Ceramic Speed Driven chainless drivetrain is 99 efficient
CeramicSpeed used Eurobike to show off its Driven 13speed pinion drive shaft concept, which swaps derailleurs and chains for a drive shaft that it claims provides 49 less friction with a near 99 efficient drivetrain. We popped a camera in front of Jason Smith, Chief Technology Officer and founder of Friction Facts, who is based out of Boulder in the US and has headed up this project.
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