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The fork of the C64 has been completely redesigned, with an outer rib that gives the athlete more comfort and also increases the riding qualities (lateral stiffness). To increase stiffness and strength, we have created a special rib inside the steering tube, co-laminated with a threaded aluminium insert that actually replaces the traditional expander. The C64 disc fork is made with a special C / D shape to allow the complete passage of the hydraulic hoses inside the stem, which allows for clean lines on the surface. The front through pin, which is also 12mm as for the C60 disc, is now a hexagonal threaded type which reduces the weight of the system.
Weighing at just 355 grams, with the same shape as the disc version, the traditional brake fork accommodates the pivots for direct-mount brakes, a necessary choice to provide the space required for the use of large-section tires. The length of the fork has been increased by 5mm, a stratagem that has made it possible to create a hollow fork head, reducing the weight but maintaining the same rigidity and performance of the fork of the C60.
The dropouts are now carbon fiber, made with a process similar to metal forging.
Although it retains the same shape as the equivalent C60 conjunction, the C64 steering tube is made with a new technology that has made it possible to reduce the thickness and therefore the weight. The shape has also been revised in the central part, with the addition of a pronounced rib to increase lateral stiffness. As with the rest of the frame, the surface finish is now in unidirectional carbon instead of 3k for a further weight reduction.
Based on the experience we have gained with the Concept's steering gear, we wanted to bring that technology to the C64 model as well. The upper part of the steering has been revised, it is now made of a special polymer composed of carbon fiber, nylon and elastomer. This feature offers an added ability to dampen road vibrations, improving driving characteristics and comfort.
Inspired from the stellar shape of the C60 down tube, we have revised the lower part, now with slightly reduced width. This choice made it possible to more effectively balance the stiffness of the central area of he frame. To further increase torsional rigidity and maximize component integration, the down tube has a lowered zone near the bottle holder.
Although the C64 is not a chassis born with aerodynamic ambitions, this feature provides a clear advantage over a traditional solution. The cable clamp for the mechanical assemblies is now placed on the oblique tube in the area near the steering and obtained from the mold.