Which spindown is considered more accurate when using a bike on a wahoo kickr core?
When I first started riding my average watt output for 20 mins on relatively flat routes was 230w. However, when I performed a spin down using Zwift my speed and distance performance dropped significantly. I struggle to almost get about 130w on a 20 minute relatively flat ride with a few hills. I am 25, 70kg and relatively fit.
Just wondering if my speed and power is an illusion and there is something I am missing on the setup?
I have added three photos covering different measurements I have done.
Photo 1 - Yorkshire is my performance after the Zwift spin down.
Photo 2 - A race I did after a wahoo spin down.
Photo 3 - Cycle I did in London on a Brompton with loads of traffic lights.
Any help would be greatly appreciated.