There are 2 excellent websites for chainrings. The first is by a guy who's
trying to tattoo his body with overlapping chainrings (!). He's done us a
wonderful service by providing great illustrations and naming them:
And then there's David Perry's (author of the great book BIKE CULT) website:
Hope you enjoy these as much as I do,
Santa Cruz, CA
"For Health & Pleasure
Ride A Bicycle"