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Powertap C1 chainrings : Just in

PowerTap C1 Power meter
Josh Cunningham
9 Mar 2016

Powertap's £599 C1 chainrings, with dual-sided power readings and multi-crank compatibility, lands in the Cyclist office

Powertap launched the C1 chainring-based power meter along with its P1 power pedals early in 2015, after years of success with its established rear hub system. For a long time Powertap held a co-owned power meter monopoly with SRM, but the emergence of other systems, from the likes of Quarq, Stages, Look and Rotor, have preceded this latest offering from one of the original power meter players, and it's just arrived in the Cyclist office. 

The C1 chainrings are compatible with almost any compact chainset with 110 BCD, allowing the user to simply bolt the device to their existing spider. The chainrings themselves, available in 50/36, 52/36 and 53/39, must be the specific FSA ones that Powertap provide, coming as a combined unit that attaches to a yet smaller ring, with the join housing the strain gauges themselves. Because of the nature of the design, you're not able to use anything smaller than a 36 on the small ring. 

Connectivity is provided by ANT+ as well as Bluetooth Smart, but the dual-sided readings will not be available as a realtime measurement, as the numbers are worked out retrospectively by use of an algorithm. 

A simple CR2032 battery is all that's needed to power the device, and run time is claimed to be around 200 hours, with the added weight of the unit a claimed 150 grams. 

Obviously with its £599 price point, and the fact that the buyer can simply attach the unit to their existing set up, puts the C1 in line with a less experienced target market, but on the face and feel of it, it appears to be a well conceived and manufactured product. Once we've been able to put it through its paces, we'll be able to say for sure.

Read on for our guide on power meters, or how to choose one

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