Hello again!
I tested the zeppelin "prusik" loop for a few weeks now.
I carried it with me clipped in to a karabiner, which I use to carry my keys with me.
The zeppelin is very easy to open but it seems to be TOO EASY to open.
After several days carrying it, it opened itself due to some random friction on my hip.
Which doesn't surprise me at all; yet, do note
that I have some (hollow, nylon) binding cord
tying my keys etc. together which has been joined
by a
zeppelin knot for decades(!!) without
untying (accidentally or otherwise, I think) ! It's
tails are very short & *mushroomed* so that they
in some way effect a sort of stopper against pulling
through, and otherwise are not vulnerable to being
pushed towards loosening. So, I do respect this
knot's potential to resist untying by chance, but
it is just too *open*/loose for me to trust it in
who-knows-what-"s. happens" out-of-awareness
circumstances.
Btw, I occasionally tie various knots in my keys-etc.
clump, in small (3/16" ?) solid braid nylon (soft &
flexible, smooth), and have been dismayed to see
such things as the
grapevine bend/dbl.fishbecome loose, even though set firmly.
YMMV !!
In the end I stayed with the double fishermans but I still dont like the fact that it becomes untieable after some time.
But, again, consider placing the knot as the
crossing part of the hitch; that will reduce the
force upon the knot.
Another knot you might consider is what I'll
describe as a
reverse sheet bend --that's
the start, only; more wraps are needed.
Begin as above described, but then take the tail
around the SParts-only of both ends at least once,
and better twice/thrice. (One can finally tuck out
the tail of the hitching end (end doing the wrapping,
i.e.) through its initial turn.
(With one end forming a "U", bring the "hitching end"
across this U so that it turns
around the U's tail,
and then around and down through the U's bight tip
hole, and around the two SParts again (& again).
.:. One gets the sort of wrapping-tight security of
the
blood/grapevine knots from the "hitching" end's
turns, but then there's a loosening mechanism that
should be amply effective at the forces expected ::
pull the U-part's tails apart, to pry out a bit of the
hitching end's SPart --enough for you to then work
loose more material, this U-part's tail, and then
the wraps.
I use this often, for its ready slack-security via the
tight wraps, and the pry-loosen aspect (and it's
a natural for diff.-sized ropes, within reason --the
hitching end being in the thinner rope).
)
--dl*
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