Wow,

This is going to turn into a build thread. I'll try and inlcude some pics from my Bristol Scout which uses the same design principles.

The foam ribs are about 3/16" thick stuck onto a flat piece of 4mm coro wih double sided tape. sign vinyl is stretched over them for covering.

The bottom piece of coro is a seperate piece.

My D7 has everythinbg at zero incidence, but requires some downtrim, so if you are building one, you may want to build the horizontal stab to scale, which was at the same angle as the turtledeck (roughly 2 degrees)

First start wih 4mm coro box. This will be from the pilot fwd. The 2mm is sandwiched over this with no formers. I've included some teaser pictures to get you going.

The cabane connecting points, are pieces of 4-40 threaded rod, bent at a 90 and polyurethane glued into the flutes of the 4mm box. The 2mm coro is then contact cemented over the 4mm box, and stiched at all seams leading aft.