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 until 1904 when it was acquired by the Soo Line. The USRA Heavy Mikado was a USRA standard class of steam locomotive designed under the control of the United States Railroad Administration (USRA), the nationalized railroad system in the United States during World War I. These locomotives were of 2-8-2 wheel arrangement in the Whyte notation, or 1′D1′ in UIC classification. A total of 233 locomotives were built to this plan for the USRA; postwar, it became a de facto standard design, which was built to the total of 957 locomotives including the USRA originals and all subsequent copies.
Heavy Mikado used the same running gear as the USRA Light Mikado but were built to a higher axle load, larger cylinders and a much larger boiler for more power and steam-generating ability. Many aspects of the PRR L1s class were carried over to the Heavy Mikado, although not that locomotive's distinctive Belpaire firebox
Whistles:
CV163=0 UP 844 "Steamboat"
CV163=1 SP&S 3 Chime
CV163=2 SP 4449 Daylight
CV163=3 New York Central 6 chime
CV163=4 SOO Line 1003 - Default
CV163=5 CB&Q Crosby 3 Chime
CV163=6 CB&Q 5-chime short bell
Bells:
CV164=0 Pnuematic Bell 1
CV164=1 Pnuematic Bell 2
CV164=2 Steam Loco Rope Pull Bell
CV164=3 SOO Line 1003 Bell - Default
CV164=4 UP 844 Air Ringer Bell
CV164=5 SP 4449 Bell
CV164=6 DRG&W K27 Bell
Dynamos:
CV165=0 Soo Line 1003 Dynamo
CV165=1 K27 463 Dynamo
CV165=2 SPTriple Dynamo
CV165=3 UP Dual Dynamo
CV165=4 Z27 Dynamo
CV165=5 T16.1 Dynamo
Air Pumps
CV166=0 Cross Compound #1 Soo Line 1003
CV166=1 Cross Compound #2 K27 463
CV166=2 Cross Compound #3 SP 4449
CV166=3 Cross Compound #4UP 844
CV166=4 Single Stage #1 Z27
CV166=5 Single Stage #2 T16.1
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 full chuff or drifting with snifters and rod clanks. Heavy load can also act as an offset allowing speed adjustments when engaged if desired.
Coast: F4 by default.
Opposite of “Heavy Load” Coast allows for a negative offset allow drifting sounds of Rods and snifter valves at any speed. You again have the option to hold the speed to adjust the speed with this offset active. Even allowing for an increase of speed with no chuffs as if drifting downhill.
Independent brake: F10 by default
Identical to the Full Throttle Diesel files. This allows for the locomotive to stop more quickly than its regular momentum would normally carry it. This one is pretty self-explanatory – just press the brake and come to a stop! For additional options there are 3 Braking rates that can be set up for user preference.
Articulation: Sound Slot 2
By adding Sound Slot 2 to the F8 Function Mapping and enabling the "Secondary Trigger" (CV250) you can add a second set of drivers making any ESU Steam File articulated.
Function Mappable Air Horn: F21 by default
Sound Slot 21.
Many Steam locomotives had a single chime airhorn equipped. Those modelling SP, MILW, and others can now have this feature and put it where they would like in the function mapping in addition to the whistle.
S0514 - Release Notes
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V-3 R-3:
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- updated independent brake
- updated boiler hiss
- updated steam chuff sound slot
V-4 R-4:
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- changed whistle sound slot 3 maximum sound slot speed to 128