Osymetric

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A crankset with a variable angle Rotor / Cervelo crank and Osymetric chain ring Rotor Cervelo crankset Osymetric chainrings.JPG
A crankset with a variable angle Rotor / Cervélo crank and Osymetric chain ring

Osymetric is a French make of ovoid bicycle chainring which has a non-circular shape whose angle is tailored to the pedal stroke of the individual cyclist. These were designed by engineer Jean-Louis Talo who claims that this improves cycling performance. Such chainrings were used by professional cyclists Bradley Wiggins and Chris Froome for their Tour de France victories. [1] [2]

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References

  1. Daniel McMahon (20 July 2016), "Chris Froome is using these weird chainrings, and they might be helping him win a historic 3rd Tour de France", Business Insider
  2. Oliver Bridgewood (23 March 2015), "Osymetric chainrings: do they work?", Cycling Weekly