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Old 06-13-08, 10:12 AM   #1
robertmccormack
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Edco Competition Triple inner chainring BCD

I have an Edco Competition Triple chainring set from the late 80s on my bike, and now the inner chainring is wearing out. The two larger chainrings have a BCD of 130mm, but a friend told me that the innermost, smallest chainring is not the normal 74mm BCD. Does anyone know the BCD of this thing? It's hard to measure without dismounting, which is tough to do.
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