Originally Posted by
fietsbob
more frequently you clean oil and replace the chain, the longer the cogs and chainrings can last, in a wear life..
chainrings like cogs can be of steel or a few different alloys of aluminum, of varying wear resistant hardnesses....
Well, it appears that I have not taken care of my chain as I should have. Lesson learned there. I just wonder whether the bike shop's recommendation is not premature when it comes to actually replacing the cogs and chain ring after just 2,500-3,000 miles.