After a break after my marathon, I started riding on Zwift and got really hooked on it.
So for the past 3months, I’ve been riding with my very old “dumb” wheel-on trainer with speed and cadence sensors.
Each ride, I did a calibration of the trainer and the power on Zwift was more or less the same as what my Tacx showed on its screen.
This week I switched to the Favero Assioma Duo and all of sudden my power dropped by 20% or even more…
I’ve seen posts about Zwift overestimating power based on speed/cadence, however, now it also seems that my old Tacx Flow is showing an overestimated power.
Would this be normal?