PRR FF2

The Pennsylvania Railroad's class FF2 was a group of American electric locomotives which comprised eight boxcab units, purchased from the Great Northern Railway in 1956 following the GN's dismantling of its Cascade Tunnel electrification. They had been built by the American Locomotive Company and General Electric between 1927 and 1930. Their GN classifications had been Y-1, and numbered 5010–5017. The GN had rebuilt the 5011 in 1951 with EMD FT cabs and a streamlined appearance, and reclassified it Y-1a. This unit was dismantled for spares by the Pennsylvania Railroad, and the remaining seven were overhauled and converted to PRR standards and then placed into service, being assigned #1–#7 on the PRR. They were all scrapped between 1960 and 1966.

They were of 2-6-6-2 wheel arrangement in the Whyte notation, or 1-C+C-1 in the Association of American Railroads scheme. They used motor-generator sets to rectify the alternating current line voltage into direct current for their traction motors.

References

• Staufer, Alvin (1962). Pennsy Power. Staufer. pp. 248–253. LOC 62-20878. 
• Pennsylvania Railroad. "FF2". PRR Locomotive Diagrams. http://prr.railfan.net/diagrams/PRRdiagrams.html?diag=ff2.gif&sel=ele&sz=sm&fr=. Retrieved 2006-01-05.  (simple drawing and specifications, for general reference by railroad staff).
• 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.