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Atlas - 50803 - Locomotive, Diesel, EMD GP7 - Chicago Great Western - 121

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N Scale - Atlas - 50803 - Locomotive, Diesel, EMD GP7 - Chicago Great Western - 121
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Stock Number50803
Original Retail Price$129.95
BrandAtlas
ManufacturerAtlas
Body StyleAtlas Diesel Engine GP7
Prototype VehicleLocomotive, Diesel, EMD GP7 (Details)
Road or Company NameChicago Great Western (Details)
Reporting MarksCGW
Road or Reporting Number121
Paint Color(s)Maroon/Red/Yellow
DCC ReadinessDC/DCC Dual Mode Decoder
Release Date2006-09-01
Item CategoryLocomotives
Model TypeDiesel
Model SubtypeEMD
Model VarietyGP7
Prototype RegionNorth America
Prototype EraNA Era III: Transition (1939 - 1957)
Scale1/160



Model Information: The Atlas GP7, GP9 and GP9-TT models are some of their oldest models. The models 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.

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 third version came out in 1995 and was made in China for Atlas and these engines were essentially a redo of the Kato mechanism. Finally, in 2006, a completely new mechanism was introduced and this 4th version is a split frame, dual-flywheel, slow-motor, modern engine. Furthermore, with the more recent releases, most road-names and numbers are available in both a DCC-Ready and a Decoder-Equipped version.

Assembly instructions from Atlas: GP7 (Japan version), GP7 Ph.1 (China version), GP7 Ph.2 (China version).
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
Prototype History:
The EMD GP7 is a four-axle (B-B) road switcher diesel-electric locomotive built by General Motors Electro-Motive Division and General Motors Diesel between October 1949 and May 1954. Power was provided by an EMD 567B 16-cylinder engine which generated 1,500 horsepower (1,119 kW). The GP7 was offered both with and without control cabs, and those built without control cabs were called a GP7B. Five GP7B's were built between March and April 1953. The GP7 was the first EMD road locomotive to use a hood unit design instead of a car-body design. This proved to be more efficient than the car body design as the hood unit cost less to build, was cheaper and easier to maintain, and had much better front and rear visibility for switching.

Of the 2,734 GP7's built, 2,620 were for American railroads (including 5 GP7B units built for the Atchison, Topeka and Santa Fe Railway), 112 were built for Canadian railroads, and 2 were built for Mexican railroads. This was the first model in EMD's GP (General Purpose) series of locomotives. Concurrently, EMD offered a six-axle (C-C) SD (Special Duty) locomotive, the SD7.

From Wikipedia
Road Name History:
Chicago Great Western was the result of the 1892 reorganization of the Chicago St. Paul & Kansas City. By 1903, the CGW had grown to its maximum size. The CGW had a vaguely cross-shaped system map. The east-west leg started in Chicago and linked Dubuque, Fort Dodge (both in Iowa) and finally Omaha, Nebraska. The north-south line started in St. Paul, Minnesota and linked Waterloo and Des Moines, Iowa then St. Joseph and Kansas City, Missouri. Each axis consisted of a big arc which put CGW at a distance disadvantage to most other railroads servicing the same region – and there were a lot of railroads in the area.

Passenger service was never a major priority and many trains consisted of doodlebugs and trailers even before World War One. In the 1920s CGW did team up with Santa Fe to run through sleepers from the Twin Cities to Los Angeles.

Big mainline power in the 30s and 40s consisted of a fleet of 3 dozen 2-10-4s. In 1936, CGW launched piggyback service – one of the first in the nation. One piggyback customer was a truck line specializing in hauling steel. Since CGW charged by the trailer, the truck line would take the contents of 3 trailers which had maxed out on highway weight and reload all the steel into a single catastrophically heavy trailer that would ride the flat car. They didn’t tell CGW though. No one was the wiser until the landing gear on a trailer punched through the deck of the flat car and derailed a train at speed!

By 1950, CGW had completely dieselized with a mix of Alco, Baldwin and EMD switchers, Alco and EMD road switchers (the former running long hood forward and the latter equipped with dual controls,) and a sizable fleet of EMD F units. By this time, the Deramus family (who already controlled the Kansas City Southern) had gained control of the CGW. Over the years, they cut costs and services. CGW began holding trains until they reached maximum tonnage. Trains between 150 and 250 cars were a daily occurrance behind A-B-B-B-B-A sets of F units. What’s more, these monsters would stop and switch along the way!

Around 1951, they dropped “The Corn Belt Route” logo in favor of the Lucky Strike style logo. The first generation of diesels were delivered in ornate maroon, and red with yellow striping. This was replaced with a simplified solid maroon and then red with black roof (which was essentially the same as neighbor and fellow Deramus controlled Kansas City Southern.) The second generation of diesels consisted entirely of GP30’s and SD40’s.

Despite the iffy service and tremendous competition in the area, and thanks to the cost cutting and a dearth of money losing passenger operations that plagued their neighbors, CGW steadily made money through the 50s and 60s. But, in the age of mergers, it was clear they couldn’t make it on their own. CGW discussed merger with every possible connection but ultimately merged into Chicago & North Western in 1968. In their last full year, the CGW was a 1,411 mile line with 139 locomotives (for comparison, they were about the same size as Western Pacific.)
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.
Item created by: Powderman on 2021-12-10 17:14:52. Last edited by Powderman on 2021-12-10 17:14:53

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