Zipp’s 202 NSW Tubeless Disc-brake wheelset packs a heavy load of performance into a light and nimble wheelset. This wheel flies up the toughest climbs, shaves time off descents, and handles deftly off pavement. For aero performance, Zipp’s ABLC Sawtooth™ dimple design extends to the rim’s edge. The 202 NSW Tubeless Disc-brake is optimized for wide tires with lower tire pressure to meet the performance needs of modern riders in search of low rolling resistance and high compliance. With an internal width of 21mm, the wheelset is well suited for rough roads and tests fastest with a 28mm tire in the majority of wind angles.
The imprint graphics not only provide valuable weight savings, but also enable a unique and durable application of the four letters most feared by the competition in cycling racing: Z-I-P-P.
zipp´s 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 ahigher natural frequency, thus decreasing the laminar bubble effect on the aerodynamically shielded side of the rim´s profile to further reduce high yaw drag and improve crosswind stability.
Zipp Cogniton Hubs
The new Cognition Straightpull hubs, made of high-strength Z310.9 aluminium are extremely lightweight and offer a new freewheel body technology. The Swiss stainless steel bearings are the most precise in the entire industry. Specially developed hub bodies also distribute the load of the spokes more evenly over a larger surface to prevent torsion in the bearing area. The result is lower resistance and greater durability. The 17 mm hub axles are extremely stiff. The hub itself is milled using modern EDM technology so that 50 percent harder materials can be machined 20 times more precisely. The Cogniton hub series with Straightpull spokes offer an even higher lateral stiffness.