Grinding gears with Zwift Hub

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1

Hello,
I received my Zwift Hub a few weeks ago and wanted to give it a try today.
While mounting it and installing the bike was quite straight forward, I really struggle with grinding gears.
I don’t have issue when switching gears but I got a hell of a noise when giving higher watts and the whole bike feels like shaking.
Note that I have installed the exact same cassette as I have on my bike (Shimano 105 R7000 11/32)

I tried different things live remove/reinstall the cassette, and indexing gears.
(I have a video but can put the link here)
What can I try? Is it an issue with the hub itself?

2

I think I have the same issue with mine right out of the box. Some thing seems to be grinding inside as well. I bought 2 zwift one hubs. One works fine.

Did you ever get a reply? Were you able to get this fixed?

3

I suggest contacting support. Also swap bikes on the two trainers so you can rule out mechanical differences.

4

Thank you for your reply. I contacted support. I not only swapped bikes, I also swapped trainers. I ordered 2 trainers. Hopefully they help me out.

Were you able to get your issue fixed?

5

Hi @L_V_M, Welcome to the Forums!

I’m Fernanda from Zwift. Thank you so much for reaching out to our support team about the issue with the Hub. I’m really glad we could help, and our email team will keep a close eye on your case!

Ride On.