Controlling the overhead

One huge task to complete before the cabin top can go on for good is the overhead console. This piece of art comes from Aerosport and allows the vents for the air conditioning and the lights to be mounted on the cabin top. I also have one of the first production examples of the overhead switch panel that Ed Krantz molded up.

The first step is a rough fit and trim to get an idea where the interference points are. The mold they use is pretty accurate but has a few spots that needs adjustments. I didn’t have to cut the joggle around the step in the cabin top, however, there were a few spots up near the windshield that were too bulbous and had to be ground down. Overall, the initial trim and sanding was a pretty quick and painless job.

The overhead has two large aluminum panels that can be used for lights, vents, etc. but need nutplates installed to secure them. Pretty quick job to set it all up including countersinking the panels for flush screws that came out very nicely. I also decided where to mount the four curtain vents that I got from South Florida Sport Aviation. They are using the Airflow Performance set up on their own interior and despite my best efforts, I couldn’t find any vents like these online. I like these because it allows good airflow along the windows as well as alternate airflow if one or more of the vents are closed, keeping good flow through the cabin and over the evaporator which is key to efficient performance of the air conditioner.

I also used the four molded spots to mount air vents in as you can see the cutouts above. Most have used either the eyeball vents or a universal car vent. Based on feedback from others and the astronomical price of eyeball vents, I decided Summit Racing vents would work better. They were $20 each instead of $120 each and I think will allow a lot more air to flow while being easier to use. I simply used epoxy/flox to secures them to the overhead taking care to not have any leak on the vents themselves. I also put two vents in the metal panel so that the pilot and copilot each have two vents, hopefully keeping me cool up front with all the glass. The panels will also hold an Aveo Eyebeam Touch task light for each seat.

Lastly, I installed the coat hanger in the rear which will probably rarely be used, but hey, it’s part of the kit and looks good. I can also use it to call this a business aircraft!

I will be running the wires for the switch panel and the task lights up through the center post so wanted to get the wiring that will be in the overhead completed. I went ahead and made up the wiring harness for the four task lights as well as the three overhead dome lights that will be used for general cabin lighting. The pictures show bare contacts, but after another order from Mouser came in, I installed the Molex connectors so that everything is line replaceable without cutting wires. I also cut the three holes in the overhead for the lights.

Finally, after one complete evening off of the cabin top to clear my head and make sure I’m not forgetting anything, it was time to epoxy it on for good. I mixed up a healthy amount of epoxy/flox and fortunately had a friend to split the task of spreading the mixture and setting it in place. With a couple of clamps and clecos, it fit well and made a secure bond to the cabin top.

Next up will be shaping and filling the assembly to get it all prepped for paint and final instal.