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Jims RV-8
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Date:  7-23-2015
Number of Hours:  3.30
Manual Reference:  8-38
Brief Description:  last of the seatback rivets and the weldment

So in thinking about how to finish the upper 4 rivets, I realized that I could reach across the fuselage from the other side and get a straight in reach to hold the bucking bar. For the bucking bar, I used the no hole yoke turned on it's side as it was long enough to get to the top. I was able to hold the yoke thru the lightening hole, but it was awkward... It wasn't full solid contact so it took 38 minutes and multiple "hits" to get to the 4 rivets driven to standard.

After the upper rivets were done I could attach the F-856-1 Spacers and the WD-823 Seat Back Weldment. It didn't seem like it would be a big deal, I mean it was only 8 horizontal bolts (per side) and a combination of 13 various vertical screws and rivets per side. But some of those were really hard to get to. I also clamped the spacer, seat back weldment and cockpit side rails together to get the fit right as I put in the bolts and screws in alternating to pull everything into alignment. Whenever things are hard to rivets - that should tell you they will be hard to attach nuts and get the torqueing done.... sheesh...I got most of them done but still have 4 rivets to set and one screw set to torque.
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got the final seat back support rivets driven

got the final seat back support rivets driven

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on to the seatback weldment

on to the seatback weldment

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almost done

almost done

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