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Tusa SF-6 Tri-Ex Fins
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| Featuring TUSA's unique Advanced Multi-Flex Blade made from three different materials, reducing diver fatigue and air consumption for fast and powerful propulsion. Most of the foot pocket is covered by soft material, enhancing the fit and making it easier to put on or take off. TUSA patented easy-to-adjust strap with quick release buckles. Fins with world-class efficiency, making the most of your energy. Three-material construction In 1993 TUSA introduced the SF-7700 (IMPREX fin) to the market. This fin achieves strong propulsion by combining two different materials to create an efficient water channeling action. Since it first went on sale, over 600,000 divers have used it worldwide and it has been the undisputed leader in the plastic fin market. Now, ten years later, we are moving to the next development stage. The next generation IMPREX Tri-Ex fin utilizes three different materials. First is the side rib (hard material), efficiently converting the energy of a kick into propelling power. Second is the blade (medium-hard material), increasing the efficiency of the water channel. Third is the soft pocket (soft material), enhancing the fitting comfort of the boots. The designers expanded the blade angle theory that had produced a strong propulsion force with only a light kick in the SF-8 model. A fin testing robot was used to do a computer analysis of the propulsion (speed) and electrical load when kicking. Tests were also run using real divers in a water circulating pool. After repeating these tests many times, the blade angle was set at 20 degrees, the most comfortable for the diver. A smooth shape was also created with no level differences between the foot pocket and the blade. This means that compared with conventional products, less initial load (energy) is required when first starting to kick. The excellent fit and efficient transmission of energy ensures that body fatigue and air consumption is minimized. |
More from Tusa:See the complete collection of Tusa Scuba Gear. To view all of the Fins by Tusa visit Tusa Fins.
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