Just got home from a long day to find this.
1. JoeBlogs- Don't apologize for being too compicated. If I understand it's not complicated. What your saying makes pefect sence.
2. Crowbaby- You keep comparing apples and oranges and your making this much more comlicated than it is really.
A. Don't use any power condition other than full Mil power for testing. Nobody flies anything other than full mil power in AH anyway and it skews the results when you change to normal or max continious. For the purpose of testing use the La-7 vrs F6F or F4U-1D(The -1D had 237gallons of fuel internal).
B. You have referred several times to the extra weight of the F4U and F6F compared to the La-7. Also you have mentioned range. None of this is relavent when you are testing endurance at a given power setting.
Pretend the R-2800 and ASH-82FN are sitting in jack stands in a garage IE there is no airplane. I set them both to run at mil power. How long does it take the ASH-82FN to burn 122 gallons of fuel? How long does the R-2800 take to burn 237gallons and then 250Gallons. That's all I need to know to prove my point.
La-7 122 US gallons internal
ASH-82FN
Rating (military, low) 1650 HP/2400 RPM/5400 ft
F4U-1D 237 US Gallons internal
R-2800-8W
Rating Mil Low 2000HP/2700RPM/2500FT
F6F-5 250 US Gallons Internal
R-2800-10W
Rating Mil Low 2000HP/2700RPM/2500FT
Meaning that
1. Fact- The ASH-82FN put out 82.5 percent of the power of the F4U/F6F at equivilent power settings.
2. Fact- The F4U had 49% more internal fuel.
3. Fact- The F6F had 52% more internal fuel.
4. Fact- In AH the La-7 has equal
flight time duration at mil power as the F4U-1D and 2 minutes less than the F6F-5
My point of contention.
Question How does the ASH-82FN produce 82.5% of the HP of the R-2800 and only burn 50% of the fuel during the same time period

. I do not believe this is possible.