Originally posted by F4UDOA
Widewing beat me to it but even the 109K-4 at sea level had 2,000HP and the P-51D had 1750HP and they both had the same top speed. So which aircraft had the higher drag?
It appears most of your similiar statements are suffering from the same problem - wrong data to start with.
For you again:
Bf 109 K-4
DB 605 DC
Power at SL = 2000 PS (1 PS = 0.986 HP) = 1972 HP
Speed at SL = 377 mph
P-51 D with 150 octane, 81 Hg"
V-1650-7
Power at SL = 1940 HP
Speed at SL = 379 mph
Also your comment about the P-51D not being able to disengage at fullpower because it would run out of fuel is rediculous. Just think about that.WEP time for P-51 D = 5 mins
WEP time for K-4 = 10 mins
Clear case.
Do you even know what the fuel consumption of the 109K4 is? I do I have a entire document on it. The 109 had limited amounts of C-3(Nitrous) and MW-50. It would run out of those additives long before the Mustang would run out of fuel or overheat.You don`t have anything on that, clearly. So much bs..
ad 1, C-3 is not "nitrous". You don`t even know that... :eek
ad 2, "nitrous" (GM-1 injection) was not used on K-4
ad 3, MW 50 quantity was aduquate for 26 mins of use at
full power .
ad 4, If the P-51 would run on 81" Hg for 26 mins, with 197 Impg/gall consumption as the Brit report notes, it would consume (26/60)*197*4.54 = 388 liter fuel, which means the ~1/3 of the full interal tankage which means you are DRY with your lightweight P-51D at 9000lbs a good time by then. And of course since the V-1650-7 could only run for 5 min at a time then some time has to be spent on cooldown, in fact you have even less fuel left.
etc.
I challenge you to post the documents you claim to have. You won`t do that of course, as you were just bluffing.
Further lies will only make your situation worse.
Also your sustained turn theory doesn't work if the other 109 has a higher stall speed than the P-51D.Post numbers and source.
If the 109 is pulling max G then he is deccelerating. If the P-51D is not pulling max G the he can still accelerate and fly on the edge indefinetely without loosing E while turning inside the 109.So the much worser accelerating P-51D can actually beat a K in situation when ability to accelerate is the key...

Acceleration at 250 mph:
K-4 : 6.85 fps
51D : 3.34 fps
You are welcomed to tell me it was the exact opposite, and the Mustang with the ~same drag (as shown above) was able to outaccelate the K-4 with about half the powerloading :
Powerloadings :
K-4 : 1972 HP / 3.362 t = 586 HP / t
51D :
1940 HP / 4.3 t = 450 HP / t [150 oct. at 81" w/o rear tank ]
1630 HP / 4.3 t = 380 HP / t [at 67"]
Notice though, the USAAF`s Mustang run on 71" inches, above data only true to British mustangs.