Drill all of the platenut rivet attach holes. Remove the T-407, deburr all holes, dimple the rivet holes in the rib, and machine countersink the rivet holes in the T-407 for the dimples. Rivet the T-407 and the platenuts in place. The gasket under the T-411 cover plate will seal these rivets, so they do not have to be set with tank-sealant.
It was time to fabricate the anti-hang bracket, this will keep the Flop tube from getting stuck in any one postion during aerobatic maneuvers.
Fabricated the fuel flow flap for the flop tube fuel pick up system. The flap is so fuel will not rush out of the fuel pick up area during aerobatic maneuvers.
Fit and drill the T-4068 fuel cap flange. Use the cap (installed in the cap flange) as a guide for centering the flange in the tank skin opening. Note that the cap flange has two slight bends in it to help it to conform to the curve of the tank skin.
