Originally Posted by
joejack951
It's not a crack. I have a brand new low-end Shimano crank with the same "crack" in the chainring. It's a stamped-in shifting aid.
That photo was not present when I first replied but my reply wouldn't have been any different if it was.
My wife's Shimano equipped bike is
exactly the same way. I know that looks like hell... but it shifts quite smoothly.
Greg