Chapter 7 Pt. 2 - Mounted Seat
A few pics of the mounts. Here you can see the rear mount. Started with a little JB weld to get the aluminum piece in place, then 'glassed over it with a few layers. Should be strong enough, and if it gives way, it won't be far to fall, at least. The bottom of the seat actually just about rests on the frame's top tube, so there isn't much force going through the mount to begin with. It's more for stabilization than anything:
Front mount is a simple through-bolt that goes into that piece made from angle:
Made a first draft of the cushion, too, using some high-density foam rubber stuff I found at work. Eventually it will get leather or vinyl covering, but works pretty well for now:
(edited)