Main gear doors, fuel shut off | 11.13.2020

Worked on the main gear doors some. Drilled the new holes in the top of the right gear door to fit. Attempted to install both doors and realized that the brake line, which hadn't been installed when doing rough fitting interfered with the foam stiffener near the bottom of the doors. Relieved the foam in this area and then microbubbled over the foam in prep for a layer of BID.

Both legs were relieved like this where leg hit the brake line.

 

While that was curing, I plumbed the fuel system out the back of the firewall. This comes out of the sump tank, through a shut-off valve, and out the co-pilot's side firewall. A bit of trial and error to get the aluminum tube length right.

I also had to recess the firewall on the inside to get the firewall fitting to fit. It's only designed for so much thickness, and the firewall is pretty thick. I also used a dull wood bit spun in reverse to "indent" the stainless firewall somewhat. This helped get everything close enough to get the nut on and then tighten and compress the stainless and fiberfrax underneath.

Inside from the bottom of the sump tank to the firewall.

Fitting on the back side of the firewall.

- Jeff