Wednesday, December 11, 2019

Section 26 Finish the rib repair and baggage ribs

RV14 Build December 8

MID Fuselage Lower Structure

Finally got around to repairing the baggage rib. So quick recap. I tried to rivet the rib myself when I was tired and didn't get even pressure on the bucking bar and ended up bushing the metal out around the rivet shop head. After drilling it out 1 rivet hole was too big and required to be stepped up and another was close, but that one was close to the edge and I was worried about rivet edge distance. I decided to make a doubler and flush rivet that to the rib to reinforce mostly the top rivet near the edge but it went the whole length.
Here you can see the doubler riveted on. The smaller rivet shop head are AN3 that secure the doubler to the rib flush on the FWD side, then the larger and the pop secure the rib to the spar. I decided to use a #5 cherry max instead of a driven rivet. Mostly because of cost. I dont have a rivet set for larger AN5 and the cherry max are .66 each. If you see my previous post on section 26 I went through the stress load thought process.

 Conor stopped by and helped rivet the ribs to the bottom skin.

Riveting on the last of the outboard baggage ribs to the skin.

Finished!

MID Fuselage Lower Structure 4.0 Man Hours

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