Kickr Core not smooth in Climbs

Bugs and Support
1

Hello everyone,

I have had a Kickr Core for a few days now and am very satisfied. However, I have a strange behavior when riding uphill.

At a low cadence of e.g. 60rpm and approx. 170-200 watts on a 10% incline, I can no longer pedal completely smoothly when I’m in the easiest gear (36 front, 34 rear). Trainer difficulty is at 100%. It feels like falling into a hole at the bottom of the crank rotation and having to pedal beyond it.

Have you ever had an issue like this?

Thanks for your help!
Marcus

2

The standard advice is to use the Wahoo Fitness app to check for firmware updates, perform a calibration, do a ride using the Wahoo app (or SYSTM), and see if you can replicate the problem there. If so you can talk to Wahoo support without the risk of any finger pointing between Zwift and Wahoo.

3

Hi, have You solve the problem?

4

No, unfortunately I couldn’t solve it.

However, I now have a Jetblack Victory that exhibits identical behavior. I guess it’s due to the low speed of the flywheel…?

Do you have the same problem @Luca_Lodolo ?

I didn’t have this problem with my Tacx Flux S, nor with a Tacx Neo 2T (I’ve tested a lot of trainers recently… )

Would be great if some experienced Zwifters could say if they have experienced similar issues…?

5

I have had similar issues with an H3 but with a little lower cadence and higher watts. Note I am at 100 kilos. I think this is the edge of performance of the flywheel/trainer. The trainers tend to not like low rpms. My resolution is to lower the Trainer difficulty to get the unit to spin faster. That smoothed it for me.

6

I haven’t found a solution yet. The strange thing is that when using ERG mode, at very low cadence and high power, the problem doesn’t occur. The problem only happens in free mode.