Bicycle works without a chain

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Most bicycles are driven by a chain. The chain transfers power from the pedals to the drive-wheel of the bike, propelling it forward. Chains are efficient and allow the use of external gears, but they stretch as the pins and rollers in the links wear and lengthen over time. Chains also rust and require continued lubrication and maintenance. Many alternatives have been through trials, including belt drives and treadles. Now, Danish company CeramicSpeed has developed a bicycle powered by a drivetrain, dubbed Driven. The company developed the new Driven drivetrain together with the mechanical engineering department at the University of…

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