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Kupe's Zodiac 650B
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Date: 2-3-2013
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Number of Hours: 1.50
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Manual Reference: 6-T-2A, B
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Brief Description: Tip Ribs and Hinge
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Went back downstairs for a bit before the Superbowl started to take care of a couple more tasks on the stabilizer: Tip ribs and elevator hinge.
The tip ribs were a bear until I realized that Zenith's pre-drilled tip ribs, although described as "symmetric" in the Photo Assembly Guide, actually are not. Based on alignment with the pre-drilled skin, alignment with the "L" brackets which help hold the tip rib and a cutout notch in the outboard, rear, lower corner of the flange (this is the hint that finally convinced me), I came to realize that sides do matter! Once I figured that out and I stopped trying to fit the ribs in the wrong sides, it all went together fine.
Next was the elevator hinge. With the skin pre-drilled with pilot holes and already perfectly flush with the rear spar aft flange (no trimming required), it was a simple matter of measuring the middle of the hinge, matching it with the aircraft centerline, clamping, drilling, and cleco fastening. A quick and efficient job.
Tomorrow morning: Disassemble, debur, rivet.
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Tip rib cleco fastened in place. This would be the RIGHT rib.
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The elevator hinge drilled and clecoed.
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