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  What is Slacklining?      
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  Basic Slackline Systems      
  Technical Analysis of Slacklines      
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Slackline Systems

 
Simple Slackline Setup
Simple 3:1 System
3:1 System with Release Hitch
9:1 System
 

Simple Slackline Setup

One of the simplest slackline setups requires only two carabiners on the tightening end. I am not exactly sure of the mechanical advantage of this system, but it is sufficient for waist-high lines of 20-30 feet if you are setting up alone, and maybe up to 50 feet if you have a couple people to pull on the line. An additional z-pulley on the end of the tensioning system makes it possible to tighten even longer lines easily.

The premise of this system is to use successive wraps of webbing to hold the tension in the system. I have often heard it referred to as the primitive system, but to avoid any implication that the setup is inadequate in any way, I prefer to call it a simple setup.

Begin with the non-tensioning end of the slackline anchored. Set up an anchor for the tensioning system, and attach a carabiner to the anchor.

In all of these pictures, the tensioning anchor is to the right and the non-tensioning anchor is to the left.

Clove hitch a carabiner to the slackline, about 5 feet from the tensioning anchor. If you are concerned about undoing the clove hitch after walking the line, you can use two carabiners together and then pry them apart when you are done. However, I have never had any trouble loosening the clove hitch from a smooth locking carabiner. 30
Pass the webbing over the anchor carabiner and pull it back towards the clove hitched biner. 31
Pass the webbing through the bottom of the clove hitched carabiner, and back toward the anchor. 32
Pass the webbing through the top of the anchor carabiner, and back towards the clove hitched biner. Tuck this new pass under the first pass. 33
Pass the webbing through the bottom of the clove hitched biner and back towards the anchor. Tuck this final pass under the first pass. 34
Tension the line slightly, lock all biners, and adjust the height of anchors and tree friendlies as necessary. Then pull the line to the desired level of tightness. (In this picture, the tensioning system is to the left.) 35
To loosen the line, simply pass the end of the webbing back through the top of the clove hitched biner and pull it from underneath the previous wrap. There should be no snapping, as the anchor biner will still hold the line. Do the same thing, a little more carefully, at the anchor biner and the line will come loose.  
If you can't get the line tight enough, it is a simple matter to set up a 3:1 pulley system on the end of the webbing. This should allow tightening of medium-length lines. You may want to use a release hitch in your system if you are making it very tight. 36
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Happy Slacking!

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