My Timber hitch came loose today

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i can't sit hear and 2nd guess ye; and exactly what happened, just offer these guiding thoughts. ABoK is the book / bible of referance. Can find at ebay, might even find a .pdf around someplace(s); 1 version searchable, 1 not. i think much stored there, can drift back and forth thru to find these patterns betwixt the lines of text that is in a rawer/ undigested scripting handed down thru ages. These men too, depended their lives on lines and hitches; sometimes whether or not 100 men with no electric, nor gas made it home or died at sea depended on these things. They are shown as just do this like this; not so much why; though the commanlaities are broken to chapters, so the patterns are more discernable thru this flood/fog of everything going on!

All the Hitches shown are maid to be pulled perpendicular/ 90 degrees to the 'rail'; except the Killick type 1773, which is maid to be pulled inline/pairallell to/along the length of the 'spar'. Now spar and rail are his words, that really could be the same wooden anchor device; just pulled at different angles/placed in different relationships to gravity etc. pull. So, i think of a spar like a pillar; load hanging along length and rail as like hanging something from a 'rafter' in the ceiling/ or pulling across a rail on deck/ not along it's length. But, then the same pillar, can have a line 'clotheslined' away from it, so i focus on directions of pull as architecture, and not these names(pillar, spar, rail etc.).

The back of the Hitch / opposite the Standing is what seats the firmest into the spar. In imagery i evaluate this position as being inline or leveraged to the Standing. If leveraged/ not inline relationship; i seek a 2nd grab, and buffered loading to the Timber by a Half Hitch (both 2nd and buffering strategies served) preceding to make Killick. Now, the Timber would still be leveraged per the force coming into it from the Half preceding, but, the force would not be leveraged per the initiating force of the Standing before the Half, and has a 2nd grab, also can stay secure longer from intermittent loading and changing angles. Always think that a boat tied to a post can intermittently load, and change angles of pull on the post with the waves and tides; giving one of the ultimate tests of security.

i speak of imagery, because i just draw these pairameterss in mind, to stay between; and build and evaluate to these targets. If a picture is worth a 1000 words; this is my shorthand to myself as guide.
 
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I should have tied the timber hitch where it was on the side of the tree?

That is what I was trying to say; so that you cannot see the twists.

The loaded end should pass through the the bight and bend at least 90 degrees so that the hitch cinches down with loading.
 
That is what I was trying to say; so that you cannot see the twists.

The loaded end should pass through the the bight and bend at least 90 degrees so that the hitch cinches down with loading.

Gotcha. Hard to explain knot orientation over the web. I learn much better when I can see it demonstrated. I still think I will opt for the cow hitch when cycling loads from now on though.
 
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When I worked under another climber about a hundred years ago, he use to use the timber hitch to lower limbs. One day it came untied, and nearly took me out. When he came down, I taught him to tie a running bowline, then after work invited him out for a beer, and kicked his a$$. I NEVER trust a timber hitch. I do agree they are acceptable if the load is never cycled, but because they are so easily loosened by cycling, I never use them.
 
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