Originally Posted by
x1124x
It's not a seat clamp. It's just a hole/tube where a rear rack attached to previously.
I don't think they came with a rack, but they did come with centerpull brakes that required a place to bolt on a hanger.
I solved the problem by modifying a cheap Laprade post. Drill and countersink for the very long bolt and cut the bottom of the post off at an angle. Either use the original steel wedge or fashion one from the cut off piece of post
