I have a 3 week old Kickr and I have yet to have ERG more work for me correctly. Everything is calibrated and paired. I have done this multiple times as well as deleting and reinstalling TR, re-pairing devices etc. TR is the PC app using ANT+ and I record the Stages for comparison on a Garmin 520. TR is paired with the Kickr and the Stages but for cadence only. I did have the Stages power driving the Kickr output (after having to borrow an iOS device) but had even worse results.
I am seeing a distinct drift between power reading over the course of a ride. In the beginning the Kickr and Stages power track close to each other, never varying more than a few watts when riding smoothly. Later in the ride there is a consistently higher reading from the Stages power when compared to the Kickr output on TR.
Any suggestions how I can reduce or eliminate this drift? Is my Kickr faulty? What are other people seeing for drift over the course of a ride?
TR power required - 168W
Early ride Kickr readings (13 to 15 min) average 168W
Early ride Stages reading (12:59 to 14:59) average 170W
TR power required - 170W
Later ride Kickr Reading (50-55min) average 171W
Later ride Stages reading (50:01-55:00min) 182W