4 months I asked this question when I changed my chain: What can be done wrong changing the chain in a single speed? and the solution was to change the freewheel cog.
I decided to "invest" in the not cheapest model. I just found two possibilities the halo clickster for around 50€ and the white industries for around 120€, or the same I had some kind of no brand for 20€.
I decided to get the mid range halo clickster. Well after just 3 months and around 3000km I decided as maintenance that it was time to change the chain. So I put the new chain and I get the same kind of noise.
Is it normal that it is already worn out? Does it make sense to pay more for just a little amount of km?
And this is how it sounds, just when I give it some power. https://streamable.com/hfqlp The tension from the chain is not high, i can move it in both directions at least 2cm.