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Item # ZIP0193

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Item # ZIP0193

Description

Who needs a disc wheel?

What happens when Zipp's fastest wheel gets faster? We're talking drastically faster, here. Well, it gets picked up by nearly every pro squad known to man, it stacks the starting line at Kona, and it slays the World's time trial by around five seconds. We're not kidding. For 2013, the Zipp 808 Firecrest Tubular is faster than the 2012 by around 15 seconds over 40 kilometers. Zipp made it a touch deeper, a tad wider, and far quicker. Riding is believing.

The 2013 Firecrest 808 is Zipp's most ambitious rim shape to date. Designed to control airflow, the 808 Firecrest Carbon Tubulars maintain a deeper, 82.0mm rim depth and a wider, 27.5mm maximum width. Using computational fluid dynamics, Zipp moved the center of pressure towards the steering axis to create the most stable and predictable deep-section rim on the planet. Zipp found that a wider rim offers greater vertical/lateral compliance for increased control, comfort, and rigidity. For the strength and rigidity, the Firecrest 808 utilizes uni-directional fibers to handle the tensile and comprehensive loading within the rim, and woven fibers in the spoke-hole areas. A woven silica-ceramic fabric and a woven carbon fabric encapsulate the braking and tire-mounting surfaces. The combination of fiber patterns creates the highest stiffness-to-weight ratio in Zipp production.

A number of Zipp technologies went into making the 808 Firecrest Carbon Tubular the fastest wheel in the Zipp arsenal. First, the Multi-Material Co-Molding process permanently fuses a sub-200-gram aluminum hoop to a dimpled carbon structure that acts as a leaf spring for road vibration and impact. Spokes laced directly to the carbon body give you the benefit of a carbon feel and aluminum braking. Next, visco-elastic material is inserted between carbon laminate in the rim to reduce road vibration by ten percent. Lastly, the dimples of the Aerodynamic Boundary Layer Control (ABLC) on the curved rim section work to create a slight turbulence directly above the rim surface. This creates an artificial boundary layer that forces the laminar boundary layer towards the forward part of the rim to become turbulent. This process enables airflow to remain attached over more of the rim for a longer period of time, providing a lower level of integrated drag. The drag that ABLC creates is called skin friction drag; although it's greatly increased, pressure drag (which is ten times higher than skin friction) is decreased to make the 808 Firecrest wheels faster than the competition in a wide range of conditions, not just the wind tunnel. While most wheels only enjoy minimum drag at rarely occurring yaw angles of five and ten degrees, the 808 Firecrest experiences it at the real-world conditions of 10 to 20 degrees. In fact, the 2013 Firecrest 808 is 15 seconds faster of 40km than its 2012 predecessor.

As for the build, Zipp gave the 2013 hubs a 7.5mm wider bearing stance, and a two degree cant on the non-driveside flange. These modifications not only increase the rigidity and power transfer of the wheels, but they also produce a stronger and more reliable stance while you roll. As for the hubs themselves, the front wheel uses Zipp's 88 hub, radially laced with 16 Sapim CX-Ray stainless steel spokes. At the rear Zipp went with its 188 hub and laced it 20 Sapim CX-Ray spokes -- cross non-drive and radial driveside. Both hubs roll on ceramic bearings, and they also include Zipp's quick-release skewers.

The Zipp 808 Firecrest Tubular is sold as an individual front or rear wheel. The rear wheel is available with either a Shimano/SRAM or Campagnolo compatible freehub body. New to 2013, the Shimano freehub option is compatible with the new Shimano Dura Ace 9000 11-speed shift system. Please note that the wheel does not come with a tire, but it does come with a pair of Zipp's Tangente Platinum Pro brake pads. If you think that you'll prefer another pair of pads, please visit Zipp's official website for a list of approved pads, as deviating from this list could void your warranty.

Tech Specs

Material:
[rim] carbon fiber
Rim Width:
[brake track] 26.04 mm, [maximum] 27.5 mm
Rim Depth:
82 mm
Front Hub:
Zipp 88
Front Hub Type:
quick-release
Rear Hub:
Zipp 188
Rear Hub Type:
quick-release
Spoke Nipple Material:
alloy
Skewers:
included
Axle Type:
17 mm
Brake Compatibility:
caliper brakes with Zipp approved pads
Rotor Compatibility:
no
Front Weight:
725 g
Rear Weight:
840 g
Complete Set Weight:
1565 g
Recommended Use:
time trial
Manufacturer Warranty:
2 years

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Zipp 808 Firecrest Tubular - 2013

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