PRR FF1

PRR FF1

The Pennsylvania Railroad's class FF1 of electric locomotive comprised a single prototype, numbered #3931 and nicknamed "Big Liz" by its crews. It was built in 1917 for the task of hauling freight trains across the Allegheny Mountains, which the PRR planned to electrify; this was never accomplished. In testing, "Big Liz" proved workable but simply too powerful for the freight cars of the time. On the front of the train, it regularly snapped couplers, while when used as a pusher on the rear its force was sufficient to destroy the cars it pushed.

It had a 1-C+C-1 wheel arrangement and consisted of two half-frames, articulated together in the center. Each frame mounted a pair of synchronous motors driving a jackshaft through gearing and a spring drive; side rods then drove the wheels.

Specifications

References

* cite book
author = Staufer, Alvin
title = Pennsy Power
id = LOC 62-20878
year = 1962
publisher = Staufer
pages = 248–253
* cite journal
author = Pennsylvania Railroad
journal = Railway Mechanical Engineer
title = Pennsylvania Electric Locomotive - Experimental Design for Heavy Trunk Line Service to Operate Over 24 Miles of One Per Cent Grade
volume = 91
issue = 7
year = 1917
month = July
pages = 389–390
url = http://prr.railfan.net/documents/pdf/PRRElectricLocomotive_1917_RME_389-390_DennisShort.pdf
* cite journal
author = Pennsylvania Railroad
journal = Railway Mechanical Engineer
title = Pennsylvania Electric Locomotive - A Description of Interesting Details in the Running Gear Construction and in the Electrical Equipment
volume = 92
issue = 2
year = 1918
month = February
pages = 87–90
url = http://prr.railfan.net/documents/pdf/Pennsylvania_Electric_Locomotive_1918_RME_DennisShort.pdf


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