Originally Posted by
sensitivejonah
I've used the Adel clamps on a previous bike with good success. The fitting you link above would work as well. The other option is get a flat piece of stainless, drill a hole for the axle on one end and thread in an eyelet on the other end for the rack.
If that bike is unpainted stainless it would be pretty inexpensive to get someone to weld on an tab for a rack mount.