Brief Description: Cabin fuel line fabrication - 03
The raidus was tight enough that when I unscrewed the fuel line from the fuel valve the line jumped to the right. You can see in image one the nut to the right of the fuel valve. It moved that far when I disconnected it. That is a lot of pressure against the sidewall of the line. All of this meant re-fabricating the fuel lines.
First I needed to resolve the issue of the turn radius at the fuel valve. I emailed Tom at TS Flightlines and we discussed what he could do. Tom is great. His answer is "If you can design it I can fabricate it." He showed me some lines he had made, they were much more complex than what I needed. The turns I needed would be steel lines connected to the flexible teflon lines.
I started fabricating mockups of the steel line using 3003 3/8th aluminum tubing (see image two.) The two 90 degree turns places the line perfectly in-line with the support bracket openings. Using a rubber hose to represent the teflon line, I ran the mockup to the next location. In the lower right corner of image 3 is where the line makes a 90 degree turn towards the firewall and then another 90 degree turn to exit the fuselage.