Continued making the fuel pump tubing today, but first I had to make the threaded spacers for the fuel valve, in order to line up the tubes.
Here they are cut to length:
After drilling and tapping threads, I installed the fuel valve to the valve plate.
Then I installed the fuel valve covers
Now I was able to determine the length of the feed line…
Length marked to the center of the fuel valve outlet:
To calculate where to start the bend, I made a bend on another piece of tube, and measure the distance from the bend starting point to the finished bend centreline:
Then I marked the offset on the feed line tube.
To make the pump return tube (top one in the photo), I fitted the fuel valve and pump brackets in the aircraft:
Final photo with the covers installed.
Next is the tubes that go from the valve to fuel tanks. These are tricky ones…