.

  • Gender: Male
  • Familiarity: I've used it several times

this cord is light weight and bomber.
it is a bit stiff to begin with but gets more flexible the more you use it.

Unanswered Question

everyone feels fine using this for anchors?...

Posted on

everyone feels fine using this for anchors? i assume its fine, its described on the sterling web site as a cordelette and for equalizing anchors so i assume its fine...according to sterling technora is a type of nylon, and i assume much less stretch. Does this have the same non water absorbing qualities of lets say spectra/dyneema?

I am thinking of using this to re-sling...

Posted on

I am thinking of using this to re-sling older Chouinard hexes bored to accept 8MM/9MM cord. Is this stuff stiff like Titan or the old 5MM Spectra? Would it be better to just use 8MM static with a 12KN MBS?

Responded on

This would be fine. The 4800lb breaking strength is 21kN, which is more than enough. The 8mm stuff wouldn't slide as much in the holes though, which could be a bonus.

Responded on

It's important to note that the breaking strength for static weight is 4800lbs but this does not directly translate to a dynamic force. Since this uses non stretching material for its core a fall would only have to generate 7.2kN to break this stuff.
It's super safe as an anchor or for other static purposes when used with a dynamic rope but should not be used as a rope or personal anchor point.

As for this exact question, this SHOULD be okay but you have to be very careful when modifying gear like this. Creating burns in the hex could easily shred the cord.

Will this work for a two bolt quad anchor...

Posted on

Will this work for a two bolt quad anchor when I'm top roping. I figured it would but didn't think it would hurt to ask.

Responded on

Yes, just make sure to set up a proper anchor.

5 5

Time to equalize

Before I only used webbing, but now that I am a trad addict I always use this cordelette. It makes it really easy to equalize 3+ pieces and bunches up nicely when clipped to the harness while climbing

Would anyone recommend this for making...

Posted on

Would anyone recommend this for making top-rope anchors? Was thinking about getting some to sling around boulders for part of the anchor..

Responded on

This is definitely strong enough for anchors and any types of falls. The breaking strength is 22kN unlike what is advertised in the spec sheet here. That is the same as the breaking strength of your carabiners...

Responded on

Sorry to repeat what I said on another question but :
It's important to note that the breaking strength for static weight is 4800lbs but this does not directly translate to a dynamic force. Since this uses non stretching material for its core a fall would only have to generate 7.2kN to break this stuff.

It's super safe as an anchor or for other static purposes when used with a dynamic rope but should not be used as a rope or personal anchor point or anywhere else where slack may be introduced into the cord.

Does the stiffness of Sterling PowerCord...

Posted on

Does the stiffness of Sterling PowerCord make it difficult to securely tighten a clove hitch?
Are there any other drawbacks of Sterling PowerCord related stiffness or other factors in anchor building?

Responded on

Yes, it is stiff. Makes good rap tat. But nothing I want to sue on a regualr basis.

Responded on

It is stiff. I have managed to tighten clove hitches just fine. Comparatively, dressing the knots can be a little bit more time. Excess portions of the cord tend to remain straight, so in the case of the equal-ette setup, the slack portion makes a stiff loop - giving the anchor a 'not as nice clean' look, though utility is not diminished. I rack it untied, butterflied, and clipped to a biner. Its compact and easy to tie a masterpoint.

4 5

slick buy

i picked up 50 feet of this a little while ago. extremely solid cord. its got a work load of a little over 2 tons, kinda stiff but really maliable and light as a feather. ive tied quite a few knots with it and as long as you sench them down the hold really well, does twist some though. its comfortable ( with in reason) if you have to make a swiss seat. it grabs well for prusking. bottom line: even though its stiff, it makes up for being light, i will be buying more and cutting this up to use for anchors and slings. would like another color, yellow not so good for the desert.

Can you use sterling power cord to sling...

Posted on

Can you use sterling power cord to sling hex nuts?

Responded on

If I'm understand your question correctly, you're looking to tie a piece of this cord around the wire portion of the hex nut? If this it the case, then no, I would not recommend it. As the force of a fall is applied to the cord, it seems the wire would potentially generate enough force to cut through the cord, similar to a rope or cord being weighted over a sharp rock edge.

Responded on

I think we may need a bit more information before we can help you. Are you planning on re-threading the hex nuts with cord (ie: replace the wire with cord) or are you looking to use this as a sling to carry a rack of protection?

Responded on

I believe you can if your hex nuts have holes big enough to use this cord, without modifying the nut holes. And never put cord next to cable when putting cord as the attachment point for a hex nut! that should be an obvious point. The advantage of using cord in a hex nut is the matter of being able to customize the length of sling from anchor to rope attachment point. This is a key point when determining how the load (you falling), etc. actually hits the protection point i.e. on a very zig-zag route, or one with deeper protection points,taking care to align the rope in a straighter line will ultimately make all protection anchor points safer by keeping them aligned as to how they were placed. I've found that the larger the hex nut, the longer the cord should be. About an inch per size, make sure you tie a triple fisherman knot, and keep the knot midway between nut and attachment bight in the cord.

5 5

High Strength

This is NOT nylon cord. The sheath is nylon and the core is Technora. This is low stretch high strength cord. The breaking strength according to Sterling is 4,789 lbs (21.3 kN). This stuff is can take some wear and tear. I use it when there's a chance the anchor will rub against the rock. CAUTION: When looping this cord tie it with a triple fishermans knot.

I noticed that the impact force going from...

Posted on

I noticed that the impact force going from pounds force to kilonewtons does not add up in the item description. 4800 lbf should be about 21.4 kN, not 7.2 kN. So what is the correct breaking strength for this cord, 21.4 kN or 7.2 kN?

Responded on

That is a good question. Usually the tensile (static) strength is in lbf. and the breaking (dynamic) strength is in kN. Since this is a static cord the breaking strength is weaker because this should be used only for static conditions (anchors, etc). I think i am right, hope this helps!

Best Answer Responded on

lbf and kN are both units of force. I would guess it is a typo. From Sterling Ropes website, the mean breaking strength is 4271 lbf/19.0kN

http://www.sterlingrope.com/product/299384/A060PC%20cordelette/_/6mm_PowerCORD_Cordelette

Responded on

The impact force of a rope refers to what the force of impact would be on a climber if he/she took a fall of factor 1.77. Therefore the figure would mean the impact force would only be 7.4kN. Whether this number is actually correct or not, I have no idea...

Responded on

Backcountry wrote the specs correctly.
The breaking weight for static loads is 4800 lbs. Meaning you can hang anything less than that weight from this rope.
The 7.4kN rating refers to impact. Not meaning that this will cushion a fall to only be 7.4kN (it has no stretch and will not cushion a fall at all) but rather that 7.4kN of force will break the cord. That can be generated very easily by a body in motion. A fall factor 1 will generate over this much force. So make sure there is not slack is the system.

Lots of great info here: http://dmmclimbing.com/knowledge/how-to-break-nylon-dyneema-slings/

Responded on

Worth a read .... http://wallrat.com/PDF_Files/forcesinleadfalls.pdf

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