Campagnolo 2011/14 Super Record Ultra Torque 11 Speed Chainset Steel Axle
Our studies led to the ESP (Enhanced Shifting Performance) ACTUATION SYSTEM, specially developed to improve shifting timing.
Thanks to the new gear design, there are now two diametrically opposed sectors specialized for upshifting, and two downshifting sectors, also diametrically opposed.
This solution makes instantaneous shifting possible both up and down.
The darker colour of the gears is the result of a new anodization system which confers greater resistance to wear and saline corrosion.
Full-carbon unidirectional-multidirectional cranks.
Hollow cranks (Ultra- Hollow Structure).
Light alloy chainrings with XPSS (eXtreme Performance Shifting System). Chainrings with hard anodization treatment.
6 pins on the large chainring.
CULT bearings (Ceramic Ultimate Level Technology). Integrated ULTRA-TORQUE semi-axles in titanium.
Bottom Bracket Type: Ultra Torque.
LIGHTNESS, RIGIDITY, SIMPLIFIED ASSEMBLY AND MAINTENANCE: ULTRA-TORQUE™.
THIS IS CAMPAGNOLO'S ANSWER IN THE INTEGRATED CRANKSET SECTOR.
AFTER MORE THAN 10 YEARS SINCE ITS INTRODUCTION THE ULTRA-TORQUE™ SYSTEM, IT IS STILL CONSIDERED, THE BEST PERFORMING CRANK-SET SPINDLE IN TERMS OF STIFFNESS, LOW WEIGHT AND EFFICIENCY OF POWER TRANSMISSION.
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.
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.
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.
Campagnolo codes :
FC11-SR093C 170mm 39/53
FC11-SR593C 175mm 39/53
FC12-SR240C 172.5mm 34/50
FC12-SR540C 175mm 34/50
FC12-SR524C 175mm 42/54
FC12-SR525C 175mm 42/55