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Model Information: The Atlas GP7, GP7-TT, GP9 and GP9-TT models are some of Atlas' oldest models. The four locomotives share the same internal mechanisms and differ only in their shell details. Unlike many of their other older body styles, these bodies have been updated several times and are still a regular part of the Atlas production cycle.
Given their long history of releases, these models come in a plethora of different versions. The first release of this body type was in 1974 and the models were produced by Roco in Austria. Production for these models ended in 1982. The next release started in 1987 and the models were re-tooled by Kato in Japan for Atlas. The Kato version re-used the same mechanism as was used in the earlier RS3. It doesn't work as well in the Geep. The third version was made in China for Atlas and these engines were essentially a redo of the Kato mechanism (with all the faults). Finally, in 2006, the mechanism was redone properly and this 4th version is a properly DCC-Ready split frame, slow-motor modern engine.
Assembly instructions from Atlas: GP9 (Japan version), GP9 Ph.2 (China version), GP9 Torpedo Tube.
Given their long history of releases, these models come in a plethora of different versions. The first release of this body type was in 1974 and the models were produced by Roco in Austria. Production for these models ended in 1982. The next release started in 1987 and the models were re-tooled by Kato in Japan for Atlas. The Kato version re-used the same mechanism as was used in the earlier RS3. It doesn't work as well in the Geep. The third version was made in China for Atlas and these engines were essentially a redo of the Kato mechanism (with all the faults). Finally, in 2006, the mechanism was redone properly and this 4th version is a properly DCC-Ready split frame, slow-motor modern engine.
Assembly instructions from Atlas: GP9 (Japan version), GP9 Ph.2 (China version), GP9 Torpedo Tube.
DCC Information: The first version of this engine (Roco) gets a solid "No" for DCC capability, but this is no surprise as these were made in 1974. The next two releases (Kato and China) are split-frame, but also split-board. They may be DCC-Friendly, but likely it will be a fair amount of work to upgrade these. The most recent version (China, 2006+) is eminently DCC-Ready. Furthermore, most road-names and numbers produced since 2006 are available in both a DCC-Ready and a Decoder-Equipped version. Earlier DCC factory-equipped versions were fitted with Lenz LE063XF decoders, whereas most recent versions are fitted with NCE N12A2 decoders. The Atlas version of these decoders will respond to manufacturer's address "127" (CV8) i.e. "Atlas Model Railroad Products", though being identical to their original manufacturer's specification.
For non-DCC-ready versions, a wired DCC decoder installation for this model can be found on Brad Myers' N-scale DCC decoder installs blog.
Models produced since 2006 accept the following plug-in decoders:
- Digitrax DN163A4: 1.5 Amp N Scale Board Replacement Mobile Decoder for Atlas GP30 and other short Atlas diesel locomotives.
- Digitrax DN163A2: Retired decoder, replaced by DN163A4.
- NCE N12A2: Plug and play decoder for N-Scale Atlas Classic Series GP7, GP9, GP30, GP35.
- TCS ASD4 (Installation for GP7, Installation for GP9)
- MRC 1955: N-Scale Sound Decoder for Atlas GP-7, GP-9, GP-30 or GP-35
For non-DCC-ready versions, a wired DCC decoder installation for this model can be found on Brad Myers' N-scale DCC decoder installs blog.
Models produced since 2006 accept the following plug-in decoders:
- Digitrax DN163A4: 1.5 Amp N Scale Board Replacement Mobile Decoder for Atlas GP30 and other short Atlas diesel locomotives.
- Digitrax DN163A2: Retired decoder, replaced by DN163A4.
- NCE N12A2: Plug and play decoder for N-Scale Atlas Classic Series GP7, GP9, GP30, GP35.
- TCS ASD4 (Installation for GP7, Installation for GP9)
- MRC 1955: N-Scale Sound Decoder for Atlas GP-7, GP-9, GP-30 or GP-35
Prototype History: 
An EMD GP9 is a four-axle diesel-electric locomotive built by General Motors' Electro-Motive Division in the United States, and General Motors Diesel in Canada between January, 1954, and August, 1963. US production ended in December, 1959, while an additional thirteen units were built in Canada, including the last two in August, 1963. Power was provided by an EMD 567C sixteen-cylinder engine which generated 1,750 horsepower (1.30 MW). This locomotive type was offered both with and without control cabs; locomotives built without control cabs were called GP9B locomotives. All GP9B locomotives were built in the United States between February, 1954, and December, 1959.
