Dan & I worked on the wing root ribs. These start are standard ribs but trimmed shorter so you can rivet them to some aluminum angle mounted on the spars. We read on a few websites that on the front rib one can cut out the material between the lightening holes. This makes reaching into the wong easier for rigging. One can see a picture of this in the Sonex website under Support – Instruction Sheets – Wing Installation/Removal Instructions . You can see the oval in the forward root rib. We made the root rib gussets, they are different than the rib gussets.
