Over 5 years of research and development brought the highly regarded
and best-selling SF-8 X-Pert Zoom split fin to market in 2003. TUSA
redefines the fin market again with the introduction of the SF-15 X-Pert
Zoom Z3 for 2009.
The SF-15 further improves upon the performance, features
and design of the SF-8 with the incorporation of 3 materials,
10% longer blade length, enhanced propeller-fin technology,
reinforced blade rails and optimized blade scoops. These new
features along with TUSA's patented 27 degree Angled Blade
Design and EZ strap buckle system make the SF-15 THE fin for
divers
TUSA's Angled Blade Design:
When using the standard traditional blade fin, with the leg
completely extended, there remains an angle of 27 degrees
between the heel and the foot and the calf of the leg, causing a
10% loss of propulsion. Because the fin is angled below the
body, during the kick phase, the body is pushed forward and
down, instead of straight ahead. With the SF-15 fin, that 27
degree angle has been designed into the fin. This means that
100% of the energy expended during the kick phase is directed
toward the propulsion of the diver. TUSA developed a robot that
can replicate the kick-cycle and movement of a human's leg. The
robot is able to mimic the motion of a human exactly and relay
accurate data. TUSA has been able to analyze the performance of
the fins under several conditions. The robot is able to simulate
swimming through the water using kick variations, such as a
large scissor kick with a slow repetition and vice versa. Using
the latest technology, this robot measures the energy expended
during the kick and the propulsive force that is created using
that energy. To achieve maximum performance from this fin, use
a small bent-knee kick with a light rhythm. This creates less
strain on the leg muscles compared with traditional fins,
reducing the diver's fatigue and subsequent air consumption.
Features:
Three material design for increased performance compared
to standard split fins
SF-15 X-Pert Zoom Z3
