Press the green flag and you should hear the locomotive startup and enter idle. The left arrow makes you move forward at a slow/fast pace. The right arrow makes you go backward at a slow/fast pace. B controls the bell. H and J control the horn Leslie S3LR Space is the brake that sets the locomotive speed to 0. Thanks to Jean Dennis-Bachman for the drawings
Drawings by Jean Dennis-Bachman -History of the DD40AX- The DD40AX was produced by General Motors-Electro Motive Division for Union Pacific Railroad. The DD40AX was nicknamed "Centennials" because the time that they were built was around Union Pacific's 100th anniversary they were also nicknamed "Big Jack". The DD40AX uses two prime movers instead of the normal just one, both prime movers output 3,300 horsepower. No USA locomotive could output this much horsepower (6,600 hp) but some locomotives have come close such as the SD90MAC and the AC6000CW. The DD40AX is the third most powerful internal-combustion locomotive ever build only being exceeded by the Russian Railways GT1, and the Union Pacific GTEL gas turbines units and certain steam locomotives. It is also the longest single unit locomotive ever built. They were numbered #6900-#6946. In 1969, Union Pacific was retiring their last gas turbines electrics locomotives, Union Pacific had already ordered EMD DD35's and EMD DD35A's to replace the turbines, the DD40AX was still in further development. Forty-seven units were built between June 1969 and September 1971. Except #6900 which was delivered in April in time to participate in the celebration of the 100th anniversary of the First Transcontinental Railroad. Out of the 47 built 13 survive to this day including #6900. Also, #6936 is still running in active service with Union Pacific for their excursion trains. The DD40AX weighed 545,000 lb. and It was powered by 2 EMD 645E34 16 cylinders V16 turbocharged diesel.
