This Ultra-Efficient Bike Has No Chains and No Derailleurs

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A new chain-free and derailleur-free ultra-performing bicycle was introduced this week by CeramicSpeed at the world’s leading bike trade show Eurobike in Germany and it blew audiences away. The impressive novel prototype, called Driven, won the coveted Eurobike Award beating 365 other entries. 

The most efficient drivetrain imaginable

“Our objective was clear; to design the most efficient drivetrain imaginable. Partnering with the Mechanical Engineering Department at the University of Colorado, we have created a drive shaft concept that utilises 21


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