Tech New cassette, more noise

baribari

Maximum Pace
May 28, 2010
534
138
63
Fukushima
#1
I got a new cassette, with an 11t instead of a 12t little sprocket, and it seems to be noisier when spun fast (haven't ridden on it yet). Is this normal? I got a new chain several months ago but was running it with my old cog, which apparently is a bad idea.

Or does it just need to wear in a bit?
 

baribari

Maximum Pace
May 28, 2010
534
138
63
Fukushima
#5
The cassette came with a spacer, but I already had one on my wheel, and the sprocket seemed to fit perfectly... I wonder if that had to do with it. Probably not.