What are your experiences with the accurate power meter on the Kickr BIKE v2?
Has anyone done dual analysis with Assioma power meter?
I have Assioma PRO RS-2 power meter and I did some duals… The result surprised me…
I think such a deviation is not acceptable!
The differences are also 4% and more
Do you have similar problems? How did you solve them?
Kickr Bike - Wifi direct connection
Assioma - Ant+ to Garmin Edge
Which is higher? 
A consistent 4% accross the board or fluctuating?
If its 4% higher/lower all the way through, its not really a big deal as you can adjust to suit but certainly problematic if its occasionally +/- 4%
In principle, the average difference throughout the entire ride is 4%.
Wouldn’t you need to test with a third power meter to confirm if it is the bike or pedals that are correct?
I’ve got a Kickr Bike Shift and I compared it to some borrowed Garmin Rally pedals, I found the Shift recorded about 10% higher. But as I didn’t have another source to compare, I had no idea which was correct.
In the same boat:
Kickr Bike 2 - tested with ANT and with BT also
Assioma Duo - tested with ANT and with BT
Did several test runs back to back with 2 parallel Garmin head units recording (even changed them too back 2 back). For this the Zwift Power comparison tools could be a big help. Offcourse crank length was correct all the time.
Bike reports way higher power numbers, but this difference decrease as power goes up. My bike almost on pair with the Assiomas at or above 300-320W, and even reports lower than Assioma above 400W.
There is no solution for this, tried with the support but nothing worked, they were clueless in this case. They kept repeating that the Bike does not need calibration and it should be correct all the time. They asked for a ramp test (just few steps) made in the Wahoo app, but ignored my 2nd power meter source datas all the time.
For the winter i keep install the Assiomas to the Bike and use that as a power source. BTW i tried with the most recent Assioma generation too, and its the same. I have that which still has the pod on the axle.
SRAM Eagle powermeter was even worse, i had two on two different mtbs and they reported 7,5% and 8,5% more power by factory default. Luckily its easy to adjust them in the SRAM app. The newer SRAM T-type mtb powermeter was “just” 4,5% higher by default…But again, very simple to adjust powermeter slope to match Assioma 99.5-99.8%.
I have a KICKR Bike V1. I have been collecting and comparing data via DC’s tool and entering it in a spreadsheet. I have a lot of comparisons to my Garmin Rally XC 200 pedals which pretty consistently show that the KICKR Bike reports 4-6% higher power than the pedals. I recently purchased a set of Favero Assioma PRO MX-2 pedals and the data is shaping up to be the same. I am also building out data comparing them to a TACX Neo I use when I am away from home for work. I’ll post more when I have at least 10 or so data points for each.
You are also going to get different reading at the pedal vs the trainer on the back wheel.
Shouldn’t the power be higher at the pedals because it is the closest point to the input. Drivetrain losses should mean the kickr bike would yield a lower power value than the pedals not higher.
Yes, I must not have read closely. I have the KICKR5 and Favero pedals. I get about a 5% lower power at the KICKR. I use my pedals as the power meter source which corresponds nicely to the outdoors. Not exact but usable.
I started a support ticket with Wahoo this morning. My Shift is reading easily 10% lower than my 2 Quarq PM’s. The Kickr Core I came from was usually 2-3% lower than the Quarqs due to drivetrain loss.
I need to get my hands on a set of pedal based PM’s to verify but I was in Z3 HR riding easy Z2 watts.
I just use my pedal based power meter on my kickr bike V2 and powermatch. That way I get consistent readings inside and out. A minor pain in the ass compared to dealing with power meter discrepancies.