My Right/Left balance from NEO 2T are very different from one leg to the other. Where Vector 3 give me a result of 51/49, the Tacx 2T NEO give me a result of 55/45.
the Vector has true balance (left balance = only your left leg ), the Neo2T has pseudo balance only (left balance = left push phase + right pull , right balance = right push + left pull, like spider based powermeters: Quarq and Power2Max are working the same, so dont panic, both values are good just the calculation method is different )
I also see vastly different balance between the Neo 2T (0.0.31) and Garmin Vector 3 pedals. The results are so different that I wouldn't call them good or useful yet. It's clear that the Neo never will be as accurate but I hope they can improve this in future firmware updates.
See https://analyze.dcrainmaker.com/#/public/59ab9711-50ab-4c9b-7087-2e8f3aa24c3e (4157235386 are the Vector 3 pedals, 4157235489 is the Neo) for an example with 30s smoothing. This comparison also shows that firmware 0.0.31 over-reports power at low intensity and large gears in ERG mode. Still an improvement over 0.0.27, though.
how do You know that Neo overreports the power and not the V3s have issue and underreport it as time goes by? what kind of gear did You use over the test, a fix one or variable gearing? Or are these steps a gear down and as You geared down at rear the power difference started to increase?
Because I did a torque test (https://support.garmin.com/en-US/?faq=AVZeQisZvi3oBYZUUZdPV6) on each pedal
okie ( i made these calibration with 20kg, heavier is better! ) , and what was the result of this static calib? didnt need modify the scale factor?
and Do You have power difference also as jk has between 2T and V3?
back to the balance question, use the V3 balance only, and ignore the Neo2's one, it is only estimated and never will be accurate
but they never wrote that the L/R balance means true balance as pedal based power meter has... Quarq, Power2Max also advertise that their powermeters have L/R balance but those are same estimated L/R balance only, it cant be true L/R balance, the design of the Neo or the spider based pm not able to do it (the Elite top trainers have same estimated balance and their cadence is estimated also!!! ), that's all. It is a feature, and that's all, as Garmin watches have recovery time advisor and with user A it is accurate , with user B it overestimate the reco time, with user C underestimate... :)
honestly, the Tacx leave that ANT+ SPD/CAD sensor in the Neos needlessly as option, because it is not needed, if You pair with your Edge as indoor trainer , You have all datas through 1 pairing...
>>> but they never wrote that the L/R balance means true balance as pedal based power meter
Are you joking? If I have a metrics from a sport device it's because I use that metric to fix some of my attitude, posture or quality. I trust that metric to base my training also on it.
I trust in HR value, in Power value, in Cadence value, and in L/R balance value. For all of them I accept an error margin, but that margin have to be acceptable.
The product sheet (tacx.com/.../) says:
Output: Cadence, Power, Speed
Accuracy: < 1%
And a specific section on the same page says:
PEDAL STROKE ANALYSIS
The NEO 2 was already equipped with a capacitive left and right detection sensor that accurately measures the exact position of both your legs. By adding standard ANT+ Cycling dynamics, you can now analyse your pedal stroke via the software of third parties; for example on a Garmin Edge bike computer.
I can wait, no prob, I can wait for fixes, but the important thing is to recognize that this is something to fix.
And I don't write here to be argumentative or to argue, simply to find solution, also temporary solutions, that maybe someone else have found. That's all.