Avionics mounting parts and wing fit prep: 6 hours

• Installed backer plate and fuse block for G3X back up power.
• Riveted plate nuts on all avionics mounting parts that had been primed. Also riveted sub panel engine control bracket.
• Connected and torqued fuselage fuel lines getting ready for wing fit. The left fuel line to bulkhead fitting felt a little tight so I took it off and ground down a bracket to give it more clearance.
• Positioned fuselage in garage to fit wings. I had to do a little rearranging but with the fuselage diagonal in the garage the wings will fit on no problem.

Fuselage position for wing fit:

Fuel lines connected and wires temporarily tied down:

Andair fuel valve looks nice

Sub-panel engine control bracket modified to accommodate GTN-650 tray:

G3X back up power fuse block:

Back up electrical and some priming: 3 hours

• Drilled the outboard forward fuselage ribs for pull rivet wire clips. I will have provisions for quite a few clips to accommodate the various wire bundles.
• Located the back up fuse block for the G3X system on the left canopy deck forward of the instrument panel. Also installed plate nuts and made a back panel for the fuse block out of .063 aluminum.
• Prepped cleaned and primed all the avionics brackets, doublers and other parts.

Ready to install / rivet:

Prepping:

ADAHRS mounting and electrical: 3 hours

• Cut out doubler for mounting dual GSU-25 ADAHRS (air data, attitude and heading reference system) to sub-panel.
• Drilled and deburred doubler and subpanel for ADAHRS, rivets and platenuts.
• Drilled left sub panel for pitot, aoa, and static air lines to supply ADAHRS. Also drilled a few large wiring pass through holes on both sub panels.
• Drilled back up electrical bus bar to forward cockpit deck.

Backup electrical bus location:

GSU-25 in position on doubler and subpanel:

Working on doubler:

More avionics mounting: 4 hours

• Worked on locating and drilling mounting holes for the GMA-245R remote audio panel, arinc interface for the GTN-650 and the engine sensor interface.
• Also drilled holes for mounting plate nuts to hold everything on.
• The audio panel took some careful positioning to maximize exposure of the bluetooth antenna without interfering with the engine control cables.
• I also worked out the location for mounting my dual back up electrical bus. This will allow me to have all electronic ignition components wired directly to their respective batteries. I also have the fuel pump on one and backup power for the G3X system on the other.

Backup bus location:

Remote audio panel and arinc interface:

Engine sensor interface:

Avionics mounting: 7 hours

• Added plate nuts to firewall angle for VPX brackets
• Came up with a way for the sub-panel f-746 bracket (engine control cables are attached to it) to clear the GTN-650 tray. Measuring and laying everything out took a while.
• Modified f-746 bracket and made two new supports to be riveted to the sub-panel
• Drilled new bracket assembly to sub-panel
• Drilled new bracket for plate nuts to hold clamps for engine control cables
• Removed sub-panel and ribs
• Drilled and GDL-39R to right sub-panel section. Also drilled for plate nuts to hold it in place

Drilling GDL-39R to right sub-panel section:

Modified f-746 bracket in place:

F-746 bracket assembly finished:

New parts and cut down bracket:

Firewall angle plate nuts for VPX brackets:

More avionics mounting: 6 hours

• All hanging avionics are accounted for. I'm using platenuts for all key attachments so all this hardware should be able to be easily removed from underneath once the top skin is in place.
• Finished brackets for mounting the transponder tray and the VPX
• Attached brackets to transponder tray and VPX (carefully taped up VPX to keep out any metal shavings)
• Drilled brackets to firewall angle and sub panel flange
• Installed plate on firewall angle for transponder tray brackets

Locating VPX pro attach points:

Transponder tray mounting:

Avionics mounting: 4 hours

• Finished the brackets to mount the EFII engine computers. Also drilled brackets to sub panel ribs.
• Started on the brackets for the VPX electronic circuit breaker and the mode S remote transponder.

Getting ready to drill the engine computer brackets to the ribs:

Panel and GTN-650 tray in place to measure for other brackets:

VPX and transponder brackets: