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Date:  11-27-2018
Number of Hours:  3.00
Manual Reference:  Sec 6
Brief Description:  Rudder Trailing Edge

Working on the trailing edge. The trailing edge presents a few problems. The object is to get a very straight edge with no more that 1/10 of an inch variation. I initially sandwiched the trailing edge (used 3M VHB tape instead of Pro-Seal on each side of the AEX wedge) between a flat steel bar and a 1/4" steel angle. Using every clamp in the house, this arrangement worked very nicely. After allowing the clamps to compress the edge and the tape for a while, I began to backrivet the edge. This process is called Double-Flush Riveting. Using regular AN426 type rivets, one side of the trailing edge would have the manufactured head of the rivet sitting nicely in the skin dimple while the shop head side of the rivet sits in the skin dimple flush with the skin surface but does not fill the dimple. I decided to alternate the direction of the rivets for improved appearance and hopefully better results. Image 3 is hard to see... but the edge came out very straight.
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