I did a fuel flow test today (removed fuel line from carb). I measured 26.6 gph. This is a stock set up (Van's fuel pump, gasocolator and lines as per the drawings.
Does anyone have numbers to compare?
...my configuration is: Tank---Selector Valve---Electric fuel pump---gascolator---fuel flow transducer---carburetor. Fuel flow was measured at the carb.
Everything I've read suggests the plane should be in climb attitude (maybe even the best angle of climb) when the fuel flow test is being made. Is that the case? If so/if not, how high will I need to get the mains above the tailwheel to perform a useful test.Plane should be level when test is performed to elliminate the losses due to lifting the fuel.
Vern seems to have a rationale for why he chose to do what he did a few posts above, but does anyone know whether there is a "proper" attitude for the a/c during this test? I've looked in AC43.13 and in the FAA flight test circular but couldn't find any guidance on the appropriate attitude at which to do the flow test. Has anyone gotten an answer from Van's on this?Everything I've read suggests the plane should be in climb attitude (maybe even the best angle of climb) when the fuel flow test is being made. Is that the case? If so/if not, how high will I need to get the mains above the tailwheel to perform a useful test.