Tech of the week: no chain, no dimples, no zip

More new tech from Eurobike and the Tour de France in the last week

New drivetrains and new bikes

The star of the Eurobike show was CeramicSpeed’s chainless, derailleurless drivetrain. Running with a shaft drive and 21 of CeramicSpeed’s low friction bearings, the friction-busting expert says that the system is over 99% efficient.

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