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My Airplane Projects
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Date: 1-19-2011
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Number of Hours: 6.00
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Manual Reference:
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Brief Description: Weighed airplane, worked on fuel calibration.
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Drove through the snow to the airport. Met up with Doug Sterling, friend, former student, and EAA Tech Counselor. He also owns scales! We did the weigh-in and recorded all the numbers. Later when I did the calculation I was pleased to find that I can carry two 200 pound guys, 20 pounds of baggage, and full fuel and still be under gross weight, even with all the optional kits and the fancy paint. Not bad!
Bill helped me "dish" the corners of the avionics bay cover, so I don't have to trim more fiberglass back. Then I installed the cover with its gazillion screws, hoping not to have to take it off again. Fired up the Dynon and increased the "K" factor to 96000.
Took the plane out to the fuel pump to do the fuel gauge calibration. Added the first four gallons and checked the position of the placard on the tank gauge. Seems perfectly placed. Continued adding fuel in 2 gallon increments, however the Dynon is not sensing any increase in level. Discontinued filling after 10 gallons, as it appears I will have to drain this and start over.
Moved back into hangar. Rocked the plane agressively to try and dislodge the sender float if it was stuck. No luck, the Dynon reads a continuous level of 500. Measured the resistance of the fuel sender. Got some funky readings, and I'm suspecting a bad ground.
First thing tomorrow I will try putting a known value resistor across the sensor wire, to verify that the problem is not in the Dynon or the wiring. If the problem seems to be in the tank, I will add a grounding strap from the inner sender flange to the airframe. Others have reported this problem and have solved it in this way. Hoping for a simple solution!
Tonight working on setting up the maintenance logbooks.
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Doug weighing in.
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Me nervous - will it fall off the scales?
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