Wahoo trainers with Virtual Shifting Issue: "Free Watts" | October 2024

@Chad_Connell @S_A_ccc

Can you please continue your debate somewhere else?

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my sincerest apologies milan. iā€™ll grow up one day, hopefully.

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Still having free watts despite the 2 recent updates + 3 spindown with the new ā€œbetaā€ app ā€œwahoo pro spindownā€. Quite frustrating that Wahoo nor Zwift are unable to fix this bugā€¦

Hi Pierre

Have you performed the Factory Spin down in the official Wahoo app.

What was your braking factor, your unit may be out of tolerance?

Hi Steve,

I havenā€™t tried the factory spindown in the official Wahoo app since I got a Kickr Move and wasnā€™t supposed to do so. A friend indicated me that there was a beta app named ā€œWahoo pro spindownā€ that I was supposed to do to perform a spin down with the Move. Thatā€™s what I did.

Iā€™m not sure what you mean by ā€œbracking factorā€?
On Zwift, with the Zwift Play we can choose to reduce the brake option to zero if we donā€™t use it. Thatā€™s what I did. But since I didnā€™t connect my Move to Zwift to perform the factory spin down with the app, it mustnā€™t be thisā€¦ ???

that might explain why you are still seeing the ghost watts.

There were release notes with the firmware. Youā€™ll need to do a Factory/Manual spindown.

This should clear the issue and will report back your braking factor. Which I believe is the friction in the system.

Thank you Steve. Iā€™ll try this tomorrow (I didnā€™t had this information previously). Iā€™ll let you know if itā€™s work (I hope so!)

Unfortunately this did not work for me. Did it work for you? Do you have the Kickr Core?

Iā€™ve got the V6.
So far it seems to have worked. My brake factor was 1.08. I emailed Wahoo and they said this was within tolerance.

Zwift World Series has been immediately suspended due to this issue. ZHQ is working with ā€œall the relevant hardware manufacturers.ā€

My understanding is that the list is as follows:
Wahoo

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Is there a communication somewhere about this?

Yep, Iā€™ve seen a copy of the email today.

The race scheduled 5th December has been postponed due to a high volume of hardware issues. It doesnā€™t specifically mention Wahoo. But Wahoo is only on of three approved manufacturers for Elite racing.

Zwift also says its not a Zwift specific platform issue - which is true - But its the implementation of virtual shifting with Zwift platform that has highlighted the ghost watts (power offset) issues with the KickR trainers.

They are giving manufacturers time to resolve the ā€˜edge caseā€™ issues and release firmware updates

Hi, does anyone have a persistently higher watts using the zwift cog and click? Itā€™s about 12 - 13 watts consistently higher on a workout that I did this morning. I initally thought that Iā€™d maybe tightened lock ring too tight and going to give that another look tonight. First time I did it I actually snapped the plastic lock ring so Iā€™ve asked Zwift to send me another one (donā€™t know if they will or not?) so Iā€™ve currently just got a metal lock ring on currently. My next thing is to try the old cassette to see if that works better if the lock ring makes no difference.

Also, if I return to the original cassette can I use zwift play and somehow disable virtual shifting?

ie for steering

Yes you can use a normal cassette. The choice is yours.

I ride with a 9 speed Shimano cassette, and have used the Click for virtual shifting and also turned off virtual shifting and gone back to mechanical gears.

The watts power offset should have been rectified by the latest firmware.

What firmware version are you on and what was your reported brake factor after completing the factory spin down?

Hi Steve, thanks for the response. Iā€™m going to try and reassemble the cog tonight to see if thatā€™s my problem - ie if the lock ring is too tight. Iā€™m on the latest firmware, Iā€™m sure of it as it did the update when I set it up. Iā€™ll check the brake factor when I do another factory spin down.

Is it possible to use steering on zwift play with virtual shifting off?

Peter

yep, thereā€™s a setting in the game where you can toggle off virtual shifting.

From memory its under hardware. Then you can still have the Plays connected for steering and menu buttons.

If you want the plays just for steering, I can recommend an Elite Sterzo. But if you want all the shortcut buttons then the Plays are the way to go.

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Hi all, I got the Zwift ride, play and core last week and have been plagued with this since. I installed the latest firmware straight out the box. I did a factory spin down on Thursday evening (braking factor 0.92), which cured it, then did a race Friday and was pleased to see it wasnā€™t an issue at the start of the race, although came back 10 minutes into the race.

Has the theory that the auto calibration is causing it, rather than curing it, been explored?

I read the article, and it was not because if this issue, but others. Att least my understanding