8mm Oplux questions & uses

[sojourner]

Personally, at 22kN, I am not worried if the distel and no sewn eyes lowers strength by x amount. My armor-prus is about 22kN and I have that in a distel and no sewn eyes.

 

[Tom Karrow]

Seems like the 35cm beal jammy is a crowd favorite

Not sure how Beal will respond. I would guess CYA negative.

I think the language lawyers will keep them from a candid reply.

That said, the only thing I could see wrt strength is not using a sewn loop (knots instead). And that would be the same regardless of Beal jammy, armor-prus or any other prusik cordage.

Maybe using a klemheist and keeping the sewn loop might some feel better. Beal jammy has picture of prusik or French prusik (autoblock) as usages for jammy. And the klemheist is somewhat similar.

In any case, I always back up my LB and tether with an alpine butterfly. So there’s that.

In no case will I ever go to the kong duck.

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."In no case will I ever go to the kong duck."........why?

 

[mattsteg]

Not sure how Beal will respond. I would guess CYA negative.

I think the language lawyers will keep them from a candid reply.

That said, the only thing I could see wrt strength is not using a sewn loop (knots instead). And that would be the same regardless of Beal jammy, armor-prus or any other prusik cordage.

Maybe using a klemheist and keeping the sewn loop might some feel better. Beal jammy has picture of prusik or French prusik (autoblock) as usages for jammy. And the klemheist is somewhat similar.

In any case, I always back up my LB and tether with an alpine butterfly. So there’s that.

In no case will I ever go to the kong duck.

I agree with your lawyer suspicion, unless they point to the cord available ala-carte.

The main concern would be if this cord is abnormally poor at maintaining strength with knots, and even then the liklihood would be more that "other options are actually just as good or better and you are getting less margin" vs any strong chance of failure. Say ropeman performance vs prussik...but even that's likely extreme.

 

[tider]

For the guys that are using the Safeguard with an auto block to repel down on the oplux, Would you go with the Beal Jammy or the Hollowblock?
The 35cm long enough?

Thanks


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[Islandshooter]

Not sure how Beal will respond. I would guess CYA negative.

I think the language lawyers will keep them from a candid reply.

That said, the only thing I could see wrt strength is not using a sewn loop (knots instead). And that would be the same regardless of Beal jammy, armor-prus or any other prusik cordage.

Maybe using a klemheist and keeping the sewn loop might some feel better. Beal jammy has picture of prusik or French prusik (autoblock) as usages for jammy. And the klemheist is somewhat similar.

In any case, I always back up my LB and tether with an alpine butterfly. So there’s that.

In no case will I ever go to the kong duck.

Sorry if I missed it in this thread, but why not there Kong Duck? Just curious, thanks.

 

[Squirrels]

For the guys that are using the Safeguard with an auto block to repel down on the oplux, Would you go with the Beal Jammy or the Hollowblock?Either will work, the hollow block will take up less room in a pocket since its hollow core. I'd get both and try them both, you may prefer one over the other. They aren't very expensive.
The 35cm long enough? Yes it is

Thanks


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[sojourner]

Sorry if I missed it in this thread, but why not there Kong Duck? Just curious, thanks.

Kong Duck is not designed to be used as it is for saddle hunting. Like rope man.


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[pesqimon]

Personally, at 22kN, I am not worried if the distel and no sewn eyes lowers strength by x amount. My armor-prus is about 22kN and I have that in a distel and no sewn eyes.

That’s 22kN in its loop configuration. The cord itself must be no more than 15kn, I’m guessing closer to 11kN. So if it’s 11kN, you double it for a distel and then take away for the poachers knots, you wind up somewhere around 13-15 kN.

Someone check my math?

What’s the armor-prus?



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[mattsteg]

That’s 22kN in its loop configuration. The cord itself must be no more than 15kn, I’m guessing closer to 11kN. So if it’s 11kN, you double it for a distel and then take away for the poachers knots, you wind up somewhere around 13-15 kN.

Someone check my math?

What’s the armor-prus?



