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Sid & Houston Mayeux Project
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Date: 10-23-2014
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Number of Hours: 2.50
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Manual Reference: Leg Fairings
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Brief Description: Aligning the leg fairings, Part 1
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Time to align the leg fairings. Poorly-aligned fairings can really screw up the airplane's flying qualities, so it's vitally important that the fairings' trailing edges be aligned with the relative wind.
First I lefted the plane's onto a sawhorse under the aft wing carry-through to get the load off the gear legs. I plumbed the airplane's exact center point from the nose and the tail, and marked these points on the hangar floor with an X on blue tape. I then snapped a snap-line on the pavement between those two points, marking the airplane centerline.
With the fairings mounted to the gear legs and properly situated fore/aft to the gear leg, I marked a leading edge reference point high and low on the fairing. Image 1 shows me plumbing the upper reference line, and marking the spot on the floor with blue tape. With both of those reference points marked, I then stood a 2'x3' sheet of plywood vertically against a sturdy saw-horse under the horizontal stabilizer (I screwed on with wood screws).
I measured the distance from my two front references' plumb points to the centerline, then measured and marked that same distance out from the centerline under the tail.
Images 2 and 3 shows me using my laser level to draw a straight line from the front reference to the back reference mark. Then, measuring the height between the front more mark and stab reference mark, I measured up the laser line on the plywood sheet from the floor to the same height. This is where I drilled a small hole and screwed in a small eye screw.
...CONTINUED...
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Plumbing the gear fairing reference points
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Measuring/marking my string points...
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