I have a Quarq DZero power meter, and I notice with the new power balance HUD field, the left and right values are actually swapped! Only pedaling with my right leg increases the left number and vice versa.
Hi @Ty_Cashen
Shuji at Zwift HQ here. Zwift is only picking up whatever raw left / right data that your power meter is broadcasting and displaying it in the HUD as-is. We do not assign a left / right value to those numbers, nor is there a way to switch them in the Zwift HUD.
You may want to contact Quarq to make sure that your the crank is physically installed correctly and electronically configured correctly as well.
The Quarq uses a single-side load sensor built into the spider, which directly measures only the right side, and does fancy math to extrapolate the left output. How you would âtellâ the Quarq that youâre pedaling circles with the right leg only or left leg only is probably the answer you need.
See this response form Quarq support in [DC Rainmakerâs review of the DZero]. This partially informs how the left/right split is calculated. (Quarq DZero Power Meter In-Depth Review | DC Rainmaker).
I just did a test where I paired my power meter with both Zwift and a Garmin head unit at the same time. I only applied force with my right leg from 12 oâclock to 6 oâclock, which should be considered as right-sided power. My head unit correctly shows a much higher percentage of right-sided power in the data field. Zwift shows the same numbers at the same time, except left and right are swapped.
Thanks for your quick response. I guess Iâm still not sure why Zwift would be different from my head unit.
@shooj , I did one more investigation. The power balance written to my Garmin Connect account from Zwift is swapped, and the power balance written to my Garmin Connect account from my Garmin head unit is correct.
Hmm. Interesting. Let me flag that up to the team.
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IIRC, both ANT+ and BLE power meters send total power, plus an optional field indicating the power percentage (balance) for the right leg.
Itâs up to the receiver to calculate what left and right wattages to use. The dense specs make it easy to get this back to front.
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