Originally Posted by
alij2018
Hi, first of all, watch the video on the link below for my issue.
https://www.filemail.com/d/ugbekzuviaibvfa
As you see, my chain slips on the first cog. It also slips on the second, third and fourth cogs while pedaling.
My chainring has been replaced on last November and I rode around 2,000km with it.
My chain has been replaced last month and I rode around 300km with it.
My cassette is quite old. I rode around 9,500km with it. However, the first and second cogs only have been replaced last month.
My jockey wheels have been replaced and I rode around 300km with it.
My chain is properly lubed and cable tension is alright. No issue with derailleur nor bend on the derailleur hanger. Chain link is ok too.
I am still in lost what is causing the chain to be slipped.
Someone can help?
This is a classic case of a new chain and a worn cassette. The way to find out if a cassette is worn is if the chain skips when a new chain is installed. You need a new cassette, and don't ride this combination much because the worn cassette will result in a chain that will skip on a new cassette.