I’ve just bought my first power meter. I went with the 4iii. I can’t justify the cost of a dual leg meter. I want to use it for pacing my outdoor rides and interval training etc. I have a number of options of calibrating (or not) the power between the Kickr Core I use with TrainerRoad and the 4iii and wondered which you guys thought would be best.
Trust that the Core and 4iii power readings will be roughly the same and use my Core/trainerroad FTP for outdoor rides. I think I probably have a difference between left and right legs, because I can feel my right spins in smooth circles whereas my left does not. So option 1 is probably a bad idea.
Do an outside FTP test on the 4iii and use that result for outdoor rides. Then, If my FTP has improved after doing a TR ramp test, I can adjust the outdoor result by the same number of watts.
Put 4iii on my Kickr Core bike and look at the difference in power readings and use 4iii’s scale factor to match them as best as I can. If I do this option, should I measure the difference between max power, average power or ftp?