I use a 4iiii 105 left crank on my roadbike
My FTP last time outside was about 290.
Yesterday i tried indoor trainer (tacx flux smart) for the first time. I had the poweroutput of the trainer on the phonescreen and from my crank on the wahoo bolt.
After the FTPtest the trainer gave me power outputs around 300 watt, and it felt like that was acurate, little harder than the outdoor 290 one.
But, my wahoo and 4iiii said i was doing about 230 watts when trainer says 300. 60-80 watts always below.
I used the crank again outside and for feel riding again at 300 watts it did read 300 watts.
What is happening? Is a left crank bad for indoors on the trainer? It was calibrated and everything, neverhad inacuracy problems before outside