When I was riding, I heard a noise that sounded like there was a pebble stuck in my tire while I was coasting. I took the wheel off the bike. When I rotate the cassette with my hand, I can hear the normal "click, click,click, click" and then a "clunk" that sounds different. Is there something wrond with my bearing? It is a DA 10-speed cassette. Thank you.
im having the same problem on my mountainbike as well. It only happened when water get inside the cassette for example when i try to spray off those nasty mud. It happens too when it was raining. The sound will go away when things/weather got dried up. funny.