Reading the HE-111 Fuel Gauge?

[=KG76=flyus747]

This is a question for both the H6 and H16 models. If you want to know how to read the fuel gauge on the 111s refer to this:

 

Without further adieu...

 

I selected 1500 liters for both and consistently come up short when I do the math in-flight. I find myself always short by around ~250 liters. The lower amount of fuel you select, the less pronounced the disparity is.

 

1. Heinkel He-111 H6

 

Calculations (H6)

Inner: 250 liters

Outer: 240 liters

Hull: 290 liters

2(Inner+Outer) + Hull = Total Fuel on Board

 - 2(250+240) + 290 = 

 - - 2(490) + 290 = 

 - - - 980 + 290 = 

 - - - - 1270 liters

1270 liters out of the originally selected 1500, we are shorted ~230 liters.

 

 

2. Heinkel He-111 H16

Calculations (H16)

Inner: 320 liters

Outer: 300 liters

2(Inner+Outer) = Fuel on Board 

 - 2(320+300) = 

 - - 2(620) = 

 - - - 1240 liters

1240 liters out of 1500 selected. Short by 260 liters.

 

Is there a piece of information I am missing? 250 liters means anywhere between 30-60min extra flight time, what am I doing wrong?

 

Edited March 25, 2020 by =KG76=flyus747

[JimTM]

Do you get the same readings on the ground?

[=KG76=flyus747]

9 hours ago, JimTM said:

Do you get the same readings on the ground?

Affirm.