Stages prototype power meter spotted - video

New, slender Stages meter seen on Chris Froome's Pinarello at the Tour

Stages power meter prototype spotted

Team Sky's Tour de France hope Chris Froome has a prototype Stages power meter on his race bike, but neither team mechanics nor Stages Cycling is talking about it.

Stages inline power meters are lightweight units that mount on the left crank of metal cranks, measuring deflection with strain gauges. 

The prototype Stages meter on Froome's Tour bike is also mounted on the left crank and is roughly the same length as current units but is much thinner.

The prototype stages power meter is more slender than the current model: the prototype stages power meter is more slender than the current model
The prototype stages power meter is more slender than the current model: the prototype stages power meter is more slender than the current model

The prototype Stages meter on Chris Froome's Tour de France bike

Stages had some trouble with water seepage killing batteries on some of its earlier units, so perhaps this new design could be a fix for that. There could be new functionality, too, but Stages won't go into the details.

"We're always testing new products and ideas," Stages' marketing director Matt Pacocha told BikeRadar. "The reason we work with a team like Sky - and all of our teams - is to put Stages Power into the most intense crucible of the sport with the goal of testing and continuously learning how to better our meter and identify new concepts. Stages Cycling is a product development company and we absolutely use our teams to test and vet different product ideas; their opinion and feedback is an amazing resource for Stages Cycling. 

"It's important to note, however, that Team Sky is very happy with the current product and it has performed better than anything previously employed. Furthermore, many of Team Sky's superstars, have trusted and continue to trust the production of the Stages Power meter to track their training and racing efforts."

Relatedly, BikeRadar has spotted dual-sided Stages power meters on test. These units feature the same left-crank meter but with another meter on the right crank as well, placed just inside the spider. Stages has the same no-comment comment for this prototype. BikeRadar has not seen any of these dual-sided prototypes yet at the Tour.

We have also seen dual-sided stages power meter prototypes, but have not spotted this type yet at the tour de france: we have also seen dual-sided stages power meter prototypes, but have not spotted this type yet at the tour de france
We have also seen dual-sided stages power meter prototypes, but have not spotted this type yet at the tour de france: we have also seen dual-sided stages power meter prototypes, but have not spotted this type yet at the tour de france

Stages is also testing this dual-sided power meter, but we have not yet seen one at the Tour de France

Check out more Tour de France tech coverage at our Tour de France 2015 homepage.

Ben Delaney

US Editor-in-Chief
Ben has been writing about bikes since 2000, covering everything from the Tour de France to Asian manufacturing to kids' bikes. The former editor-in-chief of VeloNews, he began racing in college while getting a journalism degree at the University of New Mexico. Based in the cycling-crazed city of Boulder, Colorado, with his wife and two kids, Ben enjoys riding most every day.
  • Discipline: Road (paved or otherwise), cyclocross and sometimes mountain. His tri-curious phase seems to have passed, thankfully
  • Preferred Terrain: Quiet mountain roads leading to places unknown
  • Current Bikes: Scott Foil Team, Trek Boone 5, Specialized S-Works Tarmac SL4, Marinoni fixed gear, Santa Cruz Roadster TT bike
  • Dream Bike: A BMC Teammachine SLR01 with disc brakes and clearance for 30mm tires (doesn't yet exist)
  • Beer of Choice: Saison Dupont
  • Location: Boulder, CO, USA

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