N184JP Build Log-Seatback WD-808 Installation
October 26, 2009 by Sandy
Filed under My RV-8 Project & Building Log, Sandy's RV Aircraft Files
Mike Ballard recommended I install the seat back for added support and rigidity before removing the forward skins [for the conversion]. Good idea. Thanks Mike!
So tonight that was accomplished. Pretty straight forward.
Make F-817 plate
Countersink and prime F-817
Attach F-817 (see notes on riveting)
Position WD-808 (seatback) in relation to rails & drill holes
Make spacer & prime
Attach WD-808 with AN hardware, torque 20-25 in. pounds
Done.
NOTES:
- Main thing as I saw it was to make sure WD-808 is level and distance from center-top of rear seat bulkhead and any given hole (L&R) was the same. Make sure fuse is level, left to right, or leveling the WD-808 bar is exercise in futility.
- Also, I was fortunate that the WD-808 fit perfectly without needing any pulling in or pushing out of the fuse structure as suggested might be needed in the manual.
- Riveting the uppermost rivets in the F-817 plate are tough. I ended up using some very large end wrenches (1-1/2″ & 1-1/4″) as bucking bars. Worked surprisingly well (some are on floor in photo).
- I had hard time finding distance from WD-808 to top edge of F-817. It’s 8/32″ mas o’ menos.
Here are a couple of “enroute” photos of the process. Click on the images to enlarge them.

WD-808 in place. I measured every possible distance and used level to make sure we were okdoky. (Click to enlarge)

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