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2008 The Ultra-Torque™ era
 Lightness, rigidity, simplified assembly and maintenance: Ultra-Torque™.
This is Campagnolo®’s answer in the integrated crankset sector.
You will agree on the fact that the old traditional truncated cone coupling (ISO) provided great service to an army of cyclists for many decades. It proved itself to be completely reliable, even more than recent but less effective solutions. This is the reason we continued with this proven system through the 2006 season as we waited for the development of another system that would offer the benefits of systems with oversize axles and external cups but without their defects. |
MORE ERGONOMIC
Campagnolo® found a way to permanently conjoin the semi-axles of the bottom bracket to the respective crankset arms. This redesign made it possible to considerably reduce the lateral dimensions at the axle level and prevent annoying contact with the ankles when turning the pedals.
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EASIER
Assembly is simplistic: one single oversize bolt is enough to integrate the two semi-axles. With regard to torque transmission efficiency, this system is equally as effective as a single piece axle.
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MORE RIGID
Furthermore, despite the narrow side profile, we have been able to position the bearings outside the bottom bracket shell, resulting in greater axle rigidity from the increased axle diameter. This breakthrough was obtained by using an ingenious mechanical system derived from many years’ motoring experience in the rotation axle and engine shaft coupling sector: the Hirth joint.
In short , this is a joint with self-centring and self-aligning frontal teeth located in the middle of the bottom-bracket axle where the ends of the semi-axles, integrated with the crankset arms, come into contact.
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“The Ultra-Torque™ cranksets are: lighter, more rigid, more ergonomic, smoother and easier to maintain.” |
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