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RV-9A: Project Entry

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Taking the sag out of the main spar

The spars have a cutout in them on one side to allow room for a long "J" stringer that runs horizontal under the top skin, providing additional strength for the skin. Unfortunately this cutout allow the ribs to bend when you put the center support under the rear spar. So I took some scrap angle aluminum and drilled holes into it and clecoed it to one of the spars over the "J" stringer gap.

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