Piper J3
Well Known Member
I don't know if D-1000 can be adjusted after initial calibration. The D-180 that I have can't be changed and re-calibration would be required.
That being said, the design of the 912ULS fuel tank doesn't allow the electric resistance float sender to register above ~17 gallons because of the tapered shape of the top of the tank. Between 17–20 gallons will only register 17 gallons. If you start with a full tank you’ll need to burn off ~ 4 gallons before the fuel gage will begin to register actual amount in the tank. If you tell the fuel computer that the tank is full it will begin registering fuel burned and amount remaining to waypoint right from the start of the flight.
That being said, the design of the 912ULS fuel tank doesn't allow the electric resistance float sender to register above ~17 gallons because of the tapered shape of the top of the tank. Between 17–20 gallons will only register 17 gallons. If you start with a full tank you’ll need to burn off ~ 4 gallons before the fuel gage will begin to register actual amount in the tank. If you tell the fuel computer that the tank is full it will begin registering fuel burned and amount remaining to waypoint right from the start of the flight.