Here we go
Comments:
Sunday endurance ride: TR with connection only to Kickr, which has been set via Wahoo app to do power match. As I mentioned, total crap, 146/157 TSS.
Tuesday VO2 max workout: TR with both cranks and Wahoo connected, Wahoo power match is off. Result: spot on, +/-1W. The only time it wasn’t perfect was on 3rd VO2 interval in which I rolled in slowly. On short intervals I usually spike at the very beginning to offset trainer lagging power. 85/86 TSS
Wednesday endurance: TD with power match on right crank. Result: spot on, even better, than TR. 87/88 TSS. Garmin lost for a few seconds power cranks, otherwise TSS would be probably identical.
Thursday: threshold workout. Garmin Edge 1040 connected to both Kickr and cranks, as reference - Wahoo Bolt v1 connected to cranks only. Result: Garmin writes the real power from cranks and this is 100% confirmed by Bolt, deviations were within 1-2W when no drops. BUT: Garmin tends to keep you above the workout target, it’sa tiny margin at the beginning but the longer you are into the ride, the more above the target you get. Examples are the threshold intervals that are so supposed to be 280W. 1st and 2nd were almost spot on, last was 286W. TSS: workout 92, Garmin 93, Bolt 94. If Garmin had no power drops, then it would probably also showed 94.
I find it interesting, since most of the apps keep you usually below the target, not above.
Conclusions:
- Wahoo Kickr internal power match is crap
- TD, TR are excellent
- Garmin 1040 does the job but tends to keep you above the targets.