One option available for locomotives without dynamic brakes, was to remove the two 22.5 in × 102 in (571.5 mm × 2,590.8 mm) air reservoir tanks from under the frame, and replace them with four 12 in × 150.25 in (304.80 mm × 3,816.35 mm) tanks that were installed on the roof of the locomotive, above the prime mover. These “torpedo tubes” as they were nicknamed, enabled the fuel and water tanks to be increased to 1,100 US gallons (4,200 l; 920 imp gal) each, although some railroads opted for roof-mounted air tanks and 2,200 US gallons (8,300 l; 1,800 imp gal) fuel tanks on their freight ‘Geeps’.
From Wikipedia
One option available for locomotives without dynamic brakes, was to remove the two 22.5 in × 102 in (571.5 mm × 2,590.8 mm) air reservoir tanks from under the frame, and replace them with four 12 in × 150.25 in (304.80 mm × 3,816.35 mm) tanks that were installed on the roof of the locomotive, above the prime mover. These “torpedo tubes” as they were nicknamed, enabled the fuel and water tanks to be increased to 1,100 US gallons (4,200 l; 920 imp gal) each, although some railroads opted for roof-mounted air tanks and 2,200 US gallons (8,300 l; 1,800 imp gal) fuel tanks on their freight ‘Geeps’.
From Wikipedia
Road Name History: 
The Norfolk and Western Railway (reporting mark NW), was a US class I railroad, formed by more than 200 railroad mergers between 1838 and 1982. It was headquartered in Roanoke, Virginia, for most of its 150-year existence. Its motto was "Precision Transportation"; it had a variety of nicknames, including "King Coal" and "British Railway of America" even though the N&W had mostly articulated steam on its roster. During the Civil War, the N&W was the biggest railroad in the south and moved most of the products with their steam locomotives to help the South the best way they could.
NW was famous for manufacturing its own steam locomotives, which were produced at the Roanoke Shops, as well as its own hopper cars. Around 1960, NW became the last major American railroad to convert from steam locomotives to diesel motive power but didn't retire its last remaining Y class locomotives until 1964 and 1965. By 1965, steam on class I railroads was gone but steam wasn't gone on class II railroads until 1974 and class III and mining railroads retired their steam locomotives from their active roster until 1983. By 1983, steam in America on class I, II, III, and mining railroads had finally closed the chapter on America's 150 years of steam from 1830 - 1983.
In December 1959, NW merged with the Virginian Railway (reporting mark VGN), a longtime rival in the Pocahontas coal region. By 1970, other mergers with the Nickel Plate Road and Wabash formed a system that operated 7,595 miles (12,223 km) of road on 14,881 miles (23,949 km) of track from North Carolina to New York and from Virginia to Iowa.
In 1980, NW teamed up with the Southern Railway, another profitable carrier and created the Norfolk Southern Corporation holding company by merging its business operations with the business operations of the Southern Railway. The NW and the Southern Railway continued as separate railroads now under one holding company.
On December 31, 1990, the Southern Railway was renamed "Norfolk Southern Railway" to reflect the Norfolk Southern Corporation and on the same day, the renamed Norfolk Southern Railway gained full control of the Norfolk and Western Railway with the Norfolk and Western being transferred from the holding company to the renamed Norfolk Southern Railway, this began the final years of Norfolk and Western which was absorbed into the renamed Norfolk Southern Railway seven years later in 1997 (1990 to 1997 the Norfolk and Western continued operating by using paper operations).
In 1997 during the Conrail battle with CSX, Norfolk Southern Corporation's principal railroad, the renamed Norfolk Southern Railway, absorbed the Norfolk and Western Railway into their rail system, ending the existence of the Norfolk and Western Railway and having the renamed Norfolk Southern Railway becoming the only railroad in the entire Norfolk Southern system after that.
NW was famous for manufacturing its own steam locomotives, which were produced at the Roanoke Shops, as well as its own hopper cars. Around 1960, NW became the last major American railroad to convert from steam locomotives to diesel motive power but didn't retire its last remaining Y class locomotives until 1964 and 1965. By 1965, steam on class I railroads was gone but steam wasn't gone on class II railroads until 1974 and class III and mining railroads retired their steam locomotives from their active roster until 1983. By 1983, steam in America on class I, II, III, and mining railroads had finally closed the chapter on America's 150 years of steam from 1830 - 1983.
