The introduction of the BMW 801 C-2 resulted in the Fw 190 A-2 model, first introduced in October 1941. As part of this upgrade, a modification to the exhaust system devised by III./JG 26's Technical Officer ("T.O.") Rolf Schrödeter was added. There were 13 exhausts for the 14 cylinders; eight of these were grouped to exit, four on each side, along the forward fuselage, just above the leading edge of the wing; under the forward centre section, between the undercarriage bays were five exhaust stacks, with cylinders 9 and 10 sharing a common pipe. To quickly implement the fix, it was found that the re-routing could be done easily in Gruppe workshops. The reduction in temperature affecting the bottom cylinder went a long way to solving the problem. The addition of new ventilation slots on the side of the fuselage further aided cooling, and with the widespread availability of the A-2 in the spring of 1942, the overheating problems were greatly reduced.
The A-2 wing weaponry was updated, with the two wing root-mounted 7.92 mm (.312 in) MG 17s being replaced by 20 mm MG 151/20E cannon. With the introduction of the new cannon, the Revi C12/C gunsight was upgraded to the new C12/D model. The introduction of the A-2 marked a shift in air supremacy from the British, with their Spitfire Mk V, to the Germans. German production records make no real distinction between A-2s and A-3s, which were very similar aircraft: the total combined production was 910 airframes between October 1941 and August 1942. In addition to Focke-Wulf and AGO, a new subcontractor, Arado, built A-2s and A-3s at Warnemunde.
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