Now that I'm getting close to permanently mounting the fuel tanks on the wing, I thought it would be a good time to pressure test them once again.
This time I used the method that Pascal Latten mentioned in his blog with a manometer. I blocked one of the fuel connections with an AN-6 Cap, then connected some hose to a barbed fitting and put some water in the line. I then connected a smaller hose to the overflow and blew into it. Not much pressure, just enough to raise the water a bit. Then just use a measuring tape on the wall and some tape to mark the starting and ending positions. Take note of the date, temperature and atmospheric pressure. Then.. wait. Depending on the temperature and pressure differences over the next 24-48 hours, the water level will vary. I kept mine connected for 3-4 days each and didn't see much of a drop below a certain point so I figure it was a solid seal. Comments are closed.
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