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Depends on how well jammy cord works for poachers. Maybe it's their 5.5mm aramid cord, which appears to be a really nice choice. They suggest that for prussiks, 18kn cord strength, 20kn in a tied prussik loop. Can order from an italian place for 3 euros per meter.

 

[sojourner]

That’s 22kN in its loop configuration. The cord itself must be no more than 15kn, I’m guessing closer to 11kN. So if it’s 11kN, you double it for a distel and then take away for the poachers knots, you wind up somewhere around 13-15 kN.

Someone check my math?

What’s the armor-prus?



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22kN


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[sojourner]

Depends on how well jammy cord works for poachers. Maybe it's their 5.5mm aramid cord, which appears to be a really nice choice. They suggest that for prussiks, 18kn cord strength, 20kn in a tied prussik loop. Can order from an italian place for 3 euros per meter.

I received reply that they needed more info. I explained distel and arborists / tree hunters being tethered to a tree. Gave pic and explanation of my existing bluewater/armor-prus setup.

Just waiting to hear back from them on my response.


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[sojourner]

Based on their response, I may buy a 50 length and try a klemheist with the sewn end. Or keep it as it is.

Interesting to note would be that the jammy may be same final strength as my armor-prus. Both configurations are the same.

I know I can get armor-prus with sewn or spliced eye to eye. That may make it stronger than my poachers connection to biner.


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[ImThere]

Kong Duck is not designed to be used as it is for saddle hunting. Like rope man.


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lots of guys using a kong duck (@redsquirrel) and a rope man certainly isn't designed for saddle hunting

 

[Jbiehn]

Why not just a regular prusik? Too tough to loosen/adjust?

 

[mattsteg]

Based on their response, I may buy a 50 length and try a klemheist with the sewn end. Or keep it as it is.

Interesting to note would be that the jammy may be same final strength as my armor-prus. Both configurations are the same.

I know I can get armor-prus with sewn or spliced eye to eye. That may make it stronger than my poachers connection to biner.


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Cool. Beal's website (other than the page for the 5.5 aramid cord having the wrong info on it...) seems a lit more upfront and specific about recommendations than e.g. sterling's. hhopefully that extends to providing less "lawyerly" advice and feedback.

Maybe it'd be worth it to import some of that cord?

https://www.oliunid.com/beal-aramid-semistatic-cord-kevlar-5-5-mm.html

Beal is incredibly specific in recommending it for friction knot use.

 

[Mschmeiske]

Can you use oplux for a prusik on larger rope? Or is the stealth harder and wont bite/grip as well for any reason?

 

[Islandshooter]

lots of guys using a kong duck (@redsquirrel) and a rope man certainly isn't designed for saddle hunting

Yep, used a ropeman 2 with a rock harness linesman's, ropeman 1 on saddle lineman's and now a Kong on my oplux lineman's. Prusik/tender on my Tether with a backup. Besides, lineman's is not "fall restraint" anyway.

 

[mattsteg]

Why not just a regular prusik? Too tough to loosen/adjust?

Distel (or klemheist) is infinitely easier to use. Just be sure to test and tweak at ground level and tie a stopper knot (as with all gear). I've specifically noticed a marginal distel configuration (or any easy release friction knot) may grip fine if the tail was slack, but slide if there is tension on the tail. So test well.

 

[sojourner]

lots of guys using a kong duck (@redsquirrel) and a rope man certainly isn't designed for saddle hunting

I will never go back to ropeman and will not go to kong Duck. I don’t believe they are correct tools for what we do. And I don’t have confidence in using them. That is just me though.


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[redsquirrel]

lots of guys using a kong duck (@redsquirrel) and a rope man certainly isn't designed for saddle hunting

I've used a duck for a few years, now I'm using a ropeman2 for the second year in a row. Neither is designed for being the sole life support device, I think that is what @sojourner was saying. Anyone who chooses to use it as so should at least know that. I've been backing up my ropeman2 with a prusik since last season. I don't think it's necessary, but it's stupid easy to do.