You’re correct. For the ramp test I went through my normal protocol of performing a spindown through the TR iOS app and then did the ramp test. It felt exceptionally difficult and my HR wasn’t correlating with the on-screen power numbers. I know there are many factors that can contribute to elevated HR, but 95% of the time I ride it’s within expected values at a given power zone.
Within 5 minutes of ending the ramp test, I fired up the Wahoo app and did a factory spindown and then promptly did a manual workout with the Wahoo app and power numbers were some 40w higher than what I’d typically see through the TR app. I knew at that point something HAD to be off with the trainer prior to doing the factory spindown.
For context, prior to the factory spindown I was using an FTP of 260w for all of my TR workouts, and it felt like the right number, however, I had a hunch that 260w was ~30w lower than my true FTP. After the factory spindown my FTP (estimated from 2 8-min all out efforts, 332 and 339w) my FTP is now set at 300w (3.67w/kg). I think this is a conservative figure.
My hope is that the factory spindown eliminated whatever accuracy issue was happening and that I’ll be able to use the TR app @ an FTP of 300w for all future work and successfully complete workouts at that wattage. I’ll be doing a test workout tomorrow to see how it goes.