Originally posted by Grits
Several planes have legitimate issues with the performance numbers. The 190's are too heavy, the 109F is supposed to be at 1.42 ATA but it does not reach the top speed it should at that boost, the 109G-14 is slower than it should be in WEP, the F6F is 10-15mph too slow, the P-40b is around 400-500 fps short of its proper climb rate, the P-38L seems to have its speed a little too slow at high alt.
Our P-40B is at least 20 mph too slow at critical altitude (332 mph, should be 352-355 mph).
The P-38L doesn't model full rated power, but models the USAAF derating instead. The derated power settings are what the AAF placed in their manual, carrying over the charts from the P-38J verbatim (which had different engines than the L model). Allison and Lockheed rated the F30 engines on the P-38L at 1,725 hp in WEP as opposed to 1,600 hp for the P-38J. If the AH2 P-38L were modeled with full factory rated power, there would be an increase in speed (at all altitudes), climb rate and acceleration. While this would be happily received by the fans of the P-38, it would not be well received by most others.
As to the 109s: I went offline and tested each plane at their limits. There is not doubt that the 109s become extremely twitchy at high AoA, requiring a lot of rudder work to offset. With a little practice, you can deal with it. In contrast, the P-51s were not nearly as twitchy. They would drop a wing just like the 109s, but required notably less rudder dancing to fly at the edge.
I did not find that the F-4 was worse than any other model. All were about the same in my estimation.
I do not recall when this started, largely because I don't fly 109s with great frequency as of late, with the exception of the 109F-4, which I use quite a bit in the TA for training. I still have AH1 on my machine, so I think I'll compare the respective 109 flight models (F-4, G-2, G-6) to what we have now. I'll report what I see.
My regards,
Widewing