Joined: Nov 2005
Posts: 5,768
Likes: 10
Bikes: Cinelli, Paramount, Raleigh, Carlton, Zeus, Gemniani, Frejus, Legnano, Pinarello, Falcon
Should be pretty silent with a well oiled chain.
In my experience, the jockey wheels in the cage get out of line with the freewheel. Gently tweak the cage with the grip of an adjustable wrench so the chain runs in a straight line from freewheel cog through the jockey wheels.