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Date:  5-14-2020
Number of Hours:  1.50
Manual Reference:  21-05
Brief Description:  Sight guages and vent lines

Trimmed sight gauge fairing blocks a bit more.

Finished off transitions and cut flox corners in all end-revealed cores for sight gauge sites.

My gouging had damaged the tapes inside the tank. If I had planned this right there would have been a fairing block inside this corner to make this unneccesary, but I just prepped the glass to replace the tapes.

Started running a vent line from the top of the sump tank, through the fuselage side and up through the lower strake skin in a position that will be captured by the eventual sump tank, and up inside the tank to near the top of the fuel tank on the fuselage side, at the plans sight gauge position. The plan is that with the nose on the ground the top of the vent is above the drain point that drains into the fuel blister, and from there to the sump tank. Fuel drains into the sump tank, air is vented into the starboard fuel tank. Once the tip is covered it won't work, but it won't be required. I considered just plumbing this into the fuel drain manifold I will place at the top of the firewall, but I just didn't want a ventline that will remain full of fuel going aft of the firewall. Lost interest and went inside when I noticed it was 8C in the shed.

[Timewarp: Note later that this vent is a possible path of unfiltered fuel and debris into the sump tank if it runs in reverse. I can't really visualise if this will happen, so stick a 3" diameter stainless steel strainer over it.]
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