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  4. PowerTap PowerCal

PowerTap PowerCal

  • PowerCal Quick Start Guide plus icon minus icon
  • English, Spanish, French, German Italian and Dutch See more
  • Will my phone or tablet work with the BLE Powercal? plus icon minus icon
  • The BLE powercal will work with iPhones versions 4S and newer. With tablets you must have an iPad 3 or newer, and Android tablets must have Jelly Bean OS 4.3 or higher. View more information about ... See more
  • Why does the power reading jump around so much? plus icon minus icon
  • This is a question we get with new PowerTap users as well. The answer is the products are able to measure very small changes. In the case of the PowerTap (hub) it can measure changes in torque and ... See more
  • Is it more accurate for certain types of riding (steady-state intervals, climbing, sprinting, etc.)? plus icon minus icon
  • PowerCal is more predictable in a steady-state, longer intervals or climbing where constant fluctuations in output are minimized. See more
  • How does it accommodate changes in fitness, fatigue, dehydration, etc. (all the things which influence HR)? plus icon minus icon
  • In terms of changing fitness with a given individual our initial assumption was that yes, as fitness increased the user would need to re-calibrate to properly adjust the system but what the researc... See more
  • Will PowerCal give you both HR and power readings? plus icon minus icon
  • Yes. If pairing to a Joule, make sure to pair it was a heart rate monitor. The Joule will sense it as a PowerCal. If using a Garmin computer, you will want to be sure to pair the PowerCal as a powe... See more
  • Follow How does it compare to PowerTap? plus icon minus icon
  • It doesn't and isn't intended to. The PowerTap directly measures power through strain gauges on the torque tube, which is a direct measurement of power. PowerCal is an estimated value derived from ... See more
  • How accurate is it? plus icon minus icon
  • The PowerCal is not as accurate as a PowerTap and not intended to replace one. Research has shown varying degrees of accuracy based on individuals and types of riding. Accuracy will depend greatly ... See more
  • Why does it no longer have to be calibrated? plus icon minus icon
  • After years of research and reevaluation of the algorithm it was determined that the calibration process added no more accuracy than the algorithm alone. Due to the variability of heart rate, both ... See more
  • How is the PowerCal any different (why is it better) than a Heart Rate Monitor? plus icon minus icon
  • First, it introduces the relationship of a dose vs. training. The PowerCal contains an algorithm that is sensitive to acute changes in Heart Rate (HR) and can account for rapid changes in power ou... See more

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