Rigging Y-Hangs

[Alkapton]

Keep it simple.    Use what everyone understands.  There are loads of alternatives but everyone understands fig 8's.  What I think is best y hang knot (decorative triple crown in the bight) is a knot I never use because hardly anyone knows it and people will look with wonder wondering if it is safe.  So I stick with fig 8 wherever possible - simples.

 

[JasonC]

Various knot types have been discussed on a variety of threads recently and whilst it is interesting to understand this stuff; surely having a few knots that you can tie reliably is the safest approach on the grounds that human error is probably more likely than rope/knot failure for properly tied knots?

<Like> 

 

[Joe90]

This was a great thread,
Its got me learning new knots, sat in the office playing with prussic cord.
Ill say I'm bettering my understanding of my workplace if I get caught....  :ang:

 

[Roger W]

Its got me learning new knots, sat in the office playing with prussic cord.

That reminds me of the caver who died while doing SRT on drugs.

He was using prussic acid...

 

[ah147]

Prussics an awesome knot. Well worth using in all three forms. I don't know the names but one the loop comes out the middle, one out the bottom and through the top loop, then another with loops top and bottom then you clip both into a biner and you effectively have a handled jumar.

This along with the trick with two biners that gives you a reasonably effective but inefficient locking pulley and an Italian hitch (I KNOW THE NAME OF A KNOT) are all really useful

 

[ian mckenzie]

I saw some fixed rope rigged as a bowline on one bolt, then the tail going up to the other bolt with a figure 8 on it.

Am I missing something... doesn't a bowline pop thru if you pull its tail and the loop in opposite directions?  Doesn't everyone tie off a bowline's tail onto its loop to avoid it's being tugged?

 

[ian mckenzie]

OK I tried it, and I see now that as long as the standing rope is weighted, the bowline cannot come undone.  It could only happen if you seriously weighted the tail inbetween the two knots (cowstail clip-in?).

 

[Chocolate fireguard]

I saw some fixed rope rigged as a bowline on one bolt, then the tail going up to the other bolt with a figure 8 on it.

Am I missing something... doesn't a bowline pop thru if you pull its tail and the loop in opposite directions?  Doesn't everyone tie off a bowline's tail onto its loop to avoid it's being tugged?

That was my first thought , but it was wrong - I had to get a bit of rope and tie it as Ian described before I realised.
Pulling the tail and the live rope in opposite directions, which is what would happen if the first bolt fails, only seems to tighten the bowline.
It`s pulling the tail and its side of the loop in opposite directions that pops the knot.