with 2,400 rpm, up to at 2,400 rpm and altitude, B4 fuel DB 601 Aa Up to at sea level with 2,500 rpm, up to at 2,400 rpm and altitude, B4 fuel DB 601 B-1Same as DB601 A-1 for use in Messerschmitt Bf 110 and/or bomber aircraft (different prop/engine ratio, 1:1.88 instead of 1:1.55) DB 601 BaSimilar to Aa for use in Messerschmitt Bf 110 and/or bomber aircraft (different prop/engine ratio, 1:1.88 instead of 1:1.55) DB 601 M For use in the Heinkel He 100D DB 601 N Up to at sea level and at altitude with 2,600 rpm, C3 fuel Up to at altitude with 2,600 rpm DB 601 P Same as DB 601 N for use in Messerschmitt Bf 110 and/or bomber aircraft (different prop/engine ratio, 1:1.88 instead of 1:1.55) DB 601 E Up to at sea level with 2,700 rpm, up to with 2.700 rpm at altitude, B4 fuel Up to at altitude with 2,700 rpm DB 601 F/G Same as DB 601 E for use in Messerschmitt Bf 110, Messerschmitt Me 210 and/or bomber aircraft (different prop/engine ratio,1:1.875 (601F), 1:2.06 (601G) instead of 1:1.685) DB 606 A/B Project initiated in February 1937, to "twin-up" two DB 601As or Es coupled to work on a single propeller shaft with all-up weight of some 1.5 tonnes; for use in Heinkel He 119 (one DB 606) and Messerschmitt Me 261 (twin DB 606) designs, where they worked well in their prototype airframes; saw first combat use with early Heinkel He 177As - 2,700 PS (1,986 kW) at sea level with a mirror-imaged starboard component engine supercharger. Derided as "welded-together engines" by Reichsmarschall Hermann Göring in August 1942, from the problems they caused with engine fires in the He 177A during service from their inadequate installation design. Alfa-Romeo R.A.1000 R.C.41-I MonsoneLicence built by Alfa Romeo in Italy Aichi AtsutaLicence built by Aichi in Japan Kawasaki Ha40Licence built by Kawasaki in Japan Applications DB 601 CANSA FC.20 Dornier Do 215 Heinkel He 100 Henschel Hs 130A-0 Kawasaki Ki-60 Messerschmitt Bf 109 Messerschmitt Bf 110 Messerschmitt Me 210 Savoia-Marchetti SM.88 DB 606 Heinkel He 119 Heinkel He 177A-1 and A-3 Junkers Ju 288C Messerschmitt Me 261 Licensees Aichi Atsuta Aichi M6A Yokosuka D4Y Alfa Romeo R.A.1000 R.C.41 Macchi C.202 Reggiane Re.2001 Kawasaki Ha40 Kawasaki Ki-61 Specifications (DB 601 Aa / Ba) See also References Bibliography Mankau, Heinz and Peter Petrick. Messerschmitt Bf