VOR antenna

Time: 1.25 hrs

Drilled out and filed the holes in the VS skins for the VOR antenna elements. I used a hole punch to punch a hole through some masking tape and used that on the VS rib so that I had a rough idea of where the hole needed to go. I then clecoed to skin to the frame and marked the holes and then did the same for the other side. After a bit of filing I finally got the antenna elements to fit.

 

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Hole punch and masking tape

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That should get me close to the correct size hole to drill out

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Skin clecoed and marked

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Allen key hole lines up and antenna element fits

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Still needs a little clean up.

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VOR mounting plate and trim tab

Time: 2.0hrs

Fabricated the VOR mounting plate. I had purchase some T6 6061 0.81mm aluminum from Onlinemetals.com to use for the VOR mounting plate. The fabrication was pretty straight forward. I traced Rib 4 onto the aluminum sheet and then cut it with a Jigsaw. Then a lot of filing to get it to fit. I should have waited until I had made the plate to drill the main screw holes in the rib so that they would have lined up perfectly, instead they are a little off, but not too bad. I think it came out pretty good. I’m not much of a metal worker.

I will put some kind of strain relief for the RG400 cable that attaches to the antenna, but I’m not sure what I will do. Maybe I’ll make a simple bracket out of aluminum and put a grommet in it and rivet it to the rib/plate.

Next step is to rivet the plate to the rib and mount the VOR antenna to this assemble. Then I need to do the cut outs in the skin for the antenna elements.

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Here’s the mounting plate fit inside the rib. Need to rivet it next.

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Also worked on the Elevator trim tab. Riveted the piano hinge and control horn then filed and cleaned up some of the edges.

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Vertical Stabilizer Rivnuts and VOR mounting

Time: 1.75

Installed the rivnuts on the vertical stabilizer parts. I used some high strength “red” lock tight on them (as suggested by Craig). Pretty easy to install these.

Also started to work on mounting the VOR antenna on RIB #4. I wasn’t supplied the mounting plate so I ordered some .81mm 6061 aluminum to make the plate. Will have to wait to work on that when the material arrives. It looks like the rivets are going to be a bit tough to get in near the antenna base. They will definitely need to be cut, but how much can they be cut? The VOR antenna is a RAMI AV-520 V STYLE VOR/LOC/GS ANTENNA I ordered from Aircraft Spruce (https://www.aircraftspruce.com/catalog/avpages/ramiav520.php).