I just installed my very old Bluemel fenders onto my commuter bike, or at least the rear one. We shall see. I'm not much of a rainy day rider, but I've been caught in a few on the way home from work. These were 27" fenders that I put onto my 26" MTB, they seem to fit, except for the chain stay bridge clip. It is way too small for the fat bridge on my Trek 7000. I'll drill a hole in the clip and attach it there with a bolt. The bridge has a hole for one already. Maybe I'll check to see if it is threaded.

For the front I need a longer brake bolt. I have cantis on it so it didn't have a bolt, and the one I bought is still too short. The only other problem I have is that the front mudflap has bent itself into an unusable shape from sitting in a closet for 20 years. I'll see if soaking it in hot water will straighten it.

And, the proper size for dropout eyelets is 5Mx.8 not 10-32, as I found out.