Hi all,
Just another topic about divergence between power sensors… Sorry for annoying again with that, I just would like to get some more thoughts on my data 
The setup:
- Tacx Neo: ANT+ > Laptop > Zwift > Garmin Connect
- Rotor 2INpower: ANT+ > Garmin Edge 1030 > Garmin Connect
My issue, if it is…, is that I constantly get 15-20W more in average on the Edge activities than Zwift.
Note: I’m always doing workout with ERG, and compare data from GC.
I know that the drivetrain introduces a normal loss of power, but something like 5W for a clean chain. Since the accuracy for both sensors is about 1% I’d more expect 5-8W more on the Rotor.
I also saw so many posts from users saying that they have roughly the same wattage on their trainer and pedals/drivechain sensors that I’m suspecting a problem on my side, even minor
For you, is it something normal that I should not worry about?