Rotor 2INpower Powermeter Crank Arms

Few areas of the cycling industry seem as unnecessarily cluttered with options as powermeters, but Rotor's 2INpower Powermeter Crankset, unveiled in 2016, has already earned its place at the table. Under Dimension Data's Cummings, the 2INpower was ridden to stage wins at Tirreno, the Dauphine, and the British, Basque, and French tours. That's an impressively developed pedigree for such a young product. Though Cummings' engine is largely responsible for that success, it's easy to assume that his penchant for knowing exactly when to make his move and his ability to make 60km solo attacks stick is informed by the accuracy and reliability of the info he's being fed by the 2INpower. We'll get to that info in a moment, but for now, the internals: Instead of housing them in the spider or in attachments to the crank arms or chainrings, Rotor situates all of the electronics in the spindle. This provides more protection against the elements be they rain, snow, or tarmac encountered during the inevitable user error, and it also helps to tidy up the crank's silhouette by eliminating bulbous protrusions at the crank armchainring interface of course, Rotor's typically aggressive, Euro race graphical treatment and iconoclastic chainring designs still manage to stand out. While the electronics are all spindle bound, the power measurement circuit encompasses both the spindle and the right crank arm, with both receiving four strain gauges for a total of eight. This seems excessive in an industry where five strain gauges is the high end of normal, but incorporating more gauges reduces the chance that external conditions read: rapid changes in temperature can adversely affect the 2INpower's accuracy. Since they're laid out in opposition, the eight gauges work as internal correctives to each other to provide more points of input, help the system reduce drift, and eliminate the need to constantly zero by establishing a more comprehensive body of aggregate data. As with other p...