Well, the bad news is... my 3D printed mount failed. I'm really not THAT surprised, since the little mounting bosses have shear and tension stresses on them in the exact wrong direction for the 3D printed layers. In other words... the weakest part is the part that's stressed the most, in its weakest direction. Oh, well... it was a fun exercise designing and printing it, at least. If it were injection molded in ABS, it would probably last forever. And, my CNC router doesn't have enough axes to do the job.
Not a big problem. I'll fabricate a simple aluminum plate, with a hole for the cables, to cover the hole from the 496. I'd much rather just replace the center portion of the panel, but that would mean pulling the throttle, choke and heat cables... no thanks. Anyway, we'll either mount the iFly GPS with some industrial Velcro, or use a commercially available injection molded part attached to that.
Both of us are quite happy flying with the iFly. Easy to use, we've got ADS-B traffic and weather in addition to all the airport data, etc. And, it talks to the autopilot and HSI just fine. We've just added a third partner, he was pretty impressed by it as well (admittedly easy to do, since he's been flying trainers until now).
RV-12 # 222 N980KM "Screamin' Canary" (bought flying)
Fisher Celebrity (under construction)
Previous RV-7 project (sold)