Originally Posted by well biked

Quill seatposts work like a quill stem in regard to what holds them in place. The bikes I've seen them on are late '80's/perhaps early '90's aluminum framed Schwinns, and some steel framed Peugeot's from the late eighties. I've never seen one that didn't have problems; either broken completely, cracked, etc. One of the dumbest ideas ever IMO. But there are defiinitely bikes out there that were designed for these posts.

Maybe Grand Bois will see this thread and post pics of the post he made from a regular post. I remember being impressed by it.