Join Date: Jun 2010
Location: NW,Oregon Coast
CM Wasson has modified Brompton's saddle adapter pin,
which fits on top of a plain seatpost.
I have the standard SAP, the other fits a QR,
You could get clever with some cable run up inside the seat post,
and anchored elsewhere on the bike.
so the post wont come out but so far..
Brompton's seatposts are flared at the bottom of the post,
so will only come out by pushing it out the bottom of the bike.
folding seat post is a key feature of Bike Friday's Tikit.
Last edited by fietsbob; 04-13-11 at 07:36 PM.