SP&S Class A1

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Contents 1 SP&S Class A-1 Switch Locomotives 1.1 Background 1.2 Design Features 1.3 Construction History 1.4 Operational History 1.5 Numbering 1.6 Disposition 1.7 Footnotes 1.8 References 1.9 Further Reading 1.10 See Also 1.11 External Links

[edit] SP&S Class A-1 Switch Locomotives

The SP&S Class A-1 steam locomotives were a group of 5 identical locomotives. They were used in the rail yards at Portland OR and Vancouver WA from 1907 to 1952. They were replaced with Diesel-Electric switch locomotives.

A-1^[1]

Power type	Steam
Builder	Manchester Locomotive Works
Build date	July , 1907
Configuration	0-6-0
Gauge	4 ft 8½ in (1,435 mm)
Driver size	51 in (1.30 m)
Locomotive weight	150,000 Lbs (68 Metric Tonnes)
Fuel type	Oil
Boiler pressure	180 lbf/in² (1,723 kPa)
Cylinders	2
Cylinder size	20x26 Inches
Tractive effort	31,200 lbf
Career	Spokane Portland and Seattle Ry
Class	A-1
Locale	United States

[edit] Background

In 1907, the new SP&S needed equipment for regular operations. Company officials wanted 25 freight locomotives and two switch locomotives to start with. ^[2]. The president of the Great Northern Ry advised SP&S officials that his railroad could contribute excess engines.^[3] Because of this, only five switch locomotives were purchased for use in the terminal yards in Portland and Vancouver.^[4]

[edit] Design Features

[edit] Construction History

All five locomotives in Class A-1 were built by the Manchester plant of American Locomotive Works. Because of the availability of spare parts from the Northern Pacific in Portland OR and Pasco and Vancouver WA^[5] these locomotives were identical to Northern Pacific class L-9 switch locomotives.^[6]

[edit] Operational History

All five locomotives were delivered to the SP&S in February of 1908^[7]. They were initially used in work service completing the North Bank line from Portland to Spokane.^[8] Upon completion of the main line, these locomotives were transferred to the terminals for switching service. In late 1942 and Early 1943 all 5 locomotives were assigned to the Portland Terminal yards as switch locomotives.^[9] In 1946 locomotive number 2 was sold to the City of Prineville Railway.^[10] With the arrival of SW-9 switch engines 43-45 in 1951 ^[11] the remaining A-1 class steamers were retired in 1952.

[edit] Numbering

These locomotives were numbered 1 to 5

[edit] Disposition

Locomotive number 1 was scrapped April 25, 1952. Locomotive number 2 was sold to the City of Prineville Railway and renumbered as their number 7 July 31, 1946. Locomotive number 3 was scrapped January 24, 1952. Locomotive number 4 was scrapped April 25, 1951. Locomotive number 5 was scrapped January 24, 1952.^[12]

[edit] Footnotes

[edit] References

[edit] Further Reading

[edit] See Also

[edit] External Links

v • d • e Spokane Portland and Seattle Railway Locomotives Steam Locomotives 0-8-0: Class A1 · Class A2 · Class A3 4-4-0: Class L-1 · Class L-2 · Class L-3 · Class L-4 · Class L-5 4-6-0: Class D-1 · Class D-2 · Class D-3 · Class D-4 · Class D-5 · Class D-6 · Class D-7 2-6-0 : Class M-1 · Class M-2 2-8-0: Class N-1 · Class N-2 · Class N-3 · Class N-4 · Class N-5 · Class N-6 · Class N-7 2-6-2: Class F-1 2-8-2: Class O-1 · Class O-2 · Class O-3 · Class O-4 4-4-2: Class C-1 4-6-2: Class H-1 4-8-4: Class E-1 4-6-6-4: Class Z-6 · Class Z-8 Diesel Locomotives Alco: Alco S-1 · Alco S-2 · Alco RS-1 · Alco RS-2 · Alco RS-3 · Alco C-415 · Alco C-424 · Alco C-425 · Alco C-636 · Alco FA-1 · Alco FB-1 · Alco FA-2 · Alco FB-2 EMD: EMD NW-2 · EMD SW-9 · EMD GP-9 · EMD E-7A · EMD F-3A · EMD F-7A Baldwin: BLW VO-1000 ·

(Cat:Locomotive stubs)