Originally posted by a2psyklnut
If your chainrings only have 500 k on em, and it's your middle ring, chances are they're supposed to be like that.
I agree. When I selected a new 40T middle ring at a bike shop (to get a different gear ratio, not because I had worn out my 38), I was taken aback by the two pairs of ground-down teeth. It took me (and the salesman) a moment to realize that this had been done deliberately at the factory, and the ring was indeed brand-new.
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"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069