Originally Posted by
Re-Cycle
are you 100% sure you have a cassette and not a freewheel? If its a freewheel neither shimano or sram make one. 7 speed cassettes exist but they are very rare.
The hub is shimano & so are all the other components so I'm gathering its safe to assume its a cassette?
I have two 7speed bikes. One rim has an 8 speed cassette & both bikes don't like it very much. it makes the chain click and clang. Sometimes it drops multiple gears unannounced and its fallen off once.
would a narrower chain be easier than a new cassette??