Wilier Triestina has completely redesigned it's flagship Zero.7 road bike for 2015. Building on the previous Zero.7, the new version is claimed to have improved aerodynamics, increased strength and stiffness, refined design, and advanced manufacturing processes, while remaining under 800g (750, size M) for the frame.
The new bike will be available at retail in the US this fall, with frameset (frame, fork, seatpost, seat clamp, headset) pricing set at $5,000. Complete bikes are available with either Shimano Dura Ace ($9,500) or Campagnolo Super Record ($10,500) component selections.
Key new developments include an integrated fork and virtually lengthened headtube, Wilier say they have been able to improve the Zero.7's front end stiffness and strength as well as aerodynamics, without incurring a weight penalty or increasing effective headtube length. The headtube, which encloses much of the upper portion of the fork, provides increased surface area for the attachment of top and down tubes, and the fork aligns with the frame for better airflow. The fork blades and underside of the crown draw from the aerodynamic shaping and technology developed for Willier's Twin Blade time trial bike.
Meanwhile a refined carbon molding system further reduces weight and increases strength. Wilier have refined their bladder molding process to include thermoplastic inserts. This results in even pressure within the mold, which results in a higher quality frame with cleaner internal tube finish.
The Zero.7 also now cleanly routes brake and mechanical or electronic drivetrain cables/wires internally for a cleaner appearance and better aerodynamics. The system has removable ports at the top tube (rear brake), as well as the downtube, bottom bracket and drive side dropout to facilitate easy routing of cables or wires. In the instance of electronic drivetrains, the wiring follows along with the rear brake cable as it enters the frame, making for a clean setup, rather than having cables and wires entering at multiple points on the frame. Special attention was also given to the internal cable routing at all points to ensure that cablesdon't vibrate against the frame.
Continued from the original Zero.7 are SEI film and BB386EVO. SEI (Special, Elastic, Infiltrated) Film is utilized between layers of high-modulus carbon fiber, in place of the mid-modulus fibers that would typically be used. This has the effect of saving weight and also the benefit of increasing frame strength while allowing for a significant gain in vibration damping.
BB386EVO, developed in conjunction with FSA, enables the use of all major crank/bottom bracket standards, while increasing frame, crankset and bottom bracket stiffness relative to other designs. It does this by pushing the bottom bracket bearings farther outboard, which simultaneously allows for a larger bottom bracket shell interface for the downtube and chainstays.
Also continuing is a key Wilier innovation: asymmetric chainstays. This enables drivetrain forces to be effectively managed by the frame while still keeping weight to a minimum and enhancing stiffness and ride quality.
More info: www.wilier-usa.com