Originally Posted by
3alarmer
...it works fine in comparison to everything else contemporary with it, except, as already stated, probably a little harder to get it shifting crisply on the back, compared to the same years of Suntour. You can tweak that by using SIS cable housing, a ramped freewheel, and a swell KMC 8.93 chain. The brakes work better if you run new low friction smooth cables and cable housings that are lined. I have it on at least a couple of bikes, and it does OK. When first was released, it was either at or near the top of Shimano's component line. (I'd have to Google when the first year for Dura Ace was, and I'm too lazy.)
1977. But Crane just became Dura Ace then, right? I don't think 600 was ever the top group.
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