Using latest Android app, Samsung Galaxy Tab S 9+.
On a Kickr Core v1.
It’s jumping between 40-50 up to the actual 90-92rpm.
If you have a username like “taxguy” I think your Wahoo is gonna complain. No. I believe, I remember most people saying that the Core 1 V1 had cadence issues. Just Google tells me that there’s some issues, but I don’t know for sure. It’s possible that other apps have longer smoothing algorithms and figure out how to make it look better. I wouldn’t think it’s a bug but you never know. I never saw any cadence issues with my Kickr V5.
So I’m not sure what to say. We could start doing some tests if you want. You could test our web page.
I’d be happy to test with you guys to see if we can figure out out. Just let me know what to do.
(And yeah, I also have a Tacx, hence the name, 
)
What is your gear ratio? Wahoo trainers cannot reliably recognize correct cadence on ratios of ~1.4 or lower - they will usually report half of real cadence.
For ERG mode - just shift to higher gear…
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Let’s first see with his solution and see if that fixes your problem.
Thanks for the reply but I don’t think that’s it. I have it on the 34T in the front and 17T in the back. That’s 2 which is greater than 1.4.
Yeah, 34:17 should be fine… but I switched to a separate cadence sensor anyway - they are cheap and reliable 
Any thoughts? It’s still doing this and it messes up the numbers to give to my coach
My guess is that you will want to buy an external cadence sensor. I’ve heard problems with these core devices for a long time. Most people seem to buy one.
But if you want, you can go to this site, connect to your trainer, pedal for a while, record and download the file and send it to me.
Just click download report and send it to me, try to make sure you see cadence irregularities. send to support@trainerday.com
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