Issue calibrating new Tacx Flux 2 to Zwift

Hey there i’m new to Zwift having just purchased the Tacx Flux 2 Direct Drive trainer. I tried to calibrate the trainer to Zwift after it automatically paired itself and the calibration keeps getting an error. I’ve downloaded the Tacx App and have managed to calibrate the trainer to that, however, i’m still get the calibration fail from Zwift.

Any help with this issue would be very helpful, given that this is all new to me it’s a little overwhelming trying to level up my education to ensure this all runs smoothly.

Mikael:

It’s okay to use the trainer without calibrating in Zwift. The Zwift calibration is only an alternative to using you trainer’s own calibration app. In fact, originally Zwift had no calibration in game.

I have not used a Flux 2 trainer. Someone else might give further information about why you’re getting an error in the Zwift calibration function.

Meanwhile, I believe you can ride on in Zwift without worrying about the calibration fail in Zwift.

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Thanks for the info Steve.

I was hoping this might be the issue I can’t complete an FTP test. The wattage keeps spiking from 0 up over the redline (whatever it’s set to). Really strange!

That does sound kind of strange. If you continue to have this issue, please write in a support ticket and we’ll further investigate.

In the meantime, it may help to check for wireless ANT+ or BLE interference (depending on which one you’re using), and to check for a firmware update by using your Tacx Utility app. :slight_smile:

Thanks!

I have the Problems too. Apple TV 4K and the flux 2. Spindown calibration doesnt work.
With Tacx App no Problems.
Greetings from Germany.

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Hi
I also have the same issue with the tacx flux 2. When trying to calibrate it, it Fails everytime. I pedal till 37km/h then stop pedaling… and at the end always the same message: calibration failed.
I also have the feeling I dont feel the downhill much compare to my previous trainer.

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Hi All,
I also have the same issue with the Tacx Flux 2. When trying to calibrate it, it Fails everytime. I pedal till 37km/h then stop pedaling… and at the end always the same message: Calibration Timed Out! FAILED.
Then I can see problem in speed - I keep same cadence, same wattage but suddenly speed goes up or down… Wattage and cadence correspond to Garmin Edge or to Tacx App, but speed no…
Could you advice please?

Same problem for me, any solution on the Calibration Timed Out issue?

Same problem here, Tacx NL is telling me it is a known problem which should be solved with a firmware update.
With so many people having these problems one might think that Tacx and Zwift might want to cooperate for a solution?

I’m having similar issues & have raised a ticket with Zwift. I have the Tacx Flux & today I have tried & failed to achieve the Zwift calibration spin down 20+ times - very frustrating. I’ve checked with the Tacx app that I have the latest firmware & that’s correct. I’ve also calibrated the trainer through the Tacx app with no concerns. Can anyone tell me if by not calibrating through Zwift if it will affect my in game experience? Surely Zwift must be able to sort this out as it’s clearly a bug their end. Any help would be greatly appreciated!

The Flux just needs to be calibrated. Use your app of choice to do the calibration.

Thanks Steve,

Zwift have just replied to my ticket & they have said to ignore the Zwift calibration request as Zwift doesn’t support Tacx calibration & they have no idea why Zwift is asking for it🙄. Thanks for the reply.

I am using a Tacx Flux (model 1) and have The same issue.
It is not possilble to execute a succesfull calibration.
Ain Rouvy and Tacx, no issue at all.

Well I’m joining the Team Calibration Failure.

I have the exact same issues. My read from the forums is to ignore Zwift and use the Tacx Utility App

Also, the cadence is not a direct measurement from the Tacx, it’s an ESTIMATE. If you see poor cadence numbers vs what you are pedaling, dump the cadence with Zwift/Tacx and go with a standalone sensor on your crank arm

I have the same issues with calibrating the Yacx Flux 2 to Zwift via apple TV

Problem if I ignore it and climbing the cycling doesn’t go automatically heavier.

[quote=“Mikael_Austin, post:1, topic:97264, full:true”]
Hey there i’m new to Zwift having just purchased the Tacx Flux 2 Direct Drive trainer. I tried to calibrate the trainer to Zwift after it automatically paired itself and the calibration keeps getting an error. I’ve downloaded the Tacx App and have managed to calibrate the trainer to that, however, i’m still get the calibration fail from Zwift.

Any help with this issue would be very helpful, given that this is all new to me it’s a little overwhelming trying to level up my education to ensure this all runs smoothly.

Hello,
one more on the list for this problem, contacted zwift but after
reading the comments here
i won‘t expect much of a reply…
ride on :grimacing:

If you calibrate with the trainer app then you don’t have to use Zwift for calibration. In fact it is preferred to use the trainer app.

Same issue here with exact the same symptoms running my Tacx Flux 2 with Zwift, calibration fails with “timed out” error, furthermore, I believe this causes workouts to work wrong, causing dumb situation I cannot spin 50-11 with higher than 250W with 110 cadence (for example FTP test with ERG mode)

Have you tried calibrating using the Tacx Flux 2 app?