Just changed my chain and cassette on the turbo bike, well cassette is attached to a wahoo kickr.

Cleaned everything down, lubed as usual, refit and now im getting a very weird low frequency vibration under power, only at the top of each pedal revolution.

Any ideas what could cause it? Never noticed it before however the old chain cassette were totally worn out. Its really annoying and feels like its that kind of rumble thats going through the whole house.

Feels like its the trainer rather than the bike, but i haven’t altered anything on the trainer – unless I’ve got a duff cassette?

Chainring worn out and not liking new chain.