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Buck's RV-8
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Date: 11-11-2010
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Number of Hours: 6.00
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Manual Reference:
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Brief Description: Magnetometers; DVR power supply
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Today I fabricated a small shelf for the Digital Video Recorder (DVR) power supply. It fits under the right side of the aft baggage compartment's "hat shelf," just forward of the elevator bellcrank. I made it out of 0.40" scrap, with two stiffeners underneath, and two nutplates. It wasn't initially obvious, but the two longerons I decided to mount it to are not in the same dimensional plane. Therefore, I had to bend one mounting tab up, and the other one down. (You might be able to see this in the second photo below.) The shelf is now primed and ready for the nutplates. I'll have to clean up the wiring that passes underneath it before I install it for good.
The big job of the evening was the final installation of the two GRT magnetometers in the aft fuselage. I inserted myself and spent a couple of quality hours in the aft fuselage (with numerous swear words being uttered, I assure you). I only had to get in and out of there about 40 times in order to get tools, tie wraps, different hardware, etc. I was able to successfully make the magnetometer wiring harnesses cross the other nearby wire bundle at a 90-degree angle, as you can see in the third photo. The shelf I made over a year ago is very strong and probably way overbuilt. The only snag was that the BSPQ-44 pop rivets I used to install the shelf could not be pulled from the top because of the tight arc in the top fuselage skin, so I had to insert the rivets from the bottom. I also found out that it's hard to tighten the D-sub connector screws on the back side of a magnetometer using a mirror, worklight, and a small screwdriver when you're a big guy and you're inserted into a space smaller than a coffin.
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This small shelf will hold the DVR power supply at left.
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It will live here, just forward and right of the elevator bellcrank.
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Both GRT magnetometers are now installed and their wiring harnesses are in.
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