[Test Pilot]

FW190D11 The best I can get Sea level 50% Fuel Crimea RAD closed, MW50, 1G flight start at 400Kmh then accelerate is 640Kmh TAS (Ps=0)

Interesting table there test pilot shows trhe TA152C1 to have the same wing section as the D9 i.e. NACA230. Takeoff weights seem to agree with the Monogram data at 5300Kg for the C1 is some charts, though thr top charts is at variance.

As to climb times using book RPMS its not really valid in IL2 as the Displayed RPM/ATA versus power relationship is not accurate but rather approximate.

The only "accurate" indication of in game power is the %read out. To put it in modern terms Mil power is 100% in IL2, Max Power is 110%/WEP. Normal climb schedule would be 100% power.

I think if you get 640 km/h at deck in D-11 you could get also the same value as me ~ 657 km/h.

I made my test with 100% fuel. Just trimm your plane, keep 10m height and give it some time. I'm sure you will get the same result.

I see that many people here have problem to achive maximum speed of testing planes ( not only Dora but i saw than in 109 and others also have problems). I dont know what sort of diffcult they meet. I have no problem to test and achive maxium speed of planes not only at sea level also at height. It need a little patience and some carefully in handling but it is not so difficult. Remeber that is much easier when you trimm plane to straight flight. Always must be remember to close radiators (some planes have auto) and set maximum power ( WEP, MW50 etc).

And the most important - Speed Bar and Speedometr show only Indicated Air Speed which in these game is different also at the sea level. If you want to check True Air Speed you must set cocpit off to see True AIR Speed . I think most people dont know about it. IN game difference between IAS and TAS at sea level is ab. 20 km/h.