Fairly new to cycling/zwift. I’m wondering if the grinding/vibration i’m hearing on my Zwift Hub is normal?
clipchamp . com/watch/nd57XicXmph
clipchamp . com/watch/wryUP023nMg
I’ve spent hours trying to index gears and adjust the rear derailleur. I have an 8 speed bike and I bought the exact cassette i use on my bike and installed this on the Hub (with spacer) along with a new chain.
Is the noise within the limits of reasonable? It is especially bad in the smallest cog (fastest gear) and causes huge vibration, bad enough that i don’t want to use these gears (which is a nightmare on descents/flats). Hopefully the video is clear.
I spoke to Zwift support, who weirdly sent me a new Hub. Unfortunately the grinding/vibration is still there so it’s certainly a problem with my drivetrain over the Hub. Is there anything I can do to prevent the grinding in the small cogs?
Thanks for any advice!
I didn’t open your links as they’re hosted using a service I’m unfamiliar with. I’d suggest YouTube or Imgur.
Start here: How to Adjust a Rear Derailleur – Limit Screws & Indexing - YouTube
…or enlist the help of a professional bike mechanic.
EDIT - @Steve_Hammatt pointed out ClipChamp is under the Microsoft umbrella - just watched and listened.
Those vids suggest a minor indexing issue to me. I’d start with that.
Clipchamp is part of Microsoft.
Thanks for watching both. I’ve spent a while indexing and that’s the best i can get. A couple of people have mentioned they experience the same with their trainers (e.g. forums.zwift. com/t/zwift-hub-grinding/590950), perhaps it’s something i should just put up with.
Acid test: remove chain and cassette from bike, install on the trainer. (eliminates “the entire drivetrain” from the equation)
check the axle adaptors on the trainer to ensure they’re not too tight or loose, and not cross-threaded. (some reports of badly machined adaptors)
bent derailleur hanger? (if you’re not having the issues on your bike, this seems remote)
I will try it with my exact bike cassette and chain rather than the new ones i bought, thanks for the advice.
My bike has 2 front chain rings and I am using the big ring when in highest gear. Issue is worse when in the little ring but not too concerned about that since i would never use that gear.
chain and cassette are exact copies from my bike
shimano hg50 11-32t, 8-speed
KMC X8, 8-speed
I’m sorry to hear about grinding/vibration in your Zwift Hub! Please refer to this article on the Zwift Support site: Zwift Hub is Making Noise.
I hope it can be useful!