Originally Posted by
JohnDThompson
Have you cleaned/lubricated the chain recently? If not, do so and report back.
Yes I did. The noise is there whether the chain is clean/lubricated or not.
The vibration can be felt if I touch the frame and saddle when the chain is moving. Maybe the chain isn't making "proper" contact with the cogs' teeth? This can happen when the chain is old and cassette is new maybe, but all the parts I have came with the bike. BTW, I did around 1500 km/ 1000 miles on this bike.