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Oplux / rescue tech | Custom length 7mm vt prusik from Bluewater ropes.

davecarp said:
Confirmed with Blue Water today they will be producing about 2 dozen 24" 7mm VT prusik cords. I should hopefully have them in less than 2 weeks... Not exactly the easiest folks to deal with, but ultimately they are making good on it.
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Awesome! Thanks so much for doing this.
 
Still a work in progress. I've got so far as to provide them with my CC Info for the custom run. I had planned to re-contact them this week to see where we are at. they certainly aren't making it easy to spend my money that's for sure.
 
sojourner said:
Since last year (when I purchased oplux for lb and tether), I have been going back and forth to find the best/safest friction hitch cord. I have tried oplux, 6mm trc, and now a 7mm vt prusik.

Pic shows from left
Trc in a distel = 15.5 kN mbs - knot weakness
7mm vt prusik in a distel = 22.6 kN
Jammy in a klemheist = 22 kN
Cut jammy in a distel = 22 kN - knot weakness

Initial usage of 7mm vt prusik in distel is very good. But I think that if the length was shorter, it would be ideal for 8mm rope (taking less wraps to hold tight and release easily with a tender).

I reached out to BlueWater ropes asking about custom length.
They will do that for me, but charge $30 setup charge, and adjust price per each based on length (original costs around $25). And I have to order at least 10.

I am going to do more testing this weekend and determine a length based on a good number of wraps for a distel hitch.

With that, and a price I find out next week, would anyone commit to purchasing a specific amount from me (I would not profit on this, just get the first group purchase).

I would be definitely in for 2 (maybe 4), but definitely 2.

If all goes well, maybe [mention]DanO [/mention] could run with it and keep all us 8mm rope users supplied. Unless he wants to take the reigns right now.

Also [mention]Red Beard [/mention] will be happy, there is no glow under a black light on the vt prusik.

Thoughts, interest, concerns, commitment?











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I’m a little late to this post but blue water also makes titan rope, which is 5.5 mm. It’s poly cover and dyneema core with a straight pull MB’s of 3200 lbs. you can buy it for fairly cheap and tie it into a normal prusik loop using a triple fisherman’s knot. About 44” and you can get a 12.5” finished loop that holds unbelievably well on oplux. I’ve been running it for a while now and I love it. I mean the 6mm TRC from sterling is good too but that titan cord is the bees knees
 
Fl Canopy Stalker said:
I’m a little late to this post but blue water also makes titan rope, which is 5.5 mm. It’s poly cover and dyneema core with a straight pull MB’s of 3200 lbs. you can buy it for fairly cheap and tie it into a normal prusik loop using a triple fisherman’s knot. About 44” and you can get a 12.5” finished loop that holds unbelievably well on oplux. I’ve been running it for a while now and I love it. I mean the 6mm TRC from sterling is good too but that titan cord is the bees knees
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By the way in loop configuration titan cord with a triple fisherman’s knot has a MBS of slightly over 4000 lbs!
 
mtsrunner said:
7mm is 87.5% of 8mm. Most sources for friction hitch safety/compatibility state the hitch line should be 60-75ish % of the mainline. I would definitely be more interested in reaching out to Sterling (6mm TRC) for the double sewn eye. Possibly Beal for the 5.5.
I understand the desire to keep the kN up there above 20, but I always have my friction hitch backed up anyway. It’s a trade off in benefits/risks for sure.


Sent from my iPad using Tapatalk
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Most say 55-80% of the main line for friction hitches. The exception is the Blake’s hitch which can be tied using rope of the same diameter.
 
davecarp said:
Confirmed with Blue Water today they will be producing about 2 dozen 24" 7mm VT prusik cords. I should hopefully have them in less than 2 weeks... Not exactly the easiest folks to deal with, but ultimately they are making good on it.
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Is ther
davecarp said:
Confirmed with Blue Water today they will be producing about 2 dozen 24" 7mm VT prusik cords. I should hopefully have them in less than 2 weeks... Not exactly the easiest folks to deal with, but ultimately they are making good on it.
Click to expand...
Just curious why 7mm? Strength? From what I've researched 6mm in a basket configuration is almost as strong as the Oplux itself. Plus it holds well. Just Curious.
 
1simplemann said:
Is ther

Just curious why 7mm? Strength? From what I've researched 6mm in a basket configuration is almost as strong as the Oplux itself. Plus it holds well. Just Curious.
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The 6mm cords you have been researching must be of a different construction than the BW 7mm cord, which is a single braid. The single braids tend to flatten out providing more surface area to grip, even when made of Technora. The Technora cover with a core cords don’t grab as well as polyester or nylon and require another wrap to grab reliably, but causing more friction when not needed. Another available single braid is the Resque Technologies 6mm Probe, although it and the BW cord are weaker than the cords with high tech cores and covers.
 
Its
1simplemann said:
Is ther

Just curious why 7mm? Strength? From what I've researched 6mm in a basket configuration is almost as strong as the Oplux itself. Plus it holds well. Just Curious.
Click to expand...
probably as strong because the policy is thin diameter and when the eye is sewn, it decreases the breaking strengths on rope that thin by about 20%. A little less so on the 10mm and thicker ropes. So if you start with 5400 lbs break strength, you end up with less than 4600 lbs once you sew that eye
 
I should have clarified. this is a custom run of 24" 7mm VT prusik cords manufactured by Bluewater Ropes. The normal ones are 33" I believe. I have a couple dozen of these. I had to sell my 8 year old daughter to get them to produce these, not joking (ok not really but wasn't easy either). PM me for details.
 
sojourner said:
Thanks so much for taking up the torch!!! Are they all spoken for? If not, I would like to purchase some.
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And I don’t want to see you out money on this. If there are any unspoken for, that would cause financial burden to you, I could purchase them from you.

My last season has been a non-event with my gout. I am, with diet and exercise change, finally getting past the gout. Finally getting out and hiking and preparing for the fall.
 
[mention]davecarp [/mention] PM sent with request for PayPal info. Thanks!!!
 
Hi all,
Just stumbled unto this thread as I was searching for dimensional standards for Prusiks. I have a 11.4mm Samson Predator Lineman and Tether based on the info above, 11.4mm - 40% = 6.84mm thickness is probably a fair middle of the road thickness I would want for a prusik? or do I have this backwards? Also in reading this thread, I'm wondering if 24" isn't kinda long. I've seen sewn 19" prusik (continuous loop) and something else called a 13.5" Auto Block Cord (continuous loop).
 
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