CeramicSpeed, best known for its friction-reducing drivetrain components, first teased Driven back in 2018, showing off a concept that combined a shaft with a unique method for transferring drive that featured bearings engaging with gear teeth.The Driven drivetrain features a dual-pinion design.
source.image: ceramicspeed
Comprising of a fixed front pinion and shiftable rear split-pinion. The two pinions utilise a total of 21 CeramicSpeed ball bearings that create the engagement interface of the drivetrain. This is a patented engineering novelty that makes the Driven drivetrain revolutionary.
source.image: ceramicspeed
To achieve ultimate efficiency, Driven utilises 21 CeramicSpeed hybrid bearings. Each bearing contains unique ceramic balls that are 58% lighter and 2.3 times harder than traditional steel, increasing the speed of the bearing by 30-50%. Each bearing works in harmony to deliver greater power, playing a pivotal role in performance and speed.
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The Driven drivetrain is controlled by wireless electronic shifting. The hollow carbon fibre shaft houses a rechargeable battery, an actuator and the shift mechanism that controls the shiftable rear split-pinion.
The shiftable rear split-pinion utilises a “step and follow” shift pattern. One half of the pinion is engineered as the lead, always stepping into position when free from the cassette to engage into the next gear. The trailing half follows when free from the casette. Completing the shift.Watch the video from Singletrack Magazine:
Seamless shift alignment is possible through a Torque Decoupler located on the trailing half of the split-pinion. This is made up of two spring loaded bearings that have been purposely engineered to deliver precise meshing between the pinion and the cassette.
