Osymetric

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

Bradley Wiggins British former professional road and track racing cyclist

Sir Bradley Marc Wiggins, CBE is a British former professional road and track racing cyclist, who competed professionally between 2001 and 2016. Nicknamed "Wiggo", he began his cycling career on the track, but made the transition to road cycling and is one of the few cyclists in the modern era to gain significant elite level success in both those forms of professional cycling. He is the only rider to have combined winning both World and Olympic championships on both the track and the road, as well as winning the Tour de France, and holding the iconic track hour record. In addition, he has worn the leader's jersey in each of the three Grand Tours of cycling and held the world record in team pursuit on multiple occasions.

Chris Froome British cyclist

Christopher Clive Froome, is a British road racing cyclist, who currently rides for UCI WorldTeam Team Sky. Considered by many as one of the greatest stage racing cyclists of all time. He has won all of cycling’s three grand tours. This includes four editions of the Tour de France, the Giro d'Italia in 2018 and the Vuelta a España in 2017. Froome has also won two Olympic bronze medals in road time trials, in 2012 and 2016, and also took bronze in the 2017 World Championships.

Tour de France Cycling competition

The Tour de France is an annual men's multiple stage bicycle race primarily held in France, while also occasionally passing through nearby countries. Like the other Grand Tours, it consists of 21 day-long stages over the course of 23 days.

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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