Self-locking Trucker's hitch

[mcjtom]

https://youtu.be/1J8MuOWO0Qs

Nothing really new, but I like the 'self-locking' feature when being tensioned before the final half hitches. 

I think the reason it works is that the crossing hitch? that the tail makes on the main loop also grabs one of the legs of the lower anchor bight.  I always tried to do that on the main loop alone and it didn't work too well.

p.s. This next video shows the Trucker's hitch with 2 biners instead of a loop - the reason I'm showing it is that it kind of illustrates when the crossing hitch may work better (such as when grabbing the loop leg above or with 2 biners instead of one).

[mcjtom]

I just wanted to add that the 'self-locking' maneuver with the crossing hitch? grabbing the leg of the 'pulley' loop is working, but it creates quite a bit of friction (probably less than not grabbing the leg, as the crossing hitch loop is of a larger diameter, now holding two ropes inside).  It is fitting to use a handle inside a Marlinspike hitch on the tail to tighten the construct, as the video has shown.

On the other hand, the tension is better retained this way, and 'automatic', and I was always struggling to keep it by pinching the tail bight against the pulley loop before finishing with two half-hitches, which worked sometimes but not always successfully, though the tensioning was easier.

Maybe one should forgo the purity of using just the rope and simply use the biners, if around, for the pulleys?

[Dan_Lehman]

the crossing hitch?

More like a blackwall (also "garda") hitch.

Maybe one should forgo the purity of using just the rope and simply use the biners, if around, for the pulleys?

FYI, I've suspended a 62.5# set of barbells (25+25+10+2.5#)
vs. 45# with lubricated 1cm? 1,800# cable pull tape (solid webbing)
over an oval 'biner,
and even with a nudge of momentum to get the heavier
side moving (downwards), the movement soon stopped
--"balance" !!
That's gotta be less friction (the smooth oval 'biner) than
one has with rope (though, hmm, HMPE on HMPE ?!) !

There are some tests around in which a so-called 3:1 system
of rope sheaves resulted in about 1.6:1 advantage.  And one
can sometimes see, in the back'n'forth reavings that try to
achieve more advantage some of the b'n'f passes simply
go slack --zero tension--, which shows how much is NOT happening!

As you note, in practical situations where only some good
tightening is needed, and a surge of force is possible,
the friction works to advantage in holding the gain.


 

--dl*
====

[mcjtom]

the crossing hitch?

More like a blackwall (also "garda") hitch.

That's it!  It functions like Blackwall [#1875] or Garda.  Thanks.