SP&S Class O-2

Spokane, Portland & Seattle Railway O-2 class

Type and origin
Power type	Steam
Builder	Schenectady Locomotive Works
Serial number	46878
Build date	February 1910

Specifications
Configuration	2-8-2
Gauge	4 ft 8 ¹⁄₂ in (1,435 mm)
Driver dia.	63 in (1.600 m)
Adhesive weight	207,000 lb (94 t)
Loco weight	265,000 lb (120 t)
Fuel type	Oil
Boiler pressure	200 psi (1.38 MPa)
Cylinders	Two
Cylinder size	25 inches

Performance figures
Tractive effort	50,600 lbf (225.1 kN)

Career
Operators	Spokane, Portland and Seattle Railway
Class	O-2
Locale	United States

On the American Spokane, Portland and Seattle Railway, locomotive number 525 was the only steam locomotive in SP&S class O-2. It was originally built for Northern Pacific by the Schenectady Locomotive Works. Builders number 46878 was built in February 1910.

Background

In the early 1920s the SP&S had experienced an increase in traffic, especially logging traffic off the Portland, Astoria and Pacific and United Railways west of Portland, Oregon. To help handle this tonnage, several locomotives were leased from the Great Northern Railway and Northern Pacific Railway. To offset these costs, several of these locomotives were sold by the parent roads to the SP&S. Number 525 was one of these locomotives.

Operational history

Number 525 was officially bought by the SP&S on November 30, 1925. It was used on the mainline because it was able to haul heavier eastbound trains upgrade out of Pasco, Washington. Over time, as newer locomotives were obtained by the SP&S, number 525 was demoted to local or work service, or used on doubleheaded mainline trains. By late 1942 and early 1943, 525 was assigned to the Vancouver, Washington, yard as a switch locomotive.^[1] Number 525 was finally scrapped in 1947.

Numbering

SP&S number 525 was originally NP number 1698, in class W-1.

Disposition

SP&S Number 525 was dismantled on October 31, 1947.

References

↑ The Northwest's own Railway, 1998 Numbers 3 and 4. The Spokane Portland and Seattle Railway Historical Society. 1998. p. 9.

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 (700)

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

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