After a year of working to improve my standard shackle which has a breaking strength of 250-260% of the strength of the Dyneema
and a fair investment in material and testing; I have reached my goal. I had set a goal of 300% breaking strength or taking the Dynaeema as far as I could take it, back when I started making these shackles.
The new shackle is not only strong but Tough. It is intended for extreme applications for use in sailing, climbing, flat line, off road or rescue
. When the need for safety
and durability is paramount this shackle will deliver. I call it my “TOUGH GUY” shackle.
This shackle made of ¼” HTS-75 Dyneema
from West Marine
broke at 29,700 lbs. force, 1,800 PSI hydraulic pressure on a 5” diameter cylinder. That equated to 306% of the strength of the Dyneema which has a breaking strength of 9,700 lbs.