Here is a not I developed for climbing and mountain rescue.
I would appreciate any feedback.
http://www.milesgear.com/BowlineCinch/BowlineCinch.html
Thanks,
Dave
Dave, welcome to the scene!
Regarding this knotted structure, I'm not happy with a few things
about it:
I find the tuck of the
structure's tail to be insecure
(yes, so it held to break in a test, but, still, I don't like it's
too simple pass-through in
this knot (
bowline )).
And I'm not happy with how the reeved tail loads the knot.
As I understand your desired structure, you want a small eye
at one end and an adjustable eye (essentially) for the remainder.
And you want the structure to be self-locking (as opposed to there
being a tie-off step).
It occurs to me that one could use a bowline-terminated end
but then bring the "tail" (of the structure --the S.Part of the
bowline, as you show) up through a larkshead/Girth Hitch
through the 'biner and back down through (so, twice through
the larkshead); the tail will now be twice-nipped by both of
the two loops of the larkshead. This seems to slip a bit as
tension is built and the loops tighten.
I know of a (what I call)
"symmetric Fig.9" eyeknot in which
this pass-through of a tail seems to be well nipped if loaded qua
eyeknot (and not end-2-end loaded or ringloaded).
And the structure that Roo gives as a "Slippery 8" would suit this
task better if the tail is reeved through in the opposite direction
(which I name "Quick8"), AND you make the Fig.8 a Fig.8 eyeknot
to start with (replacing your YoBowl). This seems well secure and
easily adjusted and reasonably easily untied, I think, given the
extra strand running through the knot.
And one could try the same thing but with the tail run up around
the 'biner and then brought back into the knot (nice the the Fig.8
is the same "comin' as going'", for this). It seems that this should
be slightly stronger, but ... --you're not going to be breaking ropes.
Btw, is that Bonati 'biner (w/orange (& red-taped?) gate)?
--looks similar but differently stamped to an OLD 3_000kg fat
one I have.
Cheers,
--dl*
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