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Model Information: The model was introduced in 1990 and the early releases were made by Kato Japan for Atlas. From 2004 on, the models were made in China and the internals were modified to a more modern mechanism. The Atlas SD7, SD9, SD24 and SD26 all share the same internal mechanism and differ only in their shell details. The modern releases fall under the "Classic" label for the SD7 and SD9 models and "Master" label for the SD24 and SD 26.
The early releases featured the Kato-designed "low friction drive" which had been successfully introduced in their Kato-branded U30C model). This design allowed clean transfer of current from wheels to long copper strips to the chassis and then to the lightboard. This may not sound innovative, as many modern mechanisms use this design today, but in 1990 it was a game-changer. The post-2004 releases are fairly standard "modern" mechanisms featuring a split-frame, dual-flywheels, and magnetic operating knuckle couplers. They run quiet and smooth and can pull 30 or more standard-weight cars.
The early releases featured the Kato-designed "low friction drive" which had been successfully introduced in their Kato-branded U30C model). This design allowed clean transfer of current from wheels to long copper strips to the chassis and then to the lightboard. This may not sound innovative, as many modern mechanisms use this design today, but in 1990 it was a game-changer. The post-2004 releases are fairly standard "modern" mechanisms featuring a split-frame, dual-flywheels, and magnetic operating knuckle couplers. They run quiet and smooth and can pull 30 or more standard-weight cars.
DCC Information: Models produced from 2006 are DCC Ready or Dual-Model Decoder Equipped. They accept the following drop-in decoders:
- Digitrax DN163A0: 1 Amp N Scale Mobile Decoder for Atlas N-Scale GP40-2, U25B, SD35, Trainmaster, B23-7 and others
- TCS AMD4 (Installation for Atlas SD-9)
- NCE N12A0: Plug and play decoder for N-Scale Atlas GP40-2, U25B, U23B, B23-7, 30-7, 36-7, GP38, SD25, TRAINMASTER, etc.
- MRC 1812: N-Scale Sound Decoder for most Atlas short/medium locos (selection of 4 prime movers - might not be prototypical for this model however)
Earlier DCC factory-equipped versions were fitted with Lenz LE063XF decoders, whereas most recent versions are fitted with NCE N12A0 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.
- Digitrax DN163A0: 1 Amp N Scale Mobile Decoder for Atlas N-Scale GP40-2, U25B, SD35, Trainmaster, B23-7 and others
- TCS AMD4 (Installation for Atlas SD-9)
- NCE N12A0: Plug and play decoder for N-Scale Atlas GP40-2, U25B, U23B, B23-7, 30-7, 36-7, GP38, SD25, TRAINMASTER, etc.
- MRC 1812: N-Scale Sound Decoder for most Atlas short/medium locos (selection of 4 prime movers - might not be prototypical for this model however)
Earlier DCC factory-equipped versions were fitted with Lenz LE063XF decoders, whereas most recent versions are fitted with NCE N12A0 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.
Prototype History: 
An SD9 is a 6-axle diesel locomotive built by General Motors Electro-Motive Division between January 1954 and June 1959. An EMD 567C 16-cylinder engine generated 1,750 horsepower (1.30 MW). This model is, externally, similar to its predecessor, the SD7, but this model, internally, features the improved and much more maintainable 567C engine. The principal spotting feature are the classification lights on the ends of the locomotive, above the number board. The SD9's classification lights are on a small pod, canted outward. The last phase of construction had a carbody similar to the SD18 and SD24, and used two 48-inch (1,219 mm) cooling fans instead of four 36-inch (914 mm) cooling fans.
Four hundred and seventy-one SD9s were built for American railroads and 44 for export.
Read more on Wikipedia.
Full EMD SD9 data sheet on The Diesel Workshop.
Four hundred and seventy-one SD9s were built for American railroads and 44 for export.
Read more on Wikipedia.
Full EMD SD9 data sheet on The Diesel Workshop.
Road Name History: 
The EJ&E dates from 1888. For most of its history, it was owned by US Steel whose Gary Works is near the east end of the line. Another company owns the mill now.
The EJ&E traces a wide arc around the Chicago area between 30 and 40 miles from the city center from Waukegan on the north, around Walker and Joliet, then east as far as Porter, Indiana. Because of this, the EJ&E was known for years as “The Chicago Outer Belt.” It also had the nickname, “The J”.
EJ&E’s two biggest missions have been moving steel and acting as a transfer road for all of Chicago’s Class 1’s and shortlines. As a result, the line was heavily trafficked with 100 locomotives required to serve just 230 route miles. In addition, EJ&E had over 10,000 freight cars, a huge fleet for a line that size.
In the early diesel days, EJ&E stuck mostly with Baldwin and EMD with a few Alco RS2’s thrown in. The J had more Baldwin center cab transfer engines (DT 6-6-2000) than anyone else, in fact more than just about everyone else combined. Ballasted EMD SD7’s painted in green over orange were also used in transfer service. EMD NW2’s were the primary switchers. In 1970, the Baldwins were replaced by EMD SD38-2’s, delivered with dual controls to they could just as easily run long hood forward. By that time, EJ&E had gone to solid orange with silver trucks and fuel tanks with various striping and logo placement variations over the years. They would also toy with gold and yellow and green and yellow schemes.
In 2009 the Elgin Joliet & Eastern was acquired by Canadian National in order to link their former Wisconsin Central, Illinois Central, Chicago Central & Pacific, and Grand Trunk Western lines. These lines approached the city from different directions and had required trackage rights and terminal roads to reach each other so acquiring the EJ&E was a logical move.
The EJ&E traces a wide arc around the Chicago area between 30 and 40 miles from the city center from Waukegan on the north, around Walker and Joliet, then east as far as Porter, Indiana. Because of this, the EJ&E was known for years as “The Chicago Outer Belt.” It also had the nickname, “The J”.
EJ&E’s two biggest missions have been moving steel and acting as a transfer road for all of Chicago’s Class 1’s and shortlines. As a result, the line was heavily trafficked with 100 locomotives required to serve just 230 route miles. In addition, EJ&E had over 10,000 freight cars, a huge fleet for a line that size.
In the early diesel days, EJ&E stuck mostly with Baldwin and EMD with a few Alco RS2’s thrown in. The J had more Baldwin center cab transfer engines (DT 6-6-2000) than anyone else, in fact more than just about everyone else combined. Ballasted EMD SD7’s painted in green over orange were also used in transfer service. EMD NW2’s were the primary switchers. In 1970, the Baldwins were replaced by EMD SD38-2’s, delivered with dual controls to they could just as easily run long hood forward. By that time, EJ&E had gone to solid orange with silver trucks and fuel tanks with various striping and logo placement variations over the years. They would also toy with gold and yellow and green and yellow schemes.
In 2009 the Elgin Joliet & Eastern was acquired by Canadian National in order to link their former Wisconsin Central, Illinois Central, Chicago Central & Pacific, and Grand Trunk Western lines. These lines approached the city from different directions and had required trackage rights and terminal roads to reach each other so acquiring the EJ&E was a logical move.
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 2017-02-23 19:39:18. Last edited by gdm on 2020-07-24 07:28:55
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