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Building Integrity
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Date:  3-20-2018
Number of Hours:  11.00
Manual Reference:  Section 2
Brief Description:  The beast is ON!

Today was massive. 11hrs non stop. My goal was to hang the engine today and it's done! The day started with some final checks and changes to the engine mount installation. I wanted to make certain the thrust lines were on point so I ran a plumb line from nose to tail and then from the mount tabs to the floor and sure enough adjustment was needed. A few washers later I was at 90deg. from centerline. Interesting, as I may very well have had side thrust affecting my yaw. We will know soon enough! These plans built airplanes aren't made with much precision even on a lucky day.
The second task was to install a vent line inside the airbox that would send real time Baro pressure straight to the ECU. The line was run with an up angle and high point to help avoid water ingestion.
The next fun mod was to plumb a fluid drain line from the lowest part of the air box to the oil cooler intake plenum. Yep, you heard right. So here's how it works. In flight, rain intake won't hurt anything, but on the ground parked it could very much so flood the engine. Not good. So the drain line will drain water out the intake scoop when parked. When flying, the intake scoop is pressurized so the drain line won't be leaking valuable manifold pressure. The drain also serves as a fuel drain when the tank vents burp up fuel. The air filter box intake was designed to keep the fuel from draining anywhere but back to the air filter box. So there you have it. And now I have an air filter for the engine :) I still need to install a drain nipple on the box but this was definitely a Win win win win win. Oh and the Yellow line is made for fuel. It's Tygon. continued...
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Plumb lines for thrust line

Plumb lines for thrust line

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ECU Baro pressure line installed

ECU Baro pressure line installed

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Baro line with high point

Baro line with high point

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