Wahoo Kickr Analysis - Not As Accurate Below 200 watts
Interesting post on the Google Wattage Forum talking about a research paper looking at the Wahoo Kickr accuracy. The paper is here:
The conclusion: Conclusion: When compared to a CALRIG, the Wahoo KICKR Power Trainer has acceptable accuracy reporting a small mean bias and narrow limits of agreement in the measurement of power output between 250-700W at cadences of 80-120rpm. Caution should be applied by coaches and sports scientists when using the KICKR at power outputs of <200W and >750W due to the greater variability in recorded power.
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I saw that. potential issue for folks pushing less than that. reinforces considering comparing your crank power device to the Kickr.
Digging deep. it seems to be an issue with cadence. E.G., "Figure 2 shows a small mean bias of 0.8% between the KICKR and the CALRIG at the lower ranges of power (150-200W) at a cadence of 80rpm,"
Specifically, @ a cadence of 80, pushing 150 watts, there is an error of 0.3%. My usual riding on a KICKR occurs between 150 and 250 watts. And, the higher the watts, the faster I am pedaling, in the range of 77-94. @ 250 watts, cadence of 90, the error is 0.6%. Looks like Wahoo set it up right just for my sweet spot.