Messerschmitt Bf 109 was called the Me 109R, suggesting it was just another variant of the standard fighter, but in fact it was a racing aircraft having little in common with the Bf 109. It was powered by the DB 601ARJ, producing 1,156 kW (1,550 hp), but capable of reaching 1,715 kW (2,300 hp). This world record for a piston-engined aircraft was to stand until 1969, when Darryl Greenamyer's modified Grumman F8F Bearcat, "Conquest I", broke it with a 777 km/h (483 mph) record speed. When the Bf 109 was designed in 1934, by a team led by Willy Messerschmitt and Robert Lusser,
Messerschmitt Bf 109 operational history aircraft). By November 1944 the 101. was re-organized into a fighter regiment, and was re-equipped with the latest Messerschmitt Bf 109 G-10 and G-14 types. At the end of December the pilots received new Bf 109s at Wiener-Neustadt and were subsequently transferred to the Kenyeri airfield. Early in February 101 Fighter Wing received 26 brand new Bf 109 G-10/U4s with the instructions that their engines had to be changed after 30–40 operating hours. However, combat missions against the 15th USAAF came to an end, and the 101st's main adversary in the air became the Red Air Force. The Hungarian pilots