Been following along here after picking up the new v5 Kickr and already had the Assioma Duos. I seem to be seeing some “drift” where the pedals start reading higher (or Kickr lower) in ERG mode, but the weird part here is I have the Wahoo app set to “control from ANT+ power meter” with the Assioma ID in there. Does that make any sense?
Today’s ride as an example. Starts out pretty close, then drifts to ~5-10W higher on pedals, despite the Kickr in theory using that as the power source. I don’t expect instant power to match but I expect 15 min intervals to land within a couple watts. Is my expectation off?
I have no experience with the “control from ANT+ power meter” feature, but thought that was Wahoos own “power match” feature. So would expect graphs to line up pretty close to each other, that isnt the case in the dataset over. Doesnt seem to work at all.
I would toggle off the “control from ANT+ power meter”, set power source to Assioma Duos and controllable to Kickr in Zwift, then I would expect the Assiomas to hit the ERG-target.
I still get a little drift in the same direction but it remains (just) within the combined accuracy. Kickr starts +1% and ends -1.6%
So they are drifting 2.6% over the hour which isn’t ideal but they do line up exactly around the middle when they intersect
I calibrated both PMs after the warmup - zero cal on the pedals and just relied the auto cal on the kickr. Suppose my next experiment would be to trigger an auto cal on the kickr before the last set to see what difference it makes.
Mine has been drifting about the same for couple of weeks now, Quarq reading from -3% in start to -0% in end of workout. Looked like the drift was getting gradually worse over those weeks so did a new factory spindown after workout november 20. On workout november 21 Quarq was back to reading from 0% in start and +4% in end of workout including those power jumps mentioned earlier, so did a new factory spindown after workout november 21. On november 22 Quarq was back to reading from -3% in start to 0% in end of workout.
Found out last week that the KickrV5 isnt compatible with the 2021 Emonda, which I have ordered for next year. So I will probably ask my bikeshop if they will give me a deal on the Neo 2T. Which is a bummer since I sold my 2T to buy the Kickr, but I really dislike this drift.
Drift a little worse on my last ride - not too bad though.
Line up well at the start but Wahoo 4% down on the favero pedals after an hour. Again not so sure that my pedals are not the ones drifting - they only had 30mins to warm up from the 10 degrees outside to the 20 degrees in my house.
I don’t want to buy a third power meter
I’ve never noticed the “steps” that @daniebr has seen
Bought the Assiomas, and they are seriously spot on with my Quarq from day 1, “allways” within +/- 1% of each other. The Assiomas drifted a few % on their third ride, but Im guessing they where settling in or something. Rock solid afterwards.
I have now done 10 workouts with both the Quarq and the Assiomas and results are the same as before, a drift of 2-3% during a workout.
My Kickr did however start to make a small noise from the flywheel I believe, so Im now getting a new Kickr. So when things seems to have settled nice, Im starting all over again
To my ears, that is a very early onset of the what I call the “Klickr/Clickr” failure. Super common with the K18 and Core models, claimed to be resolved now on the K20/V5 models.
As mentioned, coasting doesn’t happen typically in Resistance mode either.
Interestingly, there is a chance for coasting in some workouts that include the sharp sprint efforts at 150+% of FTP. These frequently lead to at least a few seconds of freewheel coasting when the flywheel slows back to the normal speed and related cadence. So, some workouts may well allow for coasting, while others (anything without those types of spikey efforts) will not.
Updated to the latest firmware this morning. Decided to disable Power Match and see what the numbers looked like. I run in the small ring upfront and halfway down the cassette in back so pretty slow flywheel speed.
Test ride this afternoon (Pettit) and saw the Kickr/Assiomas drift from <1% in the first 20 mins, to 2-3% in the second, and 4-5% in the last 20 mins. Tried coasting a couple times with no effect.
It’s not a deal breaker but am open to suggestions if this can be avoided.
@mcneese.chad: Received new trainer and updated to new firmware dec 22. I have only been able to do two workouts yet.
First ride Quarq/Duos reading +2% to +6%,
Second ride Quarq/Duos reading -4% to -1%
Did factory spindown after both rides, but have not been able to ride more yet. Expecting readings to stabilize somewhere near the second ride, then readings will be very similar to my first Kickr20. That would mean that both Kickrs have a small drift. I have not been able to see any differencies in readings after firmware update, but havent tested that much either. Did never try new firmware on first trainer.
@therhino: Have you tried a factory spindown? That is the only way I have been able to get any “change” in readings.
