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Steve & Nancy Riffe
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Date: 4-2-2011
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Number of Hours: 1.50
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Manual Reference:
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Brief Description: Tank Testing-R-Tank-Part 1
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Still need to go in search of some double sided tape to mount the plexi lens in the wing. I did trim the plexi on the bottom side to allow it to be inserted into the wing a little easier. Since I couldn’t finish the light install, I decided to test the fuel tank for the right wing. My son, Darren was in town, so he helped me set up a manometer. We capped the fuel outlet fitting, added a piece of duct tape over the fuel filler and screwed the Schrader valve into the drain flange. Then we coated the fuel vent fitting with fuel lube and screwed on a 10’ piece of clear vinyl tubing. Darren helped me move the wing back into the cradle. We clamped a 1x2 to the end of the cradle to hold the tube. The vinyl tube loops out of the fuel vent, down to the floor and back up the 1x2. I poured water in the open tube whlile Darren checked until it was equal on both sides of the loop. Didn’t have a bicycle pump, so I used the air compressor to add some air thru the Schrader valve. This sounds a bit scary, but the pressure was just above off. After a couple of short bursts, the water level moved up the tube. Added more air until we had 27” from the level of the open end of the tube to the level in the other end of the tube. I marked the 27” line on the 1x2. The 27” mark represents approximately 1 psi in the tank. I set a thermometer on the spar and recorded time & temp—checked it every hour or two. The level went up with temp increase and has since started back down after the temp began falling. Will check again tomorrow and see where the level is. The QB tanks are tested before shipment, however this test should verify the QB builders sealing efforts as well as my sealing of the end plates.
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Capped fuel inlet, tubing on vent line
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Manometer--basically a stick and vinyl tube
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