|Great Northern Railway Y-1
Pennsylvania Railroad FF2
A GN Y-1 locomotive in 1927
|Type and origin|
|Build date||1927 (2), 1928 (2), 1930 (4)|
|AAR wheel arr.||1-C+C-1|
|Weight on drivers||c. 410,000 lb (186.0 t)|
|Locomotive weight||5010–5011: 518,250 lb (235.1 t)
5012–5017: 527,200 lb (239.1 t)
|Electric system(s)||11 kV AC, 25 Hz overhead|
|Transmission||Motor–generator supplied direct current fed to 6 traction motors.|
|Power output||3,000 hp (2.24 MW) (continuous)
3,300 hp (2.46 MW) (one hour)
|Scrapped||1957 (1), 1960 (1), 1962 (1), 1966 (5)|
The Great Northern Railway's class Y-1 comprised eight electric locomotives with AAR 1-C+C-1 wheel arrangements. The locomotives were used on the 73-mile (117 km) electrified portion of the railroad, from Wenatchee, Washington to Skykomish, Washington, including the Cascade Tunnel.
The 3,000 horsepower (2.2 MW) locomotives were built at Schenectady, New York, with car bodies manufactured by American Locomotive Company and electrical components supplied by General Electric. They used motor-generator sets to rectify the alternating current line voltage into direct current for their traction motors.
The GN numbered the units 5010–5017 and classified them Y-1. After being involved in a wreck at Tonga, Washington in July 1945, the 5011 was rebuilt with a streamlined appearance and EMD F-unit cabs; the GN reclassified it as Y-1a.
In 1956, the GN dieselized operations through the Cascade Tunnel. The electrical system was decommissioned, and the Y-1 locomotives were sold to the Pennsylvania Railroad, who classified them as FF2. GN 5011 was broken up for spares, and the remaining seven locomotives were overhauled and converted to PRR standards and then placed into service, being assigned numbers 1–7 on the PRR. The lasted a few more years on the PRR, and were all scrapped between 1957 and 1966.
|ALCO serial||GE serial||Build date||GN No.||PRR No.||Scrap date|
- Keyes, Norman C, Jr.; Middleton, Kenneth R. (Autumn 1980). "The Great Northern Railway Company: All-Time Locomotive Roster, 1861–1970". Railroad History (Boston, MA: The Railway and Locomotive Historical Society, Inc.) (143): 117. ISSN 0090-7847.
- Pennsylvania Railroad. "FF2". PRR Locomotive Diagrams. Retrieved 2006-01-05. (simple drawing and specifications, for general reference by railroad staff).
- Staufer, Alvin (1962). Pennsy Power. Staufer. pp. 248–253. LOC 62-20878.