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Tethrd Phantom’s Bridge Knot

DelaWhere_Arrow

DelaWhere_Arrow

Well-Known Member
SH Member
Joined
Jul 16, 2019
Messages
2,595
Location
Delaware
Hey y’all, been a while since I’ve posted but I was looking at the Phantom saddle and though it’s quite cool, I noticed some things that rang my safety alarm: the Amsteel bridge is adjustable with a prusik of exactly the same diameter and material. Is there a climbing instructor, arborist, or anyone else who can explain why the conventional wisdom of the 1) the prusik being of a smaller diameter than the main line, and 2) never using a prusik on hollow-core rope, especially slippery-ass dyneema, have been subverted for this saddle? Am I overlooking a key piece of safety built into the saddle that the research hasn’t led me to? This seems like a (few) deaths waiting to happen, especially if people keep trying to throw RM1s on their dyneema bridges to cut down even more weight or bulk or whatever.
Help me, Arbor-Wan Kenobis...you’re my only hope of understanding.
 
The bridge on the Phantom is spliced all the way back through itself so it’s essentially not a hollow core rope anymore. The prussic is made from 3/16 spliced continuous loop and the main line of the bridge is 1/4” spliced back inside and is a little less than 1/2” final diameter. It was fully drop tested and the prussic slid less than 1/4” with a 300lb dummy falling 6’. It works very well!


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flinginairos said:
The bridge on the Phantom is spliced all the way back through itself so it’s essentially not a hollow core rope anymore. The prussic is made from 3/16 spliced continuous loop and the main line of the bridge is 1/4” spliced back inside and is a little less than 1/2” final diameter. It was fully drop tested and the prussic slid less than 1/4” with a 300lb dummy falling 6’. It works very well!


Sent from my iPhone using Tapatalk
Click to expand...
That’s pretty slick!
 
I made one for my Aero Kestral .
 

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cspot said:
I know mine bites pretty hard. Once it has been loaded, I have to work it a bit to get it to loosen back up if I want to move it. It stays very well.
Click to expand...
I just got my Phantom saddle and am new to saddle hunting. I've tried it out a bit and so far I cannot get the amsteel prusik to let go enough to adjust my bridge length. It will not break or budge at all under under full or partial load. I'm thinking about replacing it with a good 8mm accessory cord, or maybe the Sterling hollow block, or a rope man. Anyone have this problem or replace the amsteel prusik?
 
Redoak47* said:
I made one for my Aero Kestral .
Click to expand...
I’m about to make mine, from what it looks like I will be making it exactly like yours. Quick question, do you make the continuous loop a part of the saddle by making the amsteel loop go through the bridge loops? I’m sorry if this is confusing but I’m not quite sure how to explain what my question is, hope it makes enough sense to respond. Thanks!
 
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