1990 Moser Leader frames came with an expander bolt seat post...no seat collar. I can't find a seat post. Could one cut a slot in seat tube and use an after market collar to clamp a post?
thanks
Yes, you can cut a slot (with a hole drilled at the bottom of the slot to prevent fracturing like any conventional slot on a steel frame). Then use a collar.
This shop in Australia had a couple of the expander bolt seat posts for older Moser frames ("Timec") a couple of years ago although they wouldn't be on his site if he still has them ......