Sealed Right Tank’s Inboard Rib

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HAPPY 4TH OF JULY!!!!

Well, after stopping by Lowe’s today to pick up some latex gloves (I picked up latex instead of nitrile…I like the latext better), I got to work on sealing the inboard rib in.

For this rib, things were a little different. First, I can squeeze all of the skin to rib rivets (which is nice). Second, I have to pay attention to the reinforcement plates that need to go in place, and third, I have some fittings that can be installed once the rib is in place.

After buttering up the rib and riveting the 43 inboard AN426AD3-3.5 rivets, I ended up with this.

The clever readers will see the uppermost rivet on the right side is NOT SET. I caught it when I ran back outside later to count how many rivets I had set. (I knew counting rivets was a good idea.)

After getting the rib riveted in, I can now slide the reinforcement plates into place. (Like it says in the instructions, if you install these first, you won’t have room to squeeze the skin to rib rivets in the nose.) There’s a thick angle on the outside of the rib (shown below) and a thin .032 plate on the inside.

After lathering that guy with some pro-seal, I snapped this picture and got it installed.

That fan I bought a few weeks back is worth its weight in gold. It was 95°F today.

Fast forward a few minutes and some loud noises, and I had 6 AN470AD4-8 rivets set in the nose reinforcement area.

Perfect. (Well. Not perfect, but once I cover those smileys with proseal, you will never know.)

Fast forward another few minutes, and I got the flop tube installed with the -6 fitting on the inside and the nut on the outside, then I installed the vent tube (just flared) to the -4 fitting on the outside, you can see the aluminum washer and nut on the inside here. I made sure everything had a good bead of proseal around it before torquing everything down.

Nice.

All that’s left to do on the right tank is installed the anti-hangup brackets, rivet a An470AD6- rivet in the tooling hole of the outboard rib, and then close that bad boy up.

Oh, and fit the access plate with some stainless cap screws, instead of machine screws. More on that later.

2.0 hours. 43 rivets on the inboard rib. 6 rivets for the reinforcement plates. 1 drilled out (Easy as PIE!) Hope everyone had a good fourth. (It’s storming here. Boo.)

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