Hi Everyone,
I’m using the Favero Assioma pedals in combination with Kickr Core and android app, therefore utilizing the powermatch function. Mentioned this morning that when in ERG mode the actual follows target line right to the point, which is the case when using trainer’s power (without power meter), the power match at the bottom was active and showed +0 watts the whole way. Also, I had the power meter connected to the watch which was reading differently to the trainerday app.
Hi Dennis, Can you send a screenshot? That will help us troubleshoot. One other user reported that his power meter pedals were showing as smart trainer rather than power meter which would cause a problem. We are working on fixing his problem but not sure if that is your issue. No one else has reported anything.
Hey Alex, thanks for getting back to me and apologies for taking some time to respond, was off the bike for a week. Actually I think it is resolved as of this morning. I saw there was an app update, which could have helped, not sure, but it’s back to normal.
I am using Nero Elite Rollers as smart trainer in combination with a Quarq Dzero power meter and powermatch. Cannot get it to work, below the graph. Got off the bike multiple times, and switched to manual setting for the fifth interval. The manual setting showed me that I was not getting close to any of the Nero limits in terms of drum speed or manual level. What am I doing wrong?
I would suggest first trying it without the Dzero, or recording the Dzero on a garmin or wahoo device. Then second I would try it with Dzero but without power match on. In the case of extreme differences which might be the case of your rollers and Dzero our power match might not work very well but first we need to isolate the problem of just your rollers and our app.
I don’t know what you mean by manual mode as I don’t understand these rollers, I guess manual mode is like slope or resistance mode but possibly set on the rollers? I am suggesting using our ERG mode but just connect only the Nero and send me the screenshot from TD like you did.
So ran erg-mode without powermatch and waited for the interval to jump from 150 to 213W. That did not change the settings of the Nero at all. Kept going for two minutes, no effect. Got off the rollers to check the setting, peddled a couple of more minutes and then switched powermatch on. That did affect the settings and matched the 213W fairly well, but then it could not match the 138W interval.
Hi @Alex , looking for how to solve the problem on the web I have arrived here. I’m just looking for this. I want in my structured workouts the watts governing the roller to be those of my favero assioma pedals instead of those of the roller itself which are very inaccurate (BKOOL pro2). Is that possible on TrainerDay? At the moment after a lot of searching and testing only ZWIFT does it.
It should be logical in general, shouldn’t it?
If you spend “a lot of money” buying a potentiometer, do you want it to be the one that count all your workouts… what sense does it make to connect an external power source to the system (not using the trainer’s watts) if the ERG doesn’t use it for anything?
It is indeed ‘logical’, but it is a daunting task to achieve this technically and digitally…
Especially with a wheel-on trainer like yours.
Inaccuracies with wheel-on trainers are very dependent on tire pressure, wheel tension, environment temperature and more stuff that you’re not directly thinking about. Like tire temperature that increases with harder efforts, in turn making the tire pressure increase, which reduces friction on the roller and lowers resistance…
My first advice would be that you design a protocol that you follow precisely every time you put your bike on the trainer. Inflate rear tire to the exact same pressure, make sure that the tension from the roller against the tire is always the same. When you have your best settings for both of these (avoiding slippage is a main concern), perform a roll-down calibration. Then afterwards don’t calibrate again, because every following calibration will mess up stability again. Tension and pressure are the key factors to make something reproducible.
Once that is done, the power from the trainer should be more or less in the ballpark and you can activate the PowerMatch function in TrainerDay which will do a decent job for longer steady state intervals. For short high intensity intervals, it’s far from ideal. TrainerRoad and Zwift are doing a better job, but Alex is working on a second version that should improve things.
The difficulty is to design an algorithm that smooths enough for longer steady state efforts but is at the same time fast enough to acknowledge abrupt resistance changes for short HIT intervals. On top of that, all the different trainer models have their own specific attitude, so what works for one, isn’t necessary working for all trainers.
Do as indicated above and try it out with longer steady intervals to get an idea how well it works with your trainer. you will find the setting on the Settings - Other Options - Power Match page.
Yes TrainerDay should work with our power match feature but I think your BKOOL is not FTMS is it? so you would need an Android phone with Ant+ for this to work. You can do quick test with the free version of our app. TrainerRoad also has Power match. Everything @MedTechCD said is correct.
