however peugeot 753s for one are chromed, so maybe there is no real problem, who knows?
I'm led to believe that the Perthus does have a reputation for being a bit hit & miss as far as its lifespan goes, for this reason. Apparently the plating process leads to tiny hydrogen bubbles permeating the steel and making it brittle. Having said that, my old Rourke 753 had chrome aplenty and never gave me any hassle. Not that I'm a big fan of chrome on rear triangles - makes it difficult for QR skewers to "bite" if you use horizontal dropouts. My Cougar SLX parted company with its back wheel on a morning commute once for that very reason!
EDIT: Rourke with chromed chainstay (the front & rear dropouts and front mech boss were plated too) shown here in action on the A162 between Tadcaster & Sherburn about 10 years ago: http://www.flickr.com/photos/60525/3447 ... 6872562034
Wish I hadn't sold that Stronglight chainset though....
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