As title says, I have installed the adjustable crank set, as I am using 165mm due to bikefitters recommendations. I see no options in the Wahoo app to select crank lengths, so I assume it’s going to automatically calibrate? Or should I do a spindown?
Thanks for any help 
I guess this is unknown for now, I will just do a spindown and ride on
I haven’t found any documentation on this either, so I haven’t found any settings in Zwift (to select crank length) or in the Wahoo app either, so I am guessing it’s all automatic
Direct drive trainers don’t care about your crank length. It would only be relevant to a power meter that measures power at the crank arm or pedal. Any difference in power will be due to the mechanical change, in other words it would be real and not a measurement problem.
Ah, that makes sense of course! Thank you sir