Exactly so. How hard would it be for Zwift to do a tiny bit of research, and put bike models that are only estimating power into a table that only qualifies them for zPower races? Maybe this is done for some models already? Either way, the problem is that someone buying equipment to create a Zwift setup, isn’t informed appropriately beforehand.
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Zwift saves the ride in Zwift and shares with strava.
My CooSpoo computer records and saves ride to the CooSpoo account.
Normally, when riding outdoors, I have CooSpoo share rides with Strava.
This way, indoor and outdoor rides go to Strava.
Strava shares with Intervals so by controlling Strava, I control the data that gets exported to Intervals.
When I dual record, I cancel the authorization for CooSpoo to share with Strava.
I have to remember to reauthorize this permission when going outside.
It’s easy to do and takes 10 secs once you know where the menu options are on your app.
It’s just another step of dual recording.
Most the time, we allow an app to share with Strava and forget.
It’s not hard, we’re just not used to it.
To do that I would have to either buy a third power meter or replace the trainer bike. I like racing but I’m not sure it’s worth that especially since my race participation has gone down lately and I’m doing junior-varsity races with one of the most popular mainstream trainers. Outside of elite events, that has to be adequate.
We can mentally picture how a crank based or pedal based power meter determines force.
We can picture how a ZPower wheel attempts to do so.
We can picture the fluid trainer pushing oil through a fixed orfice.
The system that everyone seems to be giving a pass are the smart trainers.
Are these magnetic or different?
It’s one thing to apply resistance, then they mimicked hills.
Initially there was a lot of bad smart trainers and now we have added on virtual shifting.
The March of technology does not mean that every fluid trainer is now inaccurate and every smart trainer, with or without virtual shifting, is automatically superior.
QZ app can spoof trainers.
So could the HR2VP app, but Zwift blacklisted this.
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Maybe my statement should be, dual record for questionable performance?
I don’t know.
Maybe dual recording is one of the answers but not necessarily the answer.
Dual recording is not possible either for everyone. Theoretically I could but as I ride smart rollers and do not want to downgrade back to my kickr the power the secondary power would be very inaccurate…
Dual also isn’t the answer for the non-race situations like KOMs and Segments, as it would raise the cost barrier just to get involved. The idea above of restricting those lists to smart trainers/power pedals/cranks would be good enough. (So long as they don’t clamp down as hard as they do on those white lists for elite racing, where my H3 isn’t allowed 
)
Honestly I think that there are many many many people with kickrs and virtual shifting without the latest firmware that fixes the 0 offset issue (and therefore their power reads 25-35W too high…)
Kickr sends out firmware version.
Zwift can if they want make an algorithm that put non updated ones to Zpower
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Because people can ride without calibrating? Or weight dope? 
If you use it right, it gives good numbers. Cheaters gonna cheat.
Granted my 2018 CycleOps Hammer reads about 10w different that my Rotor INspider PM without calibrating both this morning. That company doesn’t even exist anymore let alone able to push updates to ensure accuracy. If I told my SO that I was going to buy another trainer while this one still works, I might be sleeping in my car.
Calibration/spindown doesn’t have to be done that very often to be within a good acceptable range of tolerance.
The problem is that many can be manipulated during calibration, there among the H3, and that is what we see from that 60+ gentleman posted.
People mostly use zwift a a training platform, and let them use whatever equipment or app they want for training, but let there at least be a few races with demand for accuracy, sticky detection, native dual reading etc.
Let the races be as much race like as possible
The argument “cheaters gonna cheat” is valid enough, but no reason to make it easy.
Small effort from Zwift would eliminate most of the phoney numbers.
And no reason for the ones who only use it as a training platform to cry about it……they don’t race anyways
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May I ask where do you get the equipment information shown on the left side. Especially the “calibration” field. We tried to fish that out of fit files to no awail. Could not even confirm if that information is transmitted.
Not going to disagree–and tbc I’m not complaining about my H3 not being included in elite racing. If I was elite, I’d get something else It works for what I want it to do, and it’s accurate when calibrated. My point about KOMs and Sprints and Segments was just that if they were to pay attention to those and white list/black list trainers, those shouldn’t be taken so seriously as to exclude legitimate smart trainers, even ones not included for elite racing.
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That would be the https://dualrecording.tpvirtualhub.com/
Training peaks has native dual reading.
My point is. The equipment sends out hardware/software info, but to the device recording.
If I take a fit from my garmin, it would say Edge 530 and nothing more
If I take a strava fit, it would say nothing
BUT. Zwift can chose to store and use this info
That would tell if your kickr is up to date
It would tell if your trainer is PM controlled etc.
There is a lot of tools Zwift could use if they were interested
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interesting. What we tried to find out is the slope factor set on power meters. If this information even leave the PM. We know trainers report if they are PM controlled and this information can be recorded but as you say most platforms and devices simply ignore it.
“calibration” shown in above web page may not be the slope but the TPV calibration outcome. I will test it tomorrow.
https://www.fitfileviewer.com/ on the other hand shows known devices and their calibration factor but I never seen anything other than “500”.
For example pink powermeter has a slope of -6%. Black one is 0%
Hard to tell from these fields.
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