Tusa X-Pert Fin

Innovative hydrofoil design and hybrid blade produce greater forward motion (lift) both on the surface and under the water. Propeller-finTM technology and super lightweight design achieve the ultimate performance with less effort.

27 Tech Reasons When using a standard flat fin, propulsion is inhibited solely by fault of design. When the leg is completely extended, there remains an angle of 27 degrees between the heel of the foot and the calf of the leg, as shown in the diagram. This 27-degree angle causes 10% of the propulsion that is produced by the kicking motion to be lost. Because the fin is angled below the body during the kick phase, the body is pushed up and forward, instead of straight ahead.

With the SF-8 fin, that 27-degree angle has been incorporated into the fin. This means that when the leg is fully extended, even though the angle exists between the foot and the calf, the fin ends up parallel to the leg. This means that 100% of the energy expended during the kicking phase is directed toward the propulsion of the diver.
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  The Illinois Institute of Diving
245 W Roosevelt Rd, Building 2 Suite 8, West Chicago, Il 60185
800-How-Dive (469-3483) ~ 630-469-3483
Map to IID Dive Center
Open: Monday thru Friday 11:00 am - 8:00pm Saturday 9:00 am - 5:00pm ~ Sunday by appointment
www.iidscuba.com ~ email scuba@iidscuba.com

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