Yo! I've recently run some top speed trials with the P-38F (using the training arena and FH 1.67, of course). Now, most sources I've seen state that the P-38F could reach a speed of 395 mph @ 25,000 feet (635 km/h @ 7585 meters). Unfortunately, our P-38F falls a bit short of those specs. Here are my results (speeds measured using the .showdata command): MIL: 603.2 km/h (374.9 mph) WEP: 611.49 km/h (380 mph) The MIL speed reading was taken when I had between 55 and 60% fuel left. WEP speed was taken at around 50% fuel left. I did take off with 100%, but airstart was disabled so I had to use up a lot of fuel just getting to the test altitude. The speeds I stated really are the fastest the plane would go. I made sure I'd wait until the speed readout didn't change anymore for a full minute.

can you show fhl max speeds of p-38 foxtrot at several altitudes, say 100ft, 5000ft, 10000ft, 15000ft, 20000ft, 25000ft, 30000ft? and quote most sources showing developers which differences we have in detail?

For real life figures, go here: http://www.wwiiaircraftperformance.org/p-38/p-38f-tactical-trials.html and click the Inclosure No. 2 link. On page 2 of the PDF, you can see that the tested P-38F reached a true airspeed of 392 mph at 25 kft, using a manifold pressure of 40.5 inches at 2,800 RPM (I suppose that would be our WEP setting).

Here's what I have so far (numbers in parentheses are the amount of fuel left when the reading was taken): Code: MIL WEP 00 kft 481.19 km/h = 299.06 mph (90%) 500.94 km/h = 311.37 mph (80%) 05 kft 522.26 km/h = 324.60 mph (80%) 548.33 km/h = 340.79 mph (75%) 10 kft 560.47 km/h = 348.33 mph (80%) 579.67 km/h = 360.27 mph (75%) 15 kft 587.35 km/h = 365.04 mph (75%) 604.11 km/h = 375.46 mph (65%) 20 kft 607.00 km/h = 377.25 mph (90%) 614.00 km/h = 381.60 mph (80%) 25 kft 603.20 km/h = 374.89 mph (55%) 611.49 km/h = 380.04 mph (50%) I will edit this post to add more results later.

I have top speed/climb tests since long time ago, but i have to do turn test, and those are quite dificult to me. I think i cannt do that test, and in mid september i must go out of my city again until mar '09. I will send you all data that i have, hoping that anyone can finish it.

It is any regular method how to test turn speed and stall speed? It looks like our p38 is close to mainfold pressure 38(dunno what it is, lbs per inch2?) and 2600 RPM.