One way to have your 8 and eat it too,
is the Lehman8 --to wit:
(see Reply #9 at https://igkt.net/sm/index.php?topic=3133.0
I designed this eye knot expressly to have whatever the
magic was that made the fig.8 so strong AND the ease
of untying (via a collar) of the bowline --sorta succeeded.
Here's one informal report:
I loaded both the Zeppelin Loop and the Lehman8 to slightly greater than 50% MBS
(~100kg in my stiff 3mm braid).
Both knots did not noticeable slip and were easily untied after this high load.
...and this is why I began writing this paper of mine.
I have no clue how that knot is tied from the picture!
There are 4 lines exiting the nub [:]
(Up), (Right), (Down Left Side), (Down Right Side).
My best guess is that it is a bowline with the S.Part in the Up position,
the ongoing eye-leg in the Right position,
the returning eye-leg in the DLS position
and the tail in the DRS position.
This makes it a double bowline with the working end,
post collar, returning only through the secondary nipping loop
and then performing an "end bound" behind the ongoing leg
with the tail following the returning eye-leg toward the harness.
Well, the image is defensibly ambiguous, though
that's quite a swing for the outgoing eye leg(!).
But the context was of using a
fig.8 base which
is amply clear in the adjacent knot's orange rope.
So, Up is SPart, Right is tail, DLS is outgoing eye leg,
and then I --basing judgement on one assertion of
stronger version of
F8 being with *exterior* strand
loaded (and inferring that this resulted from its bearing
into the twin/interior strand and off-loading force over
a fair distance gradually)--
sought to put in such a part for the SPart to bear into,
and that you see means that the DRS is the returning
eye leg reaching in to turn towards viewer adjacent
to the (and so supporting the) SPart,
then wrapping around (and making an
overhandin more of a stopper orientation) the eye legs for a
squeeze and out (into Right field). (Set by tightening
this
overhand so to give good slack-security AND
to have a solid lump for that SPart to bear against.
But, again, doing some imagining of other ways that
knotted tangle might be connected ... can sometimes
yield a nice surprise! (E.g., I discovered a nice mid-line
BWL this way : cut off returning eye leg to leave now
a new tail and connect to old tail.)
> Spart
I refer to the S.Part as the belayer's line up to the point
where it is forced to curve as it becomes the primary nipping loop.
As far as I can tell, this is the definition.
Hmmm, I'd say you've gone indefinitely long,
in that my "SPart" is of the knot, not of the
great wide world beyond, and indeed
of the
knot and not of things YET TO BE & BECOMING
a knot(!) --more the traditional sense.
And I've mused about a regard of SPart to be
up to the point where force is so low that it
could be damaged w/o much consequence
--but isn't that a problematic criterion!
--dl*
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