eCalc estimates for throttle @hover have grossly changed in recent versions at least for my KDE 2814XF-515 motors.
According to eCalc throttle @hover should be 65%. In reality it averages ~45% with the exact same configuration as shown below. When first considering building this quadcopter, eCalc was close to reality when using 13x5.5 APC props and 12000 mah battery. I clearly remember plugging the numbers in and being satisfied my motor/prop/weight combination would work and were well below 50%.
I have contacted eCalc and their position at first was I must not be interpreting the flight data correctly. This is nonsense, as the flight logs clearly show Throut and Thrin both firmly below 50% @hover in stab mode. If eCalc data were correct, the copter would barely have enough power after takeoff. The pwm agrees.
eCalc says current draw is 6.07A * 4= 24.28A total. Reality is ~20A. On my Y6 eCalc says 36A. Reality is ~26.
I don't know how many scenarios these errors apply to. This is just a cautionary note to double check eCalc before using it.