Originally Posted by
Cyclaholic
I see where you're going with this. I like it.
How about using a threadless headset?
once you have it all set up all you have to do is put a little weight on the saddle before tightening the seat post clamping bolt on the frame.
Do you have a solution for affixing the crown race to the seatpost? This could work, but would require some custom machining, putting it beyond a reasonable cost.