Brief Description: Fuel Flow and Unusable Fuel Testing
Fuel Flow and Unusable Fuel Testing. Added minimum fuel to each tank (2 gallons) and completed flow test of main tanks. Left tank: 61.8 GPH flow / Right Tank: 61.8 GPH Flow. 3,900 ml per minute = 1.03 GPM or 61.8 GPH.
Lycoming publishes 14.7 GPH at max rated HP. 125% of max flow = 18.4 GPH. Fuel flow well within guidelines.
Drained fuel and measured fuel remaining - 2oz per tank for a total of 4 oz of unusuable fuel.
Tests were completed for in-flight conditions for cruise (with aircraft leveled in all axes) and in a pitch up climb attitude. No notable difference in flow.