With the weather a little cool, the primer is still pretty fragile, but I decided to start reassembly of the wing anyway. I had to do a little bit of sanding to get rid of a couple of runs. I think that was the result of the cool weather and my lack of patience to let things dry before I did follow-up layers of primer. I had to study and re-study the rivet call-outs to figure out what rivets to actually put in since there are a lot of places that get riveted later in assembly. I covered all of those holes with tape to keep from accidentally putting rivets there prematurely
Most of the rivets in the doublers are universal head, with the exception of 4 rivets in the inboard edge.
I had been scratching my head over the outboard 3 rivets for a long time. I couldn't quite figure out from the drawings whether or not the doubler needed to be dimpled or if the aileron attach bracket installed later on would simply sandwich it and it could remain flat. It took a while, but I finally pieced it all together and figured out it should be dimpled to allow the attach bracket to lay flat. These are the types of things that I've heard Van's has improved on in the modern plans (now they do a step by step approach with detailed drawings at every step in the manual vs just full plans of the entire assembly). For the older plans like the 9A, they really still leave a lot of steps to be figured out. If I ever build another plane someday, I think the improved plans are going to feel like cheating.
I clecoed the ribs in place but didn't quite get to riveting today. Based on the direction the rib flanges face, I left a few of the inboard wing walk ribs out to make riveting a little easier.
