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Cadence irregular on Zwift

7261767
over 5 years ago

Hi, I just got my Tacx NEO 2T yesterday.

After installing everything, I did a FTP ramp test on Zwift to try it out.

I noticed a strong fluctuation in cadence on ZWIFT, although I was pedalling at a constant rithm, around 85-90 rpm.  

But you can see in the picture below that cadance is often falling down, more so when power increases.  During the cooling down (70 watts) it seemed more accurate, but still a bit jumpy.

I haven't tried it yet with the tacx training app, so I don't know where the problem lies.

Anyone experience the same issue, and better yet, anyone have a solution ?

  • 0 over 5 years ago
    • I know that they have to release a new firmware e in these days that fix many issue with the ant+ metrics
  • 0 over 5 years ago in reply to dash1e

    it is inbuilt cadence sensor issue, the sensor is not seeing your leg movement enough (your leg is outside of the sensor range ), or the sensor is faulty. check your firmware version with Tacx Utility app, if it is 0.0.31, that is the latest, and after it go to the dashboard menu in this app, and start to pedal for 10min and check the dashboard is there no any error message like this: https://tacxfaqx.com/knowledge-base/neo-2t-cadence-sensor-overheating/ 

  • 0 over 5 years ago

    and how do You use the Zwift? how is your pairing screen in Zwift? (screenshot pls) on PC with ANT+ stick? if yes, there is a log file in Zwift\Logs folder ( log.txt is the log of the latest zwift seesion, and  log(number).txt is the previous one) , upload here this log file, maybe it will show something about the problem.

  • Former Member
    0 Former Member over 5 years ago

    Contact Tacx Support, they will provide you with a set of their specially designed metallic plates and/or a cadence sensor. The plates are supposed to boost your feet tracking.

  • Former Member
    0 Former Member over 5 years ago in reply to Former Member

    At least they promised me to do so. While waiting, I'm using my DIY crank extension, which works like a charm. No cadence dropouts whatsoever.

  • 0 over 5 years ago in reply to Luko79

    I use bluetooth . I haven't had time to test it again, but I will look at the pairing screen. 

  • 0 over 5 years ago in reply to Former Member

    I will contact Tacx support,  I also think my pedals don't reach the sensor.

  • Former Member
    0 Former Member over 5 years ago in reply to 7261767

    Ok hand My tracks looked EXACTLY the same

  • 0 over 5 years ago in reply to Former Member

    I've just contacted Tacx support via mail.  Curious how they will react.

    However,  I've noticed that cadence seems to be more (but not sufficiently) steady when I stretch my left heel backwards as much as possible on the up stroke. But this position is very uncomfortable to ride in.

    So I still think it's due to not reaching the sensor, in stead of a bad signal.

    But I hope the experts will know best.

  • 0 over 5 years ago in reply to 7261767

    Yesterday Tacx support replied via mail.  They told me there was a firmware update that would resolve the problem.

    I upgraded my system to firmware 32 if I remember well.

    Then I did a short three minute ride, where I tried different cadances.  The result was still dissapointing.

    I got the impression that the last recorded cadance was maintained for a while when the signal drops, because the number stayed the same for several tens of seconds, althouhg I slightly changed cadence.  When I ride on the road with a cadance sensor, the number is rearly constant, and fluctuates always lightly.

    The cadance also dropped completly, or was way underestimating as you can see in the graph below. 

    Still hoping for  a solution from Tacx/Garmin