I started Training with TrainerDay recently and so far it really helped me to get going!
I have a technical question and couldn’t find the answer. Apologies if I missed it…
I use a Kickr Core 2 with cog, my iPhone to run the TrainerDay app, a H10 heart rate sensor and I recently got a SRAM quarq power meter fitted on my bike. The one which does measurement on the left side. (SRAM force xplr axs or so)
Is my assumption correct that the power meter is more accurate than the trainer?
What would be the correct setting if I want to use power readings from my power meter to control the trainer. My thinking is that then I will have the same (right or wrong) metric no matter if I ride on my trainer or outside.
Is there a possibility to record the power values from both devices for comparison?
Which sensor is used when exporting either to trainingpeaks or via FIT to intervals.icu? The power meter or the trainer?
Dzien dobre, yeah your SRAM will be more accurate than the kicker core. I also have a SRAM/kickr. So yes set sram as your power source and turn on power match in our settings to make sure that we adjust your trainer to match the offset. When you save your workout it will be the sram source and that will go to strava or dropbox and on to intervals.
I wasn’t quite sure because when I used the SRAM power meter, the graph during training was all over the place and after switching back to kickr it was again smooth
Oh, first look at your name, I saw the “i” at the end. It looked Polish. I’m American but I live in Poland. Austria is great. Went skiing there last winter. The kicker has some magic smoothing that makes it look unrealistically smooth. You can actually turn that off in some kicker settings, but it sure looks good. Smoothing works especially good in ERG. They know what the target is, and so they just pretend to make it smooth to match the ERG. Really jumpy power is more normal, but once you turn on power match, it should center on the same line, the top of the blue bar, but it will still be messy.
I don’t use power match but i also just experienced power discrepancies. Its seems in avg the watts match. Underpowered in the beginning and overpowering at the end in the erg part (first 5 mins)
I should say, and you’re absolutely sure you started in ERG? Maybe it didn’t start in ERG. It looks like it started in HR mode. I will say one thing is we did modify how we send targets that we don’t send it as often. I think we only send it every three seconds and we used to send it every one second. So there would be a slight delay compared to what there used to be. That’s possible what we’re seeing here. Although it doesn’t look like it. And when I’m doing tests right now, I’m not seeing it look like that.
This makes sense. I did not check if it started in ERG but now i think it started in HR+.
It was a bug(?) in very previous versions that it started the workout with the mode the last workout ended. At some point it was fixed and i stopped checking.
So you’re saying the workout actually says ERG in the segment type field? I tested that a bunch, but it’s always possible that a trainer doesn’t catch the ERG at the beginning. We changed the timing slightly of things, trying to be even safer although some trainers might not always pick every request up.
Okay, yes, I was able to duplicate this. Interesting, when I had HR first, I couldn’t, but when I had ERG first and I ended with HR, I was able to duplicate this.
So we realize part of the problem here is this 95%. When you change the 100%, it doesn’t work correctly with Power Match. If there’s something beyond that, if you are already having a problem, that we can’t reproduce. But you have to realize with Power Match, it actually takes a while to catch up. But you can see the calibrating message and stuff. But we’ll fix this bug regarding making adjustments not working with Power Match. and go from there, but it should work fine. So even for now, if you just don’t make any adjustments, from our perspective, it works on all the devices we have.
No, there’s a total bug here. I completely found it. There was actually two bugs. One is it doesn’t continually adjust the power match as the workout goes along. That’s part of what you saw. And then the second one is the offset didn’t work. Both are coming with a fix, should be here tomorrow.
This power match issue is fixed. available now on Android and hopefully later today for Apple devices. It says it’s under review now. So usually that just takes like an hour or something.
