Difference in power between Favero assioma uno and wahoo kickr Core one:
About 15-20W difference (173W reported by the Wahoo kickr Core one, 156W by my pedals)
Both are calibrated and re-calibrated after re-installing. Both are updated. Power of favero assioma uno is reported on my Garmin Edge 840.
I use ERG mode on Zwift, but also sometimes without. The difference between Zwift with or without ERG and Favero assiomi uno are almost the same.
I’ve also checked for the right crank length and that is correct too.
I have been in endurance sports for 3 years, and 1 years into cycling, my current ftp is about 3.5W/kg. I’m quite surprised if the difference would be the result from just leg imbalance.
I’ve been reading a lot of comments and reddit posts, but it really hasn’t gotten me any further then “it is what it is”.
What do you think could be causing the issue here?
with only two sources of data it is impossible to know which is correct.
do you have access to a different trainer at all? could you try your bike and pedals on that? if that is nearer your pedals then they are more likely correct if it is nearer the trainer then it is possibly that.
they both have accuracy tolerances so if one is at the upper end of that and the other is at the bottom, that coupled with any left/right imbalance probably wouldn’t get you too far off that difference.
that’d be good, if you can either check your power meter on a different trainer or try a different power meter on your trainer it should help to see which is the more likely real power.
And/Or you can setup your kickr so that it is controlled directly by the power reading of the Assiomas.
(Not via Zwift but directly pairing your power meter to the kickr.)
Are the pedals torqued to what they recommend? I had a similar difference between pedals and my Wahoo Kickr Bike Shift, once I tightened my pedals a bit more it brought the difference down a few percent.
I’m actually experimenting with that right now. Well, experimenting with tightening the spring used for clicking in your pedals of that’s what you mean.
I haven’t tried to screw them in more, because I’m afraid that I will over do it. Is that what you mean by tightening?
Thanks for the answer. So far this didn’t result in anything yet.
UPDATE: I have tried to do a factory reset, this didn’t result in any difference. Next to that this was quite buggy and frustrating.
I haven’t tried another trainer yet. I have tried to tighten the setting for the clicking in of my shoes into the pedals. This also didn’t result in any difference.
I used to have a Kickr V5. I upgraded to a Kickr Move. I had the move for awhile, but it always seemed like my power was lower. (Which was possible, since I had just came back from some health issues, so maybe I have lost some fitness). Decicided to put my assioma’s on to compare.
I had the exact opposite results to you. My pedals always recorded 10+ watts higher than my trainer. I checked everything more than once. Nothing changed. So I’m guessing that your trainer is out by a bit. I decided it doesn’t really matter. I’m just an old guy trying to improve my health span. I’m only comparing my numbers to myself.
Pedals should read slightly higher than a trainer as some of the power will be lost to the drive train. Not a huge amount but there will be some lost in transferring the power from the pedals to the trainer
if you mean the factory spin down…it is a relatively straight forward process which should not be “buggy” or frustrating.
It’s just like two normal spindowns, hidden behind a secret entrance.
Welcome to the Forums! I really appreciate you reaching out to discuss the differences you’re noticing between your Favero Assioma Uno and your Wahoo Kickr Core. It’s completely understandable to have concerns about this.
It’s important to take into consideration that all power meters come with a certain level of error margin. When you compare two devices, both of which have their own calculation algorithm, it’s not uncommon to see some discrepancies.
To get the most consistent results in your training and track your progress, it might be beneficial to choose one device as your go-to reference point.
As mentioned in the discussion, it could be helpful to check how other devices or trainers compare as well, which might help pinpoint the cause of the differences you’re experiencing.
If you have any more questions or need further assistance, please don’t hesitate to contact us. We’re here to support you!
No, I mean where the pedal attaches to the crankarm. This needs to be torqued to the manufacturer recommended amount. I found that it does make a difference, but it may mean you’ll need to invest in a suitable torque wrench and adapter.
In case you aren’t aware: Check the crank arm length on your Garmin if you haven’t done it, as this will take presence over the setting in the Assioma app, so if your cranks are 170mm and this is what you have set the Assioma app to, but on the Garmin they are 175mm, the latter will be used.