I've spent many months drawing out various designs, doing cardboard mockups, writing Python scripts to calculate the shape of the panels, scrapping various designs, repeating the whole process, switching from inches to metric, and going through it all again. This is the resulting quarter-scale (I think? It's been a while since I worked that out.) model of the velo. There's a hole at the nose where I mis-measured; hopefully I won't make that mistake in the full-size version.
A view of the interior. From photos of Friend Wood's velo I'm guessing I won't need so many cross-sections, but I think he also covered the whole thing with fiberglass, while I'm hoping to get away with just glassing the seams.
These are the cross-sections cut from 1/4" plywood. I'll need to hollow them out more eventually, but for now I'm going to leave them as is until I can get the whole thing roughly tied together and see how it holds up.
I'm currently working on the boring-looking part: Plotting all the side panels on plywood. I'm one away from having half-a-velomobile plotted, at which point I'll cut them out and see if they work. If they do, I'll get enough plywood to make the other half. I'd post more photos of this part, but the only thing to look at is plywood with faint pencil-marks.