Zipp 202 NSW Full Carbon Clincher Rear Wheel 2019

Zipp 202 NSW Full Carbon Clincher Rear Wheel. The Zipp 202 NSW Full Carbon Clincher Rear Wheel has been engineered to be the fastest accelerating and lightest carbon clincher that Zipp have ever created; all achieved without sacrificing durability. Featuring industry leading aerodynamics and braking, the 202 NSW is a pinnacle achievement in road racing wheels on this rim depth. It successfully is recognised as an exceptionally fast climbing wheel that is also exceptionally strong and durable, making it fully suitable for every area of cycling Instant Power Transfer. To push performance to the highest level, the 202 NSW rim is laced to a Zipp Cognition hub. This hub design sits at the pinnacle of Zipp hub design and drivetrain engagement; it provides instant power transfer and is a marvel in terms of rolling efficiency and durability Features MaterialCarbon Hub ModelCognition Hub Spacing O.L D. 130mm Brake Standard Rim brake RimClincher, Tubeless Ready Rim Model X32NSW Rim Depth32mm Rim Outer Width 25 4mm Max Tyre Pressure 125 psi SpokesSapim CX Ray Spoke Hole Count24 Hole Spoke Pattern2 cross Dimpled Surface ABLC SawTooth NipplesSapim Secure Lock Weight760gTechnologies Cognition The ultimate in Zipp hub technology. Every time a conventional hub set starts to coast, friction within the freehub ratchet mechanism works like a drum brake to slow the rider down. The drag between hub shell and driver body during coasting is considered as efficiency loss, especially for road wheels. High drag also can significantly contribute to chain dropping issues. The drag torque drives the cassette clockwise so the chain gets loose on the load side. The solution The rear Cognition hub with AxialClutch technology reduces drag by disengaging the ratchet mechanism when coasting. It then uses magnets to re engage once the rider starts pedalling. 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. Buy Zipp Wheels & Tyres from Chain Reaction Cycles, the Worlds Largest Online Bike Store.