![]() Consistently stable, simultaneous ANT+ and Bluetooth Low Energy (BLE) communication mean it syncs easily and then stays hooked up with every smartphone and GPS unit we’ve paired it with.Īccuracy is around 1.5%, and it delivers left/right balance as standard. ![]() MagicZero calibrates automatically with a wide range of temperature compensation too so it’s super easy to set-up. ‘AxCad’ means there’s no need for a cadence magnet. The Quarq spider benefits from 10 years of development and innovation and the result is super reliable. Complete cranks also come with the excellent, chain nurturing, smooth driving, double-scoop X-Sync2 chainrings. ![]() SRAM brought Quarq power meters into its family a few years back and the XX1 Eagle cranks use its latest superlight, hollow ’carbon tuned’ arms and ‘almost 30mm’ DUB axle for noticeably increased stiffness over previous SRAM cranks. While it’s a heavier and more expensive solution than a left-arm sensor, the fact it’s spider-mounted means no worries about chainstay clearance either. It records data from both legs not just left or right which makes it cracking value even after you’ve swallowed the cost of a software upgrade to get the most from the unit. Power2Max (and licensed FSA units) have always been rock solid reliable however grim the weather or long the usage span when we’ve tested them. ANT+ and Bluetooth Smart communication is stable and consistent with self-calibration and temperature monitoring making set up easy. Measurement is single-sided but as the NGeco hardware is pretty much identical to the more expensive NG version there’s the option to upgrade the software later to add left/right balance and other data for a relatively small cost. You can also get FSA cranks in either carbon fibre SL-K or alloy Afterburner formats. Most come in single or double options as well as standard or Boost offset, so even older bikes are covered. Whatever compatibility-option you go for, the measurement occurs in a rechargeable battery-powered spider block that retrofits onto the relevant crank spline pattern.
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