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Jeff & Jackie's RV-8 Project
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Date: 7-31-2007
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Number of Hours: 2.25
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Manual Reference: 8-28
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Brief Description: Seatback frame (REWORK)
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Wow, its been nearly three weeks since I last worked on the plane! The replacement WD-808-PC seatback support frame and F-817-A cockpit rails arrived today in separate packages (as ordered that way). It was time to get back into it. Two and a quarter hours later I've only got the left side fitted and drilled, and I'm not overly happy about that either. My first problem was that the new WD-808 frame was *way* out in alignment compared with the existing side plates. I had to clamp the fram to the bench and try to bend the forward 'arms' into submission. In doing so the paint around the weld gave and I was concerned I may have broken the weld. I don't think so: I gave it a good scrub with a wire brush to remove the paint and visually it looks ok. Obviously I can't do a dye penetrant, ultrasound magnetic flux, or any other kind of NDT on it, but I think it will be fine. Alignment is not perfect, but it'll work. I'm sure glad it is ok; it was $80 to buy the fram and over $160 to ship the damn thing! OUCH :-(
I chose a different method of drilling the left side this time. With the frame cleco'd in place on both sides, I first removed the left side cockpit rail. Then I match drilled the frame to the side plates and bolted it in place ; this saved me having clecos sticking out and getting in the way. Next I re-installed the cockpit rail and spacer, and then clamped the seatback frame to the cockpit side skin/longeron. Using a light and mirror, I got the holes underneath lined up as best I could and then went ahead and back drilled for the AN509-8R8 screws (drilled #30 initially). The aft holes are longitudinally a little out, but edge distance with the cockpit rail inboard edge is at least ok. Finally, I went back and drilled #30 all the top holes, and opened the AN509 screw holes out to #19. And the job, as they say, is a good 'un. Tomorrow, the right-hand side... and if you're lucky, a picture.
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