Today was my first real foray into the world of tubing bending.
The fuel system in the RV10 uses 3/8 aluminum tubing that needs comes in a big roll. In order to get this tubing to the places I need it to go, I have to unroll it and straighten it as good as possible, and then bend it to shape using a tubing bender. The first piece I needed to make has two 180* bends to go from the filter output into the pump input. Between forgetting to put the b-nut or sleeve on before bending and flaring, to cutting the last bit a little two short, I needed a few tries to get this piece just right. But starting on the hardest piece made the rest of the pieces of tubing that much easier.
The next section was to connect the two tunnel fuel fittings to the two input ports of the fuel selector valve. These were simply a pair of ~45* bends with a slight twist. The next connection was from the output of the fuel selector to the input of the fuel filter. And the final piece was from the output of the pump to the fitting on the firewall.
A few pieces had to be scrapped, but I’m happy with the way it turned out. And now that it’s done, I may yet change out some of these lines with stainless braided teflon lines. We’ll see!
