Stages Cycling is now shipping carbon crankarm versions of its single-sided power meter, which also has the company's new, smaller housing.
Stages Cycling's new carbon crank works with both SRAM and FSA cranksets. Stages debuted the first left-arm crank-based power meter in 2012, but the new model is a world first for a carbon crank with a power meter built onto it.
The crank works as is with FSA cranksets, and with one of four spindles for compatibility with SRAM Red, Force/Rival, and two widths of mountain bike options.
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The Stages Carbon is ANT+ and Bluetooth Smart compatible.
To crack the carbon conundrum, Stages had to overcome several hurdles. Issues stymieing the quick production of a carbon Stages meter included difficulty in bonding to a composite material, temperature compensation and different fatigue characteristics.
“We could have made a carbon power meter a long time ago, but it would have had the functionality of a meter from the pre-Stages era," Sam Morrison, Stages Cycling engineer and carbon product manager said. "The problem isn’t measuring deflection in carbon, it’s dealing with changes of the material when the operating temperature changes. We could have easily released a meter that would require constant and vigilant zero resets; rather, we took our time and built a new system to specifically deal with the challenges carbon faces when temperatures change.
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