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Last updated 2009-05-31
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Trainiax > Drawings > Locomotive Phases
Trainiax > Info > Locomotive Phases
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Locomotive Phases

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Phases refer to incremental changes or improvements over a the production of a locomotive model.  They often indicate minor cosmetic differences and are thus rarely, if ever, used by railroads and builders.  They are not official model designations.

Where possible, I've based phase information off existing, well-known phase descriptions.  In other cases, I've created my own phase distinctions reflecting the differences I've noticed when making drawings of the models in question.

By model
EMD SW1500
EMD GP7, GP9
EMD GP38, GP40
EMD GP40-2
EMD SD70M
EMD SD70ACe

By category
These are my older phase descriptions.  Listings in these sections will be removed as sections are created for individual models (above).

4-axle EMD Locomotives
6-axle EMD Locomotives
4-axle GE Locomotives
6-axle GE Locomotives
6-axle ALCO Locomotives

References

"Diesel Locomotive Rosters."  http://users.inna.net/~jaydeet/rosters.htm

"Locodata - The Locomotive Data Website." http://locodata.info/

"The UNofficial EMD Homepage." http://www.trainweb.org/emdloco/
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Michael Eby 2009