This week I put the left flap together. Because all the parts had already been prepped (the way Van has you do it you work through both left and right completely before riveting anything) the left flap went pretty quickly.
Riveted the nose rib assemblies together.
Riveted the two smaller nose rib assemblies to the spar.
Then riveted the inboard nose rib assembly, FL906A,B,and C (bracket,spacer and plate) to the spar and the inboard FL905 rib.
Once all those are riveted the remaining FL905 ribs are riveted to the flap spar.
Inside view of a rib riveted to the flap spar. This is the left flap.
Clecoed the top skin to the ribs, then clecoed the FL901A and FL901B nose skins to the ribs and spar.
Drilled the inboard nose ribs to 7/64" and riveted with MK319BS pulled rivets (the inboard nose ribs are enclosed by the skin so there is no way to get inside to buck them).
Once the nose ribs were done you put the flap assembly in the cradle (spar, nose skins, top skins and ribs, but minus the bottom skin and trailing edge). The top skin and nose skin are then flush riveted to the spar.
This is what it looks like once the top side of the nose skins and top skin is riveted to the flap spar.
Note the wave in the trailing edge in the picture below. This is the reason it's piled with so much weight when riveting. The weight straightens everything out so you don't get curled trailing edges.
Once that is finished, the assembly is laid on the table and the bottom skin is clecoed into place under the nose skin, then the entire assembly is weighted down. Then the bottom side of the nose skin as well as the bottom skin is riveted to the spar with flush rivets.
