There is a whole bunch of slipped, quick-release hitches (and even loops like slipped bowline). Some of them seem fairly secure (as in slack or slip resistant, forget the slipped nip insecurity for a second). I have been recently a little disappointed with the relatively easy jamming under medium load of what used to be my favourite slipped hitch and, as a result, I’m trying to figure out a better option.
Could anybody suggest what could be a good candidate for it?
The requirements are that it needs to work as a ring or small diameter spar hitch of some sort (they are probably the easiest to jam), it needs to use just a single pass through the ring or around the spar (no round turns or Backhand/Munter type wrapping to reduce tension on the hitch), it needs to be quick-release which doesn’t jam that easily, and also secure enough to resist slack and cyclic loads.
Good question. I don’t really have a specific application in mind other than looking for a general alternative to this hitch, which fits the bill except for jamming under some 20% MBS in the procedure I used - described earlier in the same link.
Some pretty specific points. Not sure of all reasons behind qualifications,
but mr.Ashley shares several times Backhand/Munter type can be single pass to dbl.bearing, and offers to reduce chafing on small hosts as well, counting towards long term strength.
Dan Lehman uses that here in a very clean release, strong, minimal hitch.
Slip bight kinda increase stiffness of Backhand keeps it from inverting to normal center pull(?) as usual greatest loaded (alone this is a good rigging hold too, doesn’t take much pressure on center to keep from inverting to normal)ropePart of Backhand, and this bight for Backhand around rope is not at bottom of host towards gravity load with this .
So not sure if that reverse strategy puts this then in the scope for your project.
Double Bearing can reduce chafe in especially small hosts, as possible target here.
The sharpest primary arc is buffered behind host frictions and arching.
Used mostly on spars ; but definitely have used on carabiner and ring too.
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Have cyclically loaded with some rotation from TDC, not untie; but not tested in all materials.
to fight rotation , have buffered hits some by placing works slightly past TDC/other side than load and set there.
the few times did use that, and even tested like that then purposefully hard>> no slight rotation as before
even on carabiner or ring a fewer times, setting load pull on one side of the device and knot works rotated past TDC to top of other side of carabiner/ring type device.
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In any case, this is a fresh one for the mental and utility toolboxes.
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i got the idea for the rotation past TDC from here the ol’man again bailing us out i think: ABoK Lesson# 0465/pg.076: “Sailor’s Hitch”/un-named
Shows what we call a Sailor’s Hitch, Ashley does not name this wonder at all ! But, in may be explaining that in ?: ABoK Lesson# 1208/pg.221: Ligature/Surgeon’s knot
quips: that #1209 :
"is commonly called by laymen the Surgeon?s Knot.
But surgeons do not speak of the Surgeon?s Knot
any more than a sailor would speak of a Sailor?s Knot.?
-and then doesn’t name the “Sailor’s Knot”… (which has most exemplary architecture to some points so much as this seems appropriately named as perhaps a proudest presentation)
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The final nip will fall into the X provided when drawn up together.
This is positioned past TDC to a more buffered position on normal loading of hang in Ashley’s pic it seems. Buffered from the TDC 2x hits. This is best nip position historically thru the text, but child’s swing usage is repeated dynamic/not static !
perhaps change in strategy to that point, to carry to other architectures.
BUT most direct nip at worst angle of swing projected, wrapping tighter as swings back the other way then to full cycle then!
Am much a student of pendulum as a model of clean horizontal movement to gravity load.
(as opposed to spring of clean vertical to gravity load, both in frictionless models)
I don’t usually think of the Gnat Hitch for use as a slipped hitch, but it appeared to work reasonably well after hard load, considering all of your criteria. Only the final tuck was slipped. It might be worth trying.
The T 8 pictured goes around the rail several times. It does not seem to meet your original criteria.
I recently did a handout for my scout leaders on Quick Release Hitches. Thus, I looked in my handout for ones that meet your criteria of only one pass through the ring or around the rail. The Mooring Hitch (not Ashley’s, but what you now find on Animated or NetKnots), a Slipped Buntline Hitch [ABoK #1807], and the High Post Hitch [ABoK #1809]. All of the rest started out with two parts around.
The T 8 pictured goes around the rail several times. It does not seem to meet your original criteria.
I’m not sure, but I interpreted the above photo of T-8 as having only one pass around the object: the spar/ring is outside the picture frame on the left and the darker standing part comes from the right, wraps around this object, and the tail (now white) returns and is hitched to its standing part.
Thanks for other ideas. I was a fan of the high post hitch, but then realised that it can really jam under medium loads on smaller rings like biners. There is a modified Gnat hitch with a slipped tail tucked in a different place in the knot that holds a promise, has only one way of dressing, and doesn’t seem to jam as easily as the original Gnat especially if not dressed in a particular way.
I just noticed ABoK #1874 (in his chapter on Ring Hitches). I don’t have any experience with it, but it seems very secure. It might not “quick-release” under tension, but the Bowline-like structure (and even Bowline-like method of tying) means that if it is not under tension, you can break the “collar” at the top to make it easier to get the slipped loop out.
