My Vision is an R40, built in 2001. A few years after and before they went out of business Vision, or rather Advanced Transportation, the company that built Vision's changed the design of the bike, thus changing the design of the seat frame. I can buy a replacement seat frame for the newer Vision style, but not for mine.
I already contacted The Bicycle Man and asked if he had any of the older style Vision seat frames from when he bought some of the Vision product line at an auction because they were going out of business. He does not, only for the new style seat frame.
Here is a link to what the newer seat frame looks like. This is actually for a Volae, but virtually the same seat frame design as the newer Vision models;
http://www.hostelshoppe.com/cgi-bin/...ory=1136937409
http://www.hostelshoppe.com/images/p...mesh_frame.jpg
Here is what my bike looks like;
http://johnsbicyclinghobby.blogspot....ision-r40.html Note the pics with the seat, including the close up views.
Here is an update as to what progress and decisions I have made about the seat frame. I am going with 4130 chromoly and am going to have Novelty Machine and Supply build it for me, if they can.
http://johnsbicyclinghobby.blogspot....ame-broke.html