The tendency of these systems to chafe the wire forestay, as they spin around it, at the joints and at the end of the extrusion can cause damage leading to snagging and unlaying of the stay. This has caused the loss of many a rig over the years. All of these problems are eliminated by the use of a one-piece solid rod. Stearn systems are still in use on thousands of yachts worldwide, and although new systems are still being made, we frequently get calls from people who bought a used one or who found a system abandoned in a boatyard. Twinstay systems can easily be converted to furling systems with the addition of a Dynafurl conversion kit.
Less stretch means less headstay sag and greater sail efficiency.
Solid rod is much stronger and more impact resistant than hollow systems. Even the travel-lift can't hurt it. Type 316 Stainless Steel rod end components are machined from solid bar for strength, reliability and a virtually permanent life span. End fittings are permanently attached to the rod, but are reusable in the event that a system needs to be shortened, or the rod replaced. This maximization of innovative design engineering and careful selection of materials results in a furling system that, 25-years after its introduction, still weighs less than any system available today.