Turned Tables-Bent Line Can Help

[TheTreeSpyder]

Rob says it is called a vector pull; at the shallower angles of pull from a flat line; it is real power for or against you.

In every way and situation of taut rope is like a stiff lever; side loads leverage it; and just as in soldis, the line has to be solid enough to take the loading, to get the leverage out of it.

Here is a simple tightening tweak on just tying down a load; that shows that with all the power of a Zrig etc.; it can jsut a preset tot he real tightening, as the Zrig is used to reinforce the line to take the leveraging of the real tightening. This turns around the force threatening to overload mounts to redirects and loads such as in the Clock Hitch Thread ; and uses those forces to aid insecuring a load tighter.

Of course turning around all other lessons of how not to let something overload a line hold true too; fall back hard an fast as possible to tighten down with body weight; or pick up sharply with legs to tighhten; get the foprce and speed in there, that you usually guard against. Hold hands about 1' from chest to start, and finish with them on chest pulling line, instead of them having any give and moving farther away from chest during motion; lessening the tightening etc.

This example is of tightening down a load to see the simple workings of the way of the bent line in a different setting, then to trace it's form in what we see daily to find it working for and against us. The high numbers in Rob's charts in Clock Hitch Thread can work to our benefit.

Orrrrr something like that!
-KC

 

[TheTreeSpyder]

How to look at bent line leverage, comparing it to easier to see, common solid wood and pivot lever.

 

[TheTreeSpyder]

Another example of a tie down, that reinforces the line with the pretightening of ~3:1; to allow the line to take more pressure during using it as a lever to tighten down.

So what once was the main tightening, and a practiced pro-cedure; is now just quickly whipped on to maintain fair efficiency, impact tight without losing input force, and allow place-meants for real lever-raging intensely tight in the way of the bent line. Taking the Zrig a step further at the cost of very lil'line or time; we have maximized the situation, by easily tapping an available resource in that dang magic line that has done all kinds of other tricks to amaze me, since knowing it. It might have been keeping it's best most powerfull trick secret i see here, though i have thought that before....

Though the tiedown is another simple application, there are many times in rigging and climbing when a short burst of highpower leverage can make all the differance in the world IMLHO; Sweating in to empower a line more pre-tightening support, Final tightening, to iniate any movement of wood or body at the right moment-for that is hardest part of motion changing the inertia, to give super support or pull burst, to leverage on FirstFlexing of a hinge to force it to be stronger, compounding on top of self torquing leverage, steering a line dragging brush around something, 'emergency' line impact power etc.

One of the most important things to do is to confidentally load the line hard to tighten/reinforce it prior to leveraging it for the high returns. Just like using a board for leveraging, the line must take the leveraging without much bend to deliver the power. For me it took a while to think of the line as solid, but it is within a range per it's loading IMLHO! By the numbers that Rob, Dave, Joe etc. have posted; there is simply high leverage potential sleeping in a simple line to be awoken. Many times we see that as warning of making sure we don't load the line wrong and call this up agianst our own efforts and equipment; but just as many times as it can threaten to ruin your day, it can offer to make it easier too; by waking up the way of the bent line at the right time; opening the system to it's forces, and using that point of entrance suddenly at the right time; to further add impact to the leveraged output.

Orrrrrrrrrrr something like that!
-KC


Eye 2 see mys-elf as a student of my stupidity;
maybe just trying to prove it more often lately!!! :=)

 

[Mark Chisholm]

Wow, those diagrams look like a lot of hard work to produce. Thanks for sharing them.

 

[TheTreeSpyder]

Thanx; this one is a rerun; i use the free Windows built-in MSPaint for about all of my crayoning around!

Here is one usual point of using the illustrated principal in real tree rigging. From the lore of massive shipping boats for centuries relying on many rope and knotting skills for hundreds of lives, comes use for this bent line as de-scribed by Brion Toss as "Sweating In" a line tighter, for this extra purchase of power. This can be done as the finish to any tight line, compressing jig etc., as long as you have a 'friction barrier/buffer' to sneak and hold your sweated purchase from the line, so it didn't equalize back into the mainstream of a line. So while a pulley as addititional redirect etc., and another point to leverage another space in the line; you can't hold the sweated purchase on the other side of the pulley(that ya couldn't have pulled without sweating in), without pulling it across friction to hold the line purchase, thereby the mainline is tighter, giving more support, steering, less impacting etc. because of the support/pull force you have loaded in the line system.

In using a Porty and compression rig or GRCS etc., overhead rigging without lifting, pretightening can load the line with immense force. with high leverage we sometimes can come close, especially if load sets itself on a tighter line while hinging. Without lifting, the force of line support only has to equal the load to handle it lightly.

If before tearoff, you get the line to carry about all of the weight IMLHO it can change the mechanichs and become the pivot instead of the hinge carrying that job. If that line hitches on the load at about the C.o.B. (just a lil'short of it is best i think mostly), then the line carries the balanced weight and the hinge's job is very easy, as it just directs 'noses' the balanced load around.

So this bent line technique is very usable here, high gains from the intense leverage available quickly in the line. Another quick, high impact use of the way of the bent line is building that quick, high leverage to use as in Stronger Hinge w/Quick High Force (FirstFlexxxing) Thread.