Loud rumbling noise and gritty feel with Zwift Ride and Kickr Core

Bugs and Support
1

Hi everybody - I’ve been riding a standard Zwift Ride and Kickr Core setup for about 100km and I’m a bit disappointed so far… From the start, there’s been a very loud rhythmic rumbling noise and a gritty, sandy feeling on the pedals - I kind of “feel the noise” for lack of better words, especially when pushing downwards. I recorded it but I’m obviously not allowed to share links therefor sorry for the space but it’s hard to describe without listening to the noise ht tps://youtu.be/4BbtiNhXP0M?si=wTxltGZpX_DEaMdU

Isn’t that pretty loud?

… it gets louder with higher resistance. Additionally, the chain seems very loose. And the pictures online show the Cog V2, but I received the black V1 …

But by far most annoying is the rumbling noise and the gritty feeling. Does anyone have any idea? It’s really spoiling my enjoyment of what’s otherwise a great tool.

  • Has anyone else experienced similar problems with this setup?
  • Could the loose chain be causing the gritty feeling?
  • Should I try contacting Zwift or Wahoo support?
  • Are there any adjustments I can make to reduce the noise and improve the feeling?
2

Servus Steffen,
klingt sehr danach: Zwift cog suddenly makes noise and cannot freewheel anymore

Du benötigst auf beiden Seiten den jeweiligen 142mm Steckachsenadapter für den Core. Der auf der Antriebsseite wird gerne vergessen. Beim Anziehen der Steckachse verspannst Du dann den Freilauf mitsamt dem Cog ohne diesen Adapter.

Wenn Du das Bundle aus Ride und Core kaufst, bekommst Du aktuell noch die Cog Version1.

Edit:
Hätte erst das Video angucken sollen. Dein Freilauf scheint zu funktionieren, deswegen denke ich, dass Du beide Adapter verbaut hast.
Ist das Kettenblatt vorne gerade? Es gab etliche Berichte, dass manchmal das Kettenblatt verbogen ist und die Kette somit am Rahmen schleift?

3

Servus, danke für die Mühe! Auf den ersten Blick sieht das OK aus, nur die Abdeckung scheint etwas gebogen. Die Kette läuft vielleicht minimal unrund aber nicht wild würde ich sagen … ht tps://youtube.com/shorts/egy7dTd-HYM?si=czVU9sEZ-8O6aHrp

4

I double checked the adapters, both sides fine - and tried to catch the sound again. I do only hear it with headphones though. Wroom wroom wroom … and it feels ecactly like that in the pedals ht tps://youtu.be/3C5A_omi9CQ?si=ouKpZFuBwmar24fl

5

Looks like I get replacement. They think it’s the bent sproket issue … I wrote to support@zwift.com

1 Like
6

Hey! Did you get your replacement and there was less rumbling? Your bike sounds just like mine!

7

Hi Robyn, yes I contacted support@ and got quickly and easily replacement of the Ride. Noise got better but rumbking not fully away. Will replace Cog V1 as well - should receive it today and report … of thesis bit working as well I’ll proceed with a closer look into the Kickr …

8

Hi Steffen, I have just purchased a Zwift frame and seem to be having the same issue, did you ever get to the bottom of it? I noticed you mentioned it hadnt fully gone and you were going to check your kickr? not sure whether its my kickr as I had my road bike attached previously and that maybe something to do with it, thanks

9

Hey Rhys,

Welcome to the forums! Thank you for sharing your question. This is Alejandra from Zwift.

I wanted to follow up on the issue you were facing, and I see that you’ve already received help since you opened a ticket. I hope the replacement resolves the matter. If the issue continues after you receive the replacement, please don’t hesitate to respond to the email.

Have a nice day.

10

Hi,

Kickr is the only thing i did not change … biggest difference made the change to Cog V2 …