Originally Posted by
79pmooney
The 25 year old (?) SR MKE-100, a post with a long "rail" the clamp slides on so you can adjust the setback. It comes with a quick release. The thinking was that the rider could push his seat back for crazy mountain bike descents. The idea never took off, but there are still some of those seat posts floating around. Well made posts, not toys. I replaced the quick release on mine with a bolt because I have no need for it and it cleans things up so a tool bag fits. THe post will probably be a much smaller diameter (I think mine and most that I have seen were 26.6) but they shim beautifully to 27.2 with 8 mil aluminum sheet. (Very common. Try any hardware store.)
Ben
I happened on one of the SR MKE-100 posts on a Miyata 610 recently and I agree it is well made and could be a good solution.
My B-17 was sagging and I had the same sliding problem that tilting kind of resolved but eventually resulted in too much pressure from the nose of the saddle. I laced mine up and now I can have it pretty close to level and am very comfortable on it.
For infinite tilt I bought this Brompton clamp and it has worked nicely to really dial in where I'm comfortable.
Brompton Brompton Pentaclip (Saddle Clamp) - Harris Cyclery bicycle shop - West Newton, Massachusetts