Designed and fabricated a bracket for the parking brake valve. This turned out pretty sweet if I do say so myself.

One think that will ruin your day really quickly is to land a taildragger with the brakes on, so to guard against that hazard, I'm locating the push cable in an out of the way corner to the left of the G5 where it's impossible to accidentally catch it on your clothing as your fidgeting around in the airplane. Since the G3x has discreet inputs for CAS messages, I also incorporated a micro switch that will trigger when the valve arm is in anything other than the full down and open position. Basically, with the arm fully down, it hits the switch and turns off the warning. Anything other than full down allows the switch to trigger a warning.

According to Matco, the valve is in the center of the "transition area" when it's perpendicular to the valve body. 27 +/- 5* up and it's locked, 27 +/-5* down and it's full open. I designed the mount to have hard stops that limit travel to 45* in each direction, so that should be plenty and allow for any cable slop or wear.

The large wing sticking up on the mount is there to allow for attaching the cable. Once I determine cable routing and eyeball where to put a mounting screw and adel clamp, I'll trim off the excess.

I spent pretty much all afternoon yesterday bending and cutting scrap to mock this up, and had to take a couple of cracks at it today to get it right. The only fly in the ointment is that I didn't have any screws small enough to fit the mounting holes in the micro switch, and in my trip to the aviation aisle at Ace Hardward, the only hardware they had that fit the hole and also had an allen head (so I can get the darn thing apart again if it ever fails once the mount is riveted to the firewall) was metric. In case it comes up at some point, the screws take a 2.5 mm allen wrench.

I had originally thought that I might just nest this inside a piece of angle, use the vertical leg of the angle for limit stops and micro switch attachment, and bolt it directly to the firewall as I've seen others do.

I elected to do it this way for a couple of reasons; 1- the hat section raises the valve up enough that there's no interference with the terminal spades for the microswitch. 2- immediately on the other side of the firewall in this location is the RV10 oil cooler plenum. I have no idea how hot the firewall is going to get in that area, but whatever it is, I didn't want that heat transferring into the brake valve, so the hat section allows for an air gap between the valve and the firewall.

At this point, I'm pretty happy with how it turned out.

I also got another shipment from Stein that had all my specialty switches in it, so I drilled a bunch more holes in my panel. They include; TOGA, revisionary mode, cabin and panel lights, defrost fan, co-pilot PTT.

I'm going to have Lemke interiors in Germany build my interior and I will be including seat heaters. They come with the switches already wired, so I reached out to Robert Lemke and he was kind enough to provide dimensions for the switches, so I also drilled the holes for them, even though I (hopefully) won't have them prior to first flight.

At this point, my panel is more air that aluminum, but I believe that I've got everything located and drilled with the exception of USB ports. The best (cheapest) solution recommended by my Avionics guy takes an 1 1/8" hole and at this point, I simply may not have room to put these on the panel. At least not in a location that makes sense.

They weren't in my original plan, but the wiring was a freebee when they made up my avionics harness, so I figured why not. I'm going to think about this some more, but I may incorporate them up under the panel somewhere or just skip them entirely.