For the past 10 years Quarq developed performance measurement systems for athletes who want to leave nothing to chance in training. In the DZero PowerMeter platform Americans could incorporate all their experience and integrated the latest technical standards.
The DZero PowerMeter continue to rely on a spider-based performance measurement. Since this system performance measures there where it is rendered and the power is measured by both legs, this system ensures a very high accuracy.Externally changed only in detail, the DZero PowerMeter but have a completely redesigned interior. Not only the instrumentation is new, even the arrangement of the strain gauges has been further optimized. The result is an even more accurate power measurements at every stage of a turn of the handle and an improved measurement accuracy in temperature. Thus, the values must be less corrections via the internal software.Another important new feature is the data transmission via Bluetooth Low Energy standard, in addition to transmitting the ANT + standard. Thus, the DZero PowerMeter can be paired with almost all available in the market cycle computers and smartphone apps. To upload firmware updates and perform system diagnostics, Quarq has developed the Qalvin app for IOS and Android.
The Quarq DFour PowerMeter is adapted from Desig nan Shimano Dura Ace 9000 chainrings. Thus, the DFour PowerMeter 9000 Group adds optically perfectly into racing wheels with Dura Ace. The Carbon Exogram cranks are manufactured entirely hollow construction and guarantee so for very high stiffness and extremely low weight.The compact design of the power meter is the system a very low weight and offers plenty of space to oversized frame.
- 10K Active Temperature Compensation - Wireless data transfer via Bluetooth low energy or ANT + - Chainring change not require recalibration have no influence on the measurement accuracy - Cadence measurement via accelerometers (no additional magnet required!) - Waterproof construction IPX7 standard - LED power indicator always informed of battery level - 200 hours time (tool-free battery replacement by CR2032 Standard) - Power Balance - +/- 1.5% accuracy
Material Handle: Carbon Material Spider: aluminum Wave: GXP PCD: 110 mm, asymmetrical Compatibility chainrings Shimano 11-speed (except R9100), designed for Dura Ace 9000 Technology: Exogram, Quarq Power Meter Crank arm: 165; 170; 172.5; 175 or 177.5 mm Q: 145 mm Chainrings: without Color: black-carbon Finish: UD glossy
Weight (without bottom bracket and chainrings; manufacturer): 588g
Delivery: 1x SRAM carbon crankset with Quarq DFour PowerMeter, without chainrings, without bottom bracket.