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Southern Pacific class GS-4 - Wikipedia, the free encyclopedia

Southern Pacific class GS-4

From Wikipedia, the free encyclopedia

SP GS-4
SP GS-4
SP4449 standing idle under steam, waiting to start Christmas excursion, December 13, 2005.
Power type Steam
Builder Lima Locomotive Works
Serial number 7798 – 7817, 7848 – 7855
Build date April-May 1941, March-April 1942
Configuration 4-8-4
Gauge ft 8½ in (1435 mm)
Driver size 80 inch diameter
Weight on drivers 275,700 lb
Total weight 475,000 lb
Boiler pressure 300 psi
Cylinder size 25½ in dia × 32 in stroke
Career Southern Pacific Railroad
Class GS-4
Number in class 28
Number 4430 – 4457
First run April 1941
Retired 1958
Disposition all but one scrapped, 4449 restored

The GS-4 is a streamlined 4-8-4 Northern type steam locomotive that served the Southern Pacific Railroad from 1941 to 1958. They were built by the Lima Locomotive Works and were numbered 4430 through 4457. GS stands for "Golden State" or "General Service."

The GS-4 had a slightly different appearance than that of the GS-3, most drasticaly the dual-headlight casing (top headlight was a mars light) on the silver smokebox. Another change in appearance was the cab, which was changed to a fully-enclosed, all-weather cab, a feature not commonly found on steam engines. It retaned the skyline casing on the top of the boiler, skirting on the sides, an air horn, teardrop classification lights, and whistles. They received the orange and red "Daylight" paint scheme.

The GS-4s were designed for high-speed passenger service and were used on Southern Pacific's premier passenger trains, the Coast Daylight, San Joaquin Daylight and Sunset Limited, as well as many other Southern Pacific name trains. In later years they were painted black and had their side skirting removed for easier maintenance, and were re-assigned to the San Jose-San Francisco commute trains, freight service, and the occasional San Joaquin Daylight until new diesels arrived and they were retired.

GS-4 number 4443 pulled one of the final movements of steam on the Southern Pacific Railroad in 1957.

[edit] Preservation

One GS-4 survives today, Southern Pacific 4449, arguably the most popular and most photographed locomotive of all time. 4449 was donated to Oaks Park in Portland, Oregon, in 1958. In December 1974, 4449 was moved from Oaks Park to undergo restoration. From August 1975 to December 1976, 4449 shared duties with several other steam locomotives pulling the American Freedom Train throughout the U.S. 4449 is still operational and currently resides at the Brooklyn Roundhouse in Portland along with many other preserved locomotives and rolling stock.

[edit] References

  • Diebert, Timothy S. and Strapac, Joseph A. (1987). Southern Pacific Company Steam Locomotive Conpendium. Shade Tree Books. ISBN 0-930742-12-5.
  • The American Freedom Train Foundation (1975). The American Freedom Train Official Commemorative Program 1975 / 1976. The American Freedom Train Foundation.

[edit] External links

GS-class steam locomotives of Southern Pacific Railroad
Classes: GS-1 · GS-2 · GS-3 · GS-4 · GS-5 · GS-6
Preserved: SP 4449 · SP 4460

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