Originally Posted by
osephjey
I believe the other two chainrings are bent into an oval shape, which isn't easy to tell when I've got it flipped over, but when riding I can really tell.
Do they say Biopace on them?
Look up Biopace, I bet they were made like that if they're "an oval shape."
Yes, if the big ring fits on inside of the spider without hitting the frame you can definitely run it like that as a 1x6 or 1x7 or however many gears you have in the back.
If your outside BCD is 110, I'm 99.9% sure the BCD for the little ring is 74. This is a common size and you should have no trouble finding replacement rings if you decide to go that route.