The Zeus alloy freewheel was a thing of beauty, but only good for a single day's racing, in my view. I probably got a couple hundred miles out of mine, tops, before it started shedding alloy dust all over my chain, and soon after started skipping.
If you stayed on the smallest cog, which was a high-grade steel, as I recall, and used the other alloy cogs sparingly, you might get 1000 miles or something out of it. Great for criteriums maybe, if you were a strong rider, but otherwise? For pros only.
Charles Andrews
SoCal