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RV-7 Construction Log
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Date:  3-13-2012
Number of Hours:  1.50
Manual Reference:  p 6-12
Brief Description:  Part 1 - Left Elevator and Trim Tab Hinge

I used a piece of angle taped to the trailiing edge of the elevator to locate the trim tab fore/aft. (Photo 1) I used a couple of #40 drill bits to set the minimum gap at the outboard end of the tab. Before fitting the tab, I marked a rivet centerline 3/16" from the forward edge of the hinge. When I fit the tab, this centerline came out right in the middle of the holes (Photo 2). The gap came out 3/32" at the bottom and 1/4" at the top. (Photo 3) I may build another tab, but not right now.

After drilling the forward half of the hinge, I removed it, then deburred, prepped, and primed it. It'll be ready for riveting after the primer cures.
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"Jig" to align trim tab with elevator.

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Rivet holes in forward hinge half will end up on the centerline.

Rivet holes in forward hinge half will end up on the centerline.

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Forward hinge half match drilled to skin and trim spar. Gap is 3/32

Forward hinge half match drilled to skin and trim spar. Gap is 3/32" at the bottom and 1/4" at the top

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