As has often been mentioned in these pages, the Southern Pacific spent millions and millions of dollars to improve
the diesel locomotive-frequently signing orders sight-unseen for "the next big thing" in locomotive technology. SP was a vital force in the revolutionary events of the 1960s and 1970s, often engaging in shouting matches with the locomotive builders, but then ordering hundreds of new locomotives. The industry listened to the Southern Pacific.
For instance, the idea for "tunnel motor" radiators did not arrive in a flash. Engineers had long known that lower air intakes delivered cooler air to the radiators: in the 1940s and 1950s, Baldwin roadswitchers were built with low-level air intakes; General Electric adopted a similar airflow plan for its U-series locomotives. SP had to modify its first hydraulic-drive diesels after realizing that even these exotic machines were suffering engine damage from hot air ingested at roof level in tunnels and snowsheds.
All pictures are of the actual item. If this is a railroad item, this material is obsolete and no longer in use by the railroad. Please email with questions. Publishers of Train Shed Cyclopedias and Stephans Railroad Directories. Large inventory of railroad books and magazines. Thank you for buying from us.
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