This innovative drivetrain concept from CeramicSpeed aims to eliminate the need for chains and derailleurs to make your bike more efficient. The driven concept has been Chainless developed by CeramicSpeed in collaboration with the mechanical engineering department at the university of colorado.
source-image: CeramicSpeed
source-image: CeramicSpeed
A traditional chain and derailleur drivetrain have eight points of sliding friction where the chain bends back and forth, 2 pulley wheels and the frictional effects of cross chaining. The new concept eliminates all eight points of sliding friction. The drive shaft concept utilizes 21 CeramicSpeed Bearings to create an incredibly efficient drivetrain.
source-image: CeramicSpeed
Likewise, Driven uses a pinion style drive shaft system. The bearings transfer torque through the drive shaft from the front ring to the 13-speed rear cog. In addition, Driven produces 49% less friction in comparison to a standard drivetrain. Unlike a traditional drivetrain, Driven removes all eight points of sliding fiction.
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Thanks to 21 CeramicSpeed bearings attached to the end of a pinion-drive shaft, the drivetrain claims to have an “increased optimal efficiency of 99%” compared to a traditional chain driven drivetrain.
Driven is still a conCeramicSpeedcept, but development is ongoing. CeramicSpeed gradually disassociated itself from the project until, in 2021, Jason Smith, creator of the Driven system, left the brand and created Driven Technologies, a company with which to continue with the project and which began to seek funding through a crowdfunding campaign. The Driven concept was chosen as one of the winners of the Eurobike Award 2018.
