Poll: Which motor performance should have a FW-190A-4? - You do not have permission to vote in this poll.
Like FW-190A-3
5.45%
3
5.45%
with "1943 cockpit" and "1943 BMW 801 D2"
65.45%
36
65.45%
Like A-3 but with "1943 cockpit" and "gm1 mixture"
29.09%
16
29.09%
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Which performance should have the new Fw-190A-4?
#39

We have more details and we know the differences in the motor setups.

The top speed on SL can not grow from 540 km/h up to 560 km/h just because you have radiator flaps. If you have ever seen the radiators flaps of the Fw-190 and you have a little bit knowlege of aerodynamics you will see that the jump from 540 up to 560 km/h is something different.

An ETC 501, the bomb rack of a Fw 190 for exampel reduces the top speed up to 10-13 km/h. Compared with the radiator flaps the bomb rack is directly in he wind. So why should the flaps have an effect that reduces the top speed nearly 10 km/h more?

In early 1942 the BMW 801-D2 was derated and the A-3 made 540 km/h on SL. With the raise of the loading pressure in Summer 1942 upt to 1.42 ata the A-3 made 560 km/h on SL. The top speed of 565-567 Km/h on SL is a result of the updated BMW 801D-2 in summer 1943.
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