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Cadence irregular on Zwift

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 ?

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0 Former Member over 5 years ago in reply to krazyeone

Sorry, but there are so many bikes/cranks out there. Just email them and they'll send you a (not improvised) crank extension. The underlying technology has many advantages, but this is one of its limits. As I read about the 2/2T and their advertised cadence sensor (before actually buying one), I immediately thought this could be a problem with my bike. Its more about understanding technology: there is no problem in showing you the cadence data from the internal sensor (same as in the NEO OG), but people demand more, like left- right balance, cycling dynamics and so on...

0 Eric over 5 years ago in reply to 7261767

This zip-tied solution from Tacx is only good if the bike is a permanent fixture on the trainer. It should be possible to use doubled sided velcro tape instead of zip-tie so the extender can be easily fitted and removed on an outdoor / indoor bike? And what about fashioning an anklet or heel attachment on the shoe?

0 Eric over 5 years ago in reply to krazyeone

The Neo 2 / 2T has a real sensor to detect the movement of the crank to calculate cadence, unlike the pseudo / estimate cadence on other trainers. With so many frame / crank geometries out there I guess Tacx had to find a best-fit location for the sensor which will not work for a small number of people. If you want a fool proof design than go with an inferior trainer.

0 Former Member over 4 years ago

I used mine for the first time today and it wasn’t jumping but showed (on Zwift) a pretty constant 67rpm when I counted 85-95 true rpm. Did you find a solution?

0 Former Member over 4 years ago in reply to Former Member

Cadence sensor is not good at all

0 Former Member over 4 years ago

I have the same exact issue, cadence sensor keeps dropping and it is not on Zwift only happens when I connect it to Garmin Edge as well so the issue it with the Neo2T itself. Did anyone found a solution yet? please that is really frustrating

0 Case over 4 years ago in reply to Former Member

Not a real solution, but a workaround is of course mounting a cadencesensor on the crank. Does not work with the Tacx software There are cheap ones to get in China.

0 Former Member over 4 years ago in reply to Former Member

Did you read the thread above? A possible cause could be the geometry of your bike and/or your crank arm being too far away from the NEO 2T sensor. Just write to support and they provide you with a crank arm extension.