I ride a 60cm frame and I've bought 2 rear racks already. What's frustrating is neither fits on the bike. I do not have the eyelets on the seat stays, but I do have eyelets above the dropouts. When I try the racks on a smaller bike, they work! The fit problem seems to be the angle of the seat stays. For a smaller bike the angle between the seat tube and the seat stays is more obtuse than on my bike. Because of the steep angle, I can't get the rack adjusted over the wheel without running the front end into the brakes.
Any ideas what this doesn't work? If this still doesn't work, can anyone recommend me a rack that mounts on the axle of the rear wheel? I can't believe that a mass-produced rack doesn't exist to fit my bike.
I'll have to make my own rack if nothing else works.