Below is a view of the "shop" side of the 10 rivets. It is important that both ribs are fluted to take the bow out of the parts so they can lay flat against one another.
The two Spar Reinforcement Plates are next to get riveted to the Spar.
The standard practice is to have the "shop" end of the rivet on the thickest side and the head on the side of the thinnest material being riveted together. I did this without thinking about it, wished that I remembered that when it came to riveting the Elevator Horn to the Spar in a future step.
I have learned that the part you are riveting needs to be secured tight to your work surface to keep it from jumping around when your setting the rivet. A sturdy work table is the key.
All rivets are set and and have been checked with a rivet gauge for proper depth. There was only one that did not look right so I drilled it out and set a new one.
The Elevator Horn is the last part to be riveted to the Spar and End Rib. After completing this task, I got thinking if I should have set the rivets 180, with the shop end on the side the Elevator Horn fastens. Too late now, not going to be drilling those 12 rivets out and take the chance messing up the holes.
The shop side of the AN470AD4-4 rivets are set and have been checked using the rivet gauge.
Before applying the blue RTV sealant and closing up the skin, I Clecoed everything together to check the fit of everything. I am pleased with this substructure. Build On!
Total time this session, 2 hours.
Build Meter: 210.5 hours.