Time: 8 Hours
While I’m waiting for the center section painted parts to cure for a few days I moved ahead in the plans to the next section, the seat rib assembly. This is the section that will eventually support both the pilots and passengers seat structure. This step just continues the progress from the firewall to the tail build process. First up was to create 2 spacers out of stock that will evenly space the rear spar attach points for the rear spar of the wings.
2 brackets needed to be fabricated from some 3/4″x3/4″ angle. Luckily I remember reading during some research that these pieces need to be cut from the 12′ sections that came with my wing kit a year ago. They came with them since they are so long and could fit in the wing spar boxes. I triple checked the fuselage plans to make sure I had the right pars for the longerons, the angle pieces that will run uninterrupted from the firewall to the tail. They are not expensive but shipping would be due to their lengths. Once I was sure I cut 2 1/8″ pieces, one from each piece of 12′, to minimize the effects of a bad decision here. Then I fabricated them per the plans.
The 2 outboard aft seat structure ribs needed to have a little modification done to the forward part of its flange to make room for the flange of the next rib inward due to the angles the 2 ribs sit at.
I edge rolled the right bottom skin where it overlaps the left skin so that it will sit tight after riveting. I also edge rolled the outside edges of the aft ends of both sides where they will over lap the curved side skins later in the build.