LSA Adjustable Two Prusiks System
The LSA (load sharing anchors) Adjustable Two Prusiks system is a simple and effective method for pre-tensioning or stabilizing components in a rope rescue environment. It uses two Prusik hitches on a tension line to manage load placement without requiring complex devices or mechanical pulleys.
This approach is lightweight, adaptable, and easily deployed in real-world field conditions.
Understanding the Setup
At its core, the system involves two Prusik hitches tied onto a main line. Each hitch can be adjusted independently, allowing the system to take tension or slack in either direction. This makes it ideal for refining anchor positions, adjusting directionals, or stabilizing back-ties during a rig.
Because there are no pulleys or progress capture devices involved, the system relies on the proper use and placement of friction hitches and connectors. The simplicity is part of its strength.
How to Build the System
-
Anchor the rope
Begin by tying the main line securely to a fixed anchor point using a figure eight follow through or similar knot. -
Attach the first Prusik
Tie the first Prusik using an appropriate loop of accessory cord and position it near the anchor. -
Add the second Prusik
Tie the second Prusik farther down the main line, leaving enough space for adjustment and load attachment. -
Connect the load or system element
Use a carabiner to connect the operational component (such as a directional or floating anchor) to the second Prusik. -
Adjust tension as needed
Slide the Prusiks along the main line to increase or decrease the tension. Once the desired tension is achieved, monitor for security and hold.
Why This System Works
-
Lightweight and compact
It uses only rope, cord, and carabiners already found in most kits. -
Highly adjustable
Both Prusiks can be moved for fine-tuning without unrigging the system. -
Reliable for temporary stabilization
It’s especially effective when used for back-ties or as part of an edge transition anchor setup.
Best Use Cases
-
Tensioning a floating focal point
-
Anchoring a directional pulley
-
Preloading a back-tie in uneven terrain
-
Managing force balance in limited-space environments
Operational Considerations
-
Cord diameter must match the rope
The Prusik loops need to be appropriately sized for effective grip. -
Monitor for creep under load
Regularly inspect the hitches for movement, especially under variable loads. -
Use a backup if critical
In systems where human life or major load is involved, add a backup for redundancy.
Final Thoughts
The Load Sharing Anchor Adjustable Two Prusiks system delivers precision without complexity. It gives rescuers the ability to fine-tune a rope system in real time, using gear they already carry. When built with care and intention, it provides secure, flexible control across a wide range of rescue scenarios.
Peace on your Days
Lance
