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.
Equipment Matters Test by Dive Magazine
Tested against 6 leading split fins, DIVE said of the
X-Pert Z-3 Zoom, "Top performer - best of the bunch"
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.
Three material design for increased performance compared to standard split fins.
Patented 27 degree Angled Blade Design.
Enhanced propeller-fin technology optimizes efficiency.
Multi-compound foot pocket increases power transfer to the fin blade.
Reinforced side-rails decrease blade separation increasing stability and kick-style versatility.
Optimized blade scoops increase water channelling.
Innovative hydrofoil design that produces forward motion (propulsion) with less effort.
10% longer blade than SF-8 for enhanced propeller effect.
TUSA patented EZ and buckle system.
Colours: Black (BK), Cobalt Blue (CBL), Flo. Yellow (FY)
Sizes: S, M, L
TA-81 Fin Spring Straps
The TA-81 spring straps are a great accessory for our open-heel scuba fins. A definite upgrade to standard straps, spring straps do not need to be adjusted for size and easily slip over the heel securely when donning/doffing.
TUSA patented 27° Angled Blade Design Technology
A standard flat fin inhibits propulsion solely by fault of design. An angle between the heel of the foot and the calf of the leg remains when the leg is extended to kick. This angle causes 10% of the propulsion to be lost. TUSA’s patented 27°angled blade design employed on the SF-15 X-Pert Zoom Z-3 accommodates for this anatomical characteristic and ensures maximum efficiency throughout the kicking cycle. This means that 100% of the energy expended during the kicking phase is used for forward diver propulsion. Simply, TUSA’s SF-15 X-Pert Zoom Z-3 maximizes the efficiency and performance of a split fin by combining the 27° technology with enhanced composite materials and a revolutionary blade design.