The Alpha Bike is an interesting prototype out of the University of Pennsylvania featuring a fully internal chainless drive that can be switched between fixed gear drive and freewheel electronically.

CeramicSpeed is seeking investors to help turn its extraordinary Driven chainless drivetrain into a rideable product with an aim to start manufacturing in 12 to 18 months. CeramicSpeed, best known for ...

CeramicSpeed developed its new DrivEn system in conjunction with the University of Colorado’s mechanical engineering department. The innovative crankset does away with the traditional chain drive, ...

Last year, we covered CeramicSpeed's Driven chainless drivetrain concept, a bike prototype that couldn't shift gears. CeramicSpeed recently announced that Driven is now not only rideable but can also ...

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