After a 7 month hiatus developing the gas turbine engine controller for the turboprop that will one day power this aircraft, I have picked up where I left off. Since having removed the cross members that allow for the installation of rear doors I have finally taken the time to make these 4 brackets that will strengthen up the upper corners of the rear cabin door area. The bottom area of the rear cabin doors was strengthed and documented in a previous post, so no additional work required for that area. For what should have been a 3 hour job it ended up taking 15 hours to get everything lined up, drilled, deburred, primed and riveted for the rear wing root area. You can see the small brackets I made that are held in with 2 rivets. I had some alignment issues, so I ended up replacing the AN470AD4-7 rivets with larger AN470AD6-7 instead. It is difficult to get the riveting gun into this area. I also had to mill some 3/8 stock and cut out a new spacer for the center of the rear wing root assembly. The one supplied is 1/4" thick and due to the F6045-L and F6045-R being 1/16 thick and the wing root being 1/4" thick, the spacer really ought to be 5/16 thick, therefore I used my CNC to make a new one, 0.98 x 1.25 x 0.3125" are the dimensions. While this 15 hours felt like an uphill battle the whole way I can now move on to the next section.
The old 1/4" spacer (left) and the new 5/16 spacer (right)
