Zipp 454 NSW Carbon Clincher Front Wheel 2019

Zipp 454 NSW Carbon Clincher Front Wheel. The Zipp 454 NSW Carbon Clincher Front Wheel offers cyclists the greatest aerodynamic balance, cross wind stability and the exceptional drag reducing performance of SawTooth and Hexfin technology, combined with the legendary rim brake performance of Showstopper technology Speed, Control and Consistency. Zipp engineers studied what made things move fast in nature and what caused their efficiency to be so successful and how nature solved similar problems such as speed, control, consistency. Zipp took inspiration from the humpback whales fast and smooth movements thanks to the special features on the leading edge of its pectoral fins and the unique micro texture of a sharks skin surface, which gives it the ability to glide effortlessly through the water; experiencing minimal drag. These features are the key to the success of the 454 NSW wheels, only Zipp has fine tuned the rim surface to provide this exceptional level of efficiency as an aerodynamic property opposed to natures effectiveness underwater Features Hub ModelCognition Hub Width O.L.D 100mm Brake StandardRim Brake RimClincher Rim Internal Width 17mm Rim Depth5358mm SpokesSapim CX Ray Spoke Hole Count18 Hole Spoke PatternRadial Spoke Length Drive Side252mm Spoke Length Non Drive Side254mm Max Tyre Pressure125psi 8.62bars Dimpled SurfaceABLC HexFin NipplesSapim Secure Lock Weight690gFeatures SawTooth The name given to the Zipp NSW variable depth 5358mm rim profile. This design is the result of rigorous wind tunnel and real world testing. The rim shape takes natures elegant design solutions and combines their precise engineering finesse to deliver a wheel that performs like nothing else before. Showstopper Showstopper is a complimenting pairing of a directional, moulded in, texture with silicon carbide particles suspended in the surface resin. The current media blast process applied to all Zipp rims increases the surface roughness of the brake track providing the rider with consistent and responsive braking. In order to improve this for the wettest of rides, Zipp have introduced a moulded in groove specifically tuned for the Zipp Tangente Platinum Pro EVO Brake Pad. The grooves have been optimized to interact with leading edge relative to the rotation of the wheel of the brake pad and the four cooling channels. The leading edge of the pad and first two channels efficiently wipe water and debris outward, cleaning and drying the braking surface, while the second two cooling channels have maximum interference with the grooves allowing greater braking force than a smooth rim. The cleaning effects of the groove and pad interaction improve brake feel and consistency even in dry conditions. ImPress Zipps ImPress graphics technology prints graphics directly on the wheel, which allows the dimples to do what they were designed to achieve, to control vortex shedding and the rate at which air sheds off the wheel. Managing this is crucial to stability. ImPress graphics also give NSW a distinctive stealthy look. Hexfin Aerodynamic Boundary Layer Control ABLC The Sawtooth dimple design consists of 12 nodes that are specifically clocked to start aerodynamic shearing at a rate of 50hz at a rider speed of 20mph. Sawtooth accomplishes this by inducing small sheet vortices that shed at a low magnitude, but at a higher natural frequency, thus decreasing the laminar bubble effect on the aerodynamically shielded side of the rims profile to further reduce high yaw drag and improve crosswind stability. Hyperfoil This technological design refers to the individual nodes that are part of the Sawtooth rim design. Each of these structures feature the Hexfin ABLC dimples that stabilises handling in gusting and strong wind conditions by increasing wind vortex shedding. The dimples create a secondary vortex around the outer rim surface, which in turn heightens the wheel control and saves rider energy from being wasted Buy Zipp Wheels & Tyres from Chain Reaction Cycles, the Worlds Largest Online Bike Store.