Smitty's RV-9A from Van's Aircraft

RV-9A: Project Entry

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Time to fit the WD-643-SS Canopy Brace
I say "fit" because the canopy brace will receive it's final tightening in place when the forward top skin is riveted on. This was a little bit of head scratcher. After looking at the plans, I determined that the deciding factor in fitting this brace would be the forward most bolt and the gap left for the top skin to go under the brace. I cut and clamped a couple of scrap pieces of aluminum that together would establish the gap needed for the top skin to go under the brace. The gap is a little larger than the actual thickness of the top skin. I drew a line on the flat flange of the brace 3/8 of an inch from the forward edge of the brace flange. This line would show up in the predrilled hole in the aluminum angle previously installed on the panel rib. All I had to do then was "eye-ball" the cut-off mark on the other end of the brace by laying it down on top of the roll-bar.

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