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.