Originally Posted by
mkeller234
It sounds to me like your seat post might be not be the right size for your frame. That gap in the back seat lug should not close up all of the way, it should be open evenly from top to bottom.
I can't imagine that the seat post is the wrong size. It's the same one that came with the bike over 30 years ago. The gap is small but it is there. However, the clamp itself is pretty well closed.
Originally Posted by
jeremyb
I've had this problem before and it was an easy fix for me.
The seat binder bolt was as dry as the desert so although it felt tight it wasnt. After lubing it, I could get a few more turns which solved the problem.
Good luck!
I thought I remembered lubing the bolt before but I may be mistaken. I'll have to pull it out and double check.
Originally Posted by
Andrew F
I had a simular problem on a 40 year old frame. I ended up cutting a shim out of a thin alum. beer can. Can't see it and it works perfectly.
I may have to try this! How big of a piece did you cut? Did you lube the aluminum? I can imagine that pressing aluminum so tightly between two pieces of steel would eventually cause it to weld itself into place if you didn't.