In December 1959, NW merged with the Virginian Railway (reporting mark VGN), a longtime rival in the Pocahontas coal region. By 1970, other mergers with the Nickel Plate Road and Wabash formed a system that operated 7,595 miles (12,223 km) of road on 14,881 miles (23,949 km) of track from North Carolina to New York and from Virginia to Iowa.
In 1980, NW teamed up with the Southern Railway, another profitable carrier and created the Norfolk Southern Corporation holding company by merging its business operations with the business operations of the Southern Railway. The NW and the Southern Railway continued as separate railroads now under one holding company.
On December 31, 1990, the Southern Railway was renamed "Norfolk Southern Railway" to reflect the Norfolk Southern Corporation and on the same day, the renamed Norfolk Southern Railway gained full control of the Norfolk and Western Railway with the Norfolk and Western being transferred from the holding company to the renamed Norfolk Southern Railway, this began the final years of Norfolk and Western which was absorbed into the renamed Norfolk Southern Railway seven years later in 1997 (1990 to 1997 the Norfolk and Western continued operating by using paper operations).
In 1997 during the Conrail battle with CSX, Norfolk Southern Corporation's principal railroad, the renamed Norfolk Southern Railway, absorbed the Norfolk and Western Railway into their rail system, ending the existence of the Norfolk and Western Railway and having the renamed Norfolk Southern Railway becoming the only railroad in the entire Norfolk Southern system after that.
Brand/Importer Information: 
In 1924 Stephan Schaffan, Sr. founded the Atlas Tool Company in Newark, New Jersey. In 1933 his son, Stephan Schaffan, Jr., came to work for his father at the age of sixteen. Steve Jr. built model airplanes as a hobby and frequented a local hobby shop. Being an enterprising young man, he would often ask the owner if there was anything he could do to earn some extra spending money. Tired of listening to his requests, the hobby-store owner threw some model railroad track parts his way and said, "Here, see if you can improve on this".
In those days, railroad modelers had to assemble and build everything from scratch. Steve Jr. created a "switch kit" which sold so well, that the entire family worked on them in the basement at night, while doing business as usual in the machine shop during the day.
Subsequently, Steve Jr. engineered the stapling of rail to fiber track, along with inventing the first practical rail joiner and pre-assembled turnouts and flexible track. All of these products, and more, helped to popularize model railroading and assisted in the creation of a mass-market hobby. The budding entrepreneur quickly outgrew the limitations of a basement and small garage operation. Realizing they could actually make a living selling track and related products, Steve and his father had the first factory built in Hillside, New Jersey at 413 Florence Avenue in 1947. On September 30, 1949, the Atlas Tool Company was officially incorporated as a New Jersey company.
In 1985, Steve was honored posthumously for his inventions by the Model Railroad Industry Association and was inducted into the Model Railroad Industry Hall of Fame in Baltimore, Maryland. In addition, Steve was nominated and entered into the National Model Railroad Association Pioneers of Model Railroading in 1995.
In the early 1990s, the Atlas Tool Company changed its name to Atlas Model Railroad Company, Inc.
In those days, railroad modelers had to assemble and build everything from scratch. Steve Jr. created a "switch kit" which sold so well, that the entire family worked on them in the basement at night, while doing business as usual in the machine shop during the day.
Subsequently, Steve Jr. engineered the stapling of rail to fiber track, along with inventing the first practical rail joiner and pre-assembled turnouts and flexible track. All of these products, and more, helped to popularize model railroading and assisted in the creation of a mass-market hobby. The budding entrepreneur quickly outgrew the limitations of a basement and small garage operation. Realizing they could actually make a living selling track and related products, Steve and his father had the first factory built in Hillside, New Jersey at 413 Florence Avenue in 1947. On September 30, 1949, the Atlas Tool Company was officially incorporated as a New Jersey company.
In 1985, Steve was honored posthumously for his inventions by the Model Railroad Industry Association and was inducted into the Model Railroad Industry Hall of Fame in Baltimore, Maryland. In addition, Steve was nominated and entered into the National Model Railroad Association Pioneers of Model Railroading in 1995.
In the early 1990s, the Atlas Tool Company changed its name to Atlas Model Railroad Company, Inc.
Item created by: gdm on 2015-12-02 17:12:12. Last edited by Powderman on 2022-02-15 10:21:24
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