Built some tire stands to elevate the front of the aircraft. Ultimately able to simulate 30% grade/17 degree climb angle.
First filled 5 gallons of fuel and checked for leaks; none found. Ran a few gallons through the fuel system to flush out anything. Filtered this back into the tank.
I ran my test 5 times to one liter. Then twice to one gallon. See N723WT FUEL FLOW TEST REPORT for detail.
Flow was variable between 18.6 and 16.5 gallons ( the lower flow was with the larger drain volumes and I think were slowed by the declining volume of fuel in the tank) an hour with the mean of 17.1 gallons per hour at high angle of attack.
So, say a generous maximum fuel flow to the AeroVee of 9 GPH. Thus, a 150% safety value would be 13.5 GPH.
Fuel flow for N723WT (Trawick Sonex) is 190% of the maximum expected fuel flow. The mandated FAA safety margin is therefore exceeded.
