The EMD SW7 was a diesel switcher locomotive built by General Motors Electro-Motive Division between October 1949 and January 1951. It was powered by a 1,200 horsepower 12-567A engine. The SW7 replaced the earlier 1,000 horsepower NW2 switcher in EMD's catalog. A total of 489 SW7 locomotives were produced. The majority of the SW7s were built by EMD Plant #3 in Cleveland, Ohio. In addition, 15 TR4 cow-calf paired sets were produced. SW7 production was discontinued in 1951 in favor of the new SW9.
Even though the SW7 was originally fitted with a 12-567A prime mover, this engine had the orignal prime mover replaced with a 12-567C. This happened to some SW7's over the years, as others types were rebuilt into 12-567AC's.
Recorded from a EMD SW7
This project is a normal idle version. It is an air throttle version. It has switcher type exhaust with 2 exhaust stacks.
File also contains an "Isolation Switch" Mode on F15 when Standing Still.
Pressing F15 while not moving will lower the prime mover and lock the motor. F15 must be turned off to begin moving.
Another Mode is "Reverser In Center Position". When pressing F24 while stopped, the motor will lock so you can throttle through the notches like the prototype in neutral. F24 must be turned off to begin moving.
This project has "Run 8" mode. When turning on F26 with F28 off, the prime mover goes to run 8. Turning off F26 returns the prime mover sounds back to normal mode.
This project has "Coast" mode. When turning on F27 with F28 off, the prime mover goes to idle for coasting purposes. Turning off F27 returns the prime mover sounds back to normal mode.
You can still use F26 and F27 for manual notching. You have to keep both F26 and F27 off before pressing F28 to turn on manual notching. Once F28 is on, you can use F26 to notch up and F27 to notch down. F26, F27, and F28 must be turned off to return to normal mode.
This project has "Load" mode. When turning on F29 with F15, F24, F26, F27, F28 off, the prime mover goes into load mode. While you are using load mode, the prime mover will notch up 1 or more notches based on primary load settings(CV104). The throttle notches up using speed instead of requested speed while using the load feature. F29 must be turned off to return to normal mode.
Prime mover volume selection mode. By default the prime mover has volume dynamics. Meaning idle is soft while notch 8 is loud. This is very prototypical. The next option is volume maxed out. Meaning idle and notch 8 are the same volume. This is more suitable for people who like it loud.
Change the sound configuration of the prime mover sound slot 1
CV31 = 16, CV32 = 1
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CV263 = 0 Prime Mover Dynamic Volume Control
CV263 = 1 Prime Mover Max Volume
1st Generation Switcher Horn Pack 2
Horns (SoundCV9):
CV163=0 Leslie S-25
CV163=1 Leslie S-31
CV163=2 Leslie A-75
CV163=3 Leslie A-125
CV163=4 Leslie A-200
CV163=5 Leslie RS-25
CV163=6 Leslie RS-31
CV163=7 Wabco E-2
CV163=8 Wabco A-2
CV163=9 Wabco AA-2
CV163=10 Leslie A-75 Ed2
CV163=11 Leslie A-125 Ed2
CV163=12 Leslie A-200 Ed2
CV163=13 Wabco E-2 Ed2
CV163=14 Leslie S-2M Ed2
CV163=15 Leslie S-2B
EMD 1st Generation Switcher Bell Template Pack 1
Bells (SoundCV10):
CV164=0 EMD 8004156 Bronze Bell 007
CV164=1 EMD 8475495 Steel Bell 011
CV164=2 EMD 8004156 Bronze Bell 008
CV164=3 EMD 8475495 Steel Bell 034
Auto Bell:
Many Second and Third Generation locomotives have been fitted with an Automatic Bell that is triggered when the horn is blown. In MANY cases this cannot even be bypassed on modern locos. Before the FRA mandated this feature on new locomotives the bell was of course turned on and off separately. Some locomotives were delivered with a manual bell and have been converted to an automatic bell. This creates a challenge in sound file creation.
We realize that not every loco with a particular prime mover had this feature. As such we have built in an option to turn the feature on and off. We will set the default in the file to be what is most appropriate for the particular file.
To turn the feature OFF - Auto Bell OFF:
1. Remove the Auto bell sound slot from the function mapping chart
CV31 = 16, CV32 = 8
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CV311 = 4
2. Change the sound configuration of the Auto bell sound slot
CV31 = 16, CV32 = 1
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CV287 = 0
To turn the feature ON - Auto Bell ON:
1. ADD the Auto bell sound slot from the function mapping chart
CV31 = 16, CV32 = 8
----------------------
CV311 = 12
2. Change the sound configuration of the Auto bell sound slot
CV31 = 16, CV32 = 1
----------------------
CV287 = 1
Auto Bell Timer:
The Bell timer is amount of time the bell will play after the horn if the auto timer is active. The timer is broken down into 1/4 of a second increments.
CV169=4 - 1 Second
CV169=8 - 2 Seconds
CV169=12 - 3 Seconds
CV169=16 - 4 Seconds
CV169=20 - 5 Seconds - Default
Etc...
Switcher Brake Squeal Template Pack 1
Brake Squeal (SoundCV11)
CV165=0 Composition Shoe #1
CV165=1 Cast Iron Shoe #1
EMD 1st Generation Switcher Air Dryer Template Pack 1
Air Dryer (SoundCV12)
CV166=0 NW2 Air Dryer 1
CV166=1 NW5 Air Dryer 1
CV166=2 SW7 Air Dryer 1
CV166=3 SW10 Air Dryer 1
S0560 - Release Notes
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V-2 R-2:
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- New Prime Mover Volume Mode