Who has measured their actual flow rate?
Has anybody here (excluding those with a Shadin or similar flowmeter) does an actual measurement of their plane's fuel flow rate in cruise, when a) full rich and b) leaned to peak EGT?
It needs two flights: one with a short enroute section and another identical one with a longer enroute section; the difference gives you the enroute power setting fuel flow.
If you haven't done this, how do you work out your fuel planning?