Bulletin: Big Boy

Big Boy

With a total weight of 548,3t and a power of 6.290 HP (@48 km/h) the Union Pacific Railroad (UP) class 4000 locomotives (well know as "Big Boy") is one of the most powerful steam locomotives on the world. The American Locomotive Company (ALCO) built a total of 25 units between 1941 and 1944. At a maximum speed of 112 km/h (70mph) the Big boy is also the fastest articulated steam engine at all.

Key Function Soundslots Volume CVs Volume value
Lightfront light, dynamo1940320
F1sound on/off1, 2, 22, 24259, 267, 427, 443128, 128, 50, 90
F2whistle3275128
F3bell4283128
F4coal shoveling 529180
F5air pump6299128
F6acceleration/brake time, shuting mode/shunting speed
F7curve squeal sound on/off1537170
F8AUX1
F9cylinder blow out9323128
F10conductor's signal1033170
F11coupler clank831580
F12sanding valve1133960
F13brake set/ release automatically1335540
F14station announcement #17307128
F15short whistle16379128
F16safety valve12347128
F17rail clank sound1738790
F18dumping14363100
F19crossing communication21419128
F20injector2041175
F21dynamo off/on