fuel flow test 914
in General Tech Discussion
5 years ago
I'm wondering what the best fuel flow test is for the 914, which is very similar to a fuel injected engine in that it requires fuel pumps that push a lot of fuel to a regulator, with most of it being returned to the header tank.
A "typical" fuel flow test whereby one puts the aircraft in an extreme nose up attitude and then disconnects the hose at the carburetor, does not seem logical because the pumps will need to be turned on, and the fuel flow will likely be in the 35 gph range (the 914 requires only 8.7 gph at takeoff performance).
Doing a gravity test at the pump inlets also doesn't seem all that helpful because the pumps have considerable suction and can undoubtedly deliver far more fuel than gravity alone.
Suggestions?
A "typical" fuel flow test whereby one puts the aircraft in an extreme nose up attitude and then disconnects the hose at the carburetor, does not seem logical because the pumps will need to be turned on, and the fuel flow will likely be in the 35 gph range (the 914 requires only 8.7 gph at takeoff performance).
Doing a gravity test at the pump inlets also doesn't seem all that helpful because the pumps have considerable suction and can undoubtedly deliver far more fuel than gravity alone.
Suggestions?
