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During the late 1930s, the Union Pacific often used helpers to move trains from Ogden to Wasatch. The UP wanted to simplify this move so they asked their "Department of Research and Mechanical Standards" (DoRMS) to design a locomotive that could pull a 3600 ton train unassisted over the 1.14% grade of the Wasatch.
The designers determined that to pull a 3600 ton train, a tractive effort of 135,000 lbs would be needed. Assuming a factor of adhesion of 4.0, the weight on drivers would have to be more…
Equipped with ESU "FULL THROTTLE STEAM" features!
MUST use LokProgrammer Version 4.5.1 or newer.
D&RGW (Cumbres and Toltec) K27 463
The ESU Full Throttle Steam files now include a few new logic features for added operational realism while still leaving you in control of HOW you wish to run your locomotive.
Heavy Load: F9 by default.
Similar to the “Drive Hold” button on the Full Throttle Diesel files “Heavy Load” allows you to adjust the “Steam Cut Off Valve” at any speed allowing for a more…
Equipped with ESU "FULL THROTTLE STEAM" features!
MUST use LokProgrammer Version 4.5.1 or newer.
N.S.W.G.R. Class Z27 2705
**Please Note**
Responding to user feedback this file uses "Standard North American Function Mapping".
This is a template used for all steam files from ESU LLC.
While we realize most Australian Locomotives do not use Bells or Air Horns they are included in the mapping due to the template used. This is easily changable so the user can set the function mapping work as more…
The Shay locomotive was the most widely used geared steam locomotive. The locomotives were built to the patents of Ephraim Shay, who has been credited with the popularization of the concept of a geared steam locomotive.
Shay locomotives had regular fire-tube boilers offset to the left to provide space for, and counterbalance the weight of, a two or three cylinder "motor," mounted vertically on the right with longitudinal drive shafts extending fore and aft from the crankshaft at wheel axle more…
Equipped with ESU "FULL THROTTLE STEAM" features!
MUST use LokProgrammer Version 4.5.1 or newer.
The 2-8-2 wheel configuration on steam locomotives was one of the most highly used configurations made. This type of locomotive with 2 pilot wheels, 8 drive wheels, and 2 trailing wheels to support a larger firebox was first built for the Emperor of Japan, thus the name Mikado type. The first Mikado built for service in the US was built in 1901 and was owed by the Bismarck, Washburn and Great Falls more…
Equipped with ESU "FULL THROTTLE STEAM" features!
MUST use LokProgrammer Version 4.5.1 or newer.
SP 4449 4-8-4 GS-4 "Daylight"
The ESU Full Throttle Steam files now include a few new logic features for added operational realism while still leaving you in control of HOW you wish to run your locomotive.
Heavy Load: F9 by default.
Similar to the “Drive Hold” button on the Full Throttle Diesel files “Heavy Load” allows you to adjust the “Steam Cut Off Valve” at any speed allowing for a fierce more…
Equipped with ESU "FULL THROTTLE STEAM" features!
MUST use LokProgrammer Version 4.5.1 or newer.
Recorded from UP FEF 4-8-4 Northern #844
Built in 1944 Steam Locomotive No. 844 is the last steam locomotive built for Union Pacific Railroad. Made for passenger service it also hauled some freight in the late 1950s. Still serving today it has become Union Pacific's "Living Legend" as it holds the world record for longest contiuosly running steam locomotive!
With 80 inch Drivers, 300lbs of boiler more…
Equipped with ESU "FULL THROTTLE STEAM" features!
MUST use LokProgrammer Version 4.5.1 or newer.
The name Challenger was given to steam locomotives with a 4-6-6-4 wheel arrangement. This means that they have four wheels in the leading "pilot" truck, which helps guide the locomotive into curves; two sets of six "driving" wheels, and finally, four "trailing" wheels, which support the rear of the engine and its massive firebox. Each set of driving wheels has its own steam cylinder. In essence, more…