KatanaPilot
Well Known Member
Just performed the FF tests for inspection, as well as calibration of the fuel senders/gauges (G3X through GEA).
We leveled the airplane for the calibrations and pumped all we could out of the tanks. From the fuel supply tank, we pumped out 1 gallon into a one gallon can and 5 gallons to a 5 gallon can (to their respective full lines) to "calibrate" the supply pump gauge.
Doing that, we found that we could only get about 39 gallons in to the tanks versus the specified 42 gallons. Either we have about 3 gallons of unusable
fuel or the supply tank gauge and our calibration of the gauge is way off.
The left tank has a flop tube which I assume could be a less effective pickup than the stock Van's.
I did search and what I found were most folks had ounces of unusable fuel and some got more than 42 gallons into their tanks. Anyone else have gallons unusable like it appears we do?
We leveled the airplane for the calibrations and pumped all we could out of the tanks. From the fuel supply tank, we pumped out 1 gallon into a one gallon can and 5 gallons to a 5 gallon can (to their respective full lines) to "calibrate" the supply pump gauge.
Doing that, we found that we could only get about 39 gallons in to the tanks versus the specified 42 gallons. Either we have about 3 gallons of unusable
fuel or the supply tank gauge and our calibration of the gauge is way off.
The left tank has a flop tube which I assume could be a less effective pickup than the stock Van's.
I did search and what I found were most folks had ounces of unusable fuel and some got more than 42 gallons into their tanks. Anyone else have gallons unusable like it appears we do?