Mallard BASIC
It was also optimised for speed it is named after the LNER A4 class 4468 Mallard locomotive, the fastest steam locomotive in the world, once again displaying the company's fondness for railway-oriented nomenclature. (For instance, see the company name itself.) In fact the Locomotive name came from the phrase "To run like a train" and it was this theme that was used to name Mallard BASIC no other Locomotive product was named after anything railway-oriented.
Russian locomotive class Ye
In 1944 the first steam engines of the Е series, which was given index "a" (U.S.), resulting in the designation of Еа. The numbers of locomotives built by ALCO began at #2001 and the Baldwin built locomotives at #2201. In September the same year, the first Baldwin built locomotive (Еа-2201) was sent to the pilot ring VNIIZhT which was tested until October. In the course of the tests, it was found that forcing the boiler to , a cutoff of 60% and at a speed of , the engine could develop of tractive effort. It was also found that the locomotive could achieve , which was a 20–25% increase compared to the World War I engines (). The improved performance was achieved through improved boiler and the use of mechanical stoker. The temperature of superheated steam was typically 572–644 °F (300–340 °C), and no more than 698 °F (370 °C).