Sunday, January 12, 2025

Wiring Cleanup & Doublers

I received my latest order that had my Garmin GPS puck and a few other odds and ends in it.  Something I got to try out were floating nutplates.  They are similar to regular nutplates, but the center lug with the threaded hole is floating and can move around a little.  Since I didn't have the GPS in-hand when I made the doubler, I had to just drill the holes based on measurements.  History has proven that no matter how careful I am, holes laid out by hand and drilled manually are never 100% accurate.  The floating nutplates give enough wiggle room to make up for the holes being off by a decent amount.

Since the top skin is still off the plane, I just back riveted the doubler on.


Moving back to wiring - it felt like I just stood and stared at the plane for a couple of hours today.  Lots of pondering going on!  The pitot and AOA lines will come back to the rear of the plane via the conduit below the baggage floor.  Then they need to somehow get up to the top of the tailcone where the ADAHRS unit is.  I decided I'll run them up the center brace, but I don't like the idea of the tubing just being looped up and over the elevator bellcrank.  It would be a very bad day if one of those tubes ever got caught on the bellcrank.  I decided to make a guard to go over the bellcrank.  I'll put cable mounts on this to run the tubing up to vertical brace.


The wiring going from the center section bulkhead forward is starting to come together.  I'm still not quite sure how I'm going to handle routing all of the wiring around the fuel selector though.  The bundles are pretty thick and run into some of the fuel lines right where it's all butted up against the bulkhead.  That'll be another day of standing and pondering.