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The boiler for the S1 was the largest built by the Pennsylvania Railroad; with 660 square feet (61 m 2) of direct heating surface and 500 one-inch diameter tubes, the total heating surface area of S1 was 7,746 square feet (719.6 m 2); it was 99.3% as massive as the boiler for Union Pacific's 4000-class "Big Boy" locomotives. In terms of drawbar ...
Swiss classification: 2/5+2/5 up to the early 1920s, later 4/10 Only one was produced, the Pennsylvania Railroad 's sole class S1 of 1939. It was a duplex locomotive , the longest and heaviest rigid frame reciprocating steam locomotive ever built and is referred to as the Pennsylvania Type .
PRR S1: Pennsylvania Railroad: 6100 Altoona Works: 1939 Steam 6-4-4-6: 487 tonnes (537 short tons) 76,403 pounds-force (340 kN) 7,200 horsepower (5,369 kW) Fast passenger steam locomotive; the magazine Popular Mechanics cites 1941 a speed of 133.4 mph (214.7 km/h) PRR S2: Pennsylvania Railroad: 6200 Baldwin Locomotive Works: 1944 Steam turbine ...
The PRR also desired to apply the duplex principle to freight haulage, and the Q1 was the first experiment in that direction. It was a 4-6-4-4 fast freight locomotive, delivered in May 1942. Like the B&O's George H. Emerson it had the second pair of cylinders facing backwards, and all were fitted with standard Walschaerts valve gear.
The Duplex and Experimental Steam Engines of the PRR; Pennsylvania Railroad S2 steam turbine "Modern Power For Today's Trains" - A promotional booklet put out by the PRR in 1949 showcasing the railroads latest motive power. Archived 2017-12-14 at the Wayback Machine "The Keystone" Magazine - Autumn 2012 Volume 45 - Number 3 - The S2 Turbine 686
These were both withdrawn from service by the mid-1920s. In 1942, the PRR built 123 2-10-4 "Texas" type locomotives based on C&O plans; class J now being unoccupied, it was reused for them. The PRR J1 was an improved version of its C&O counterpart with more pulling power. J1 - 2-10-4 freight locomotives. J28 - experimental 2-6-2 locomotives.
PRR FF1 experimental locomotive PRR GG1 #4890 at the National Railroad Museum in Green Bay, Wisconsin. When work on the Hudson River tunnels and New York's Penn Station was in progress, the type of electric locomotives to be used was an important consideration. At that time only a few electric locomotives existed.
PRR FF2; G. Pennsylvania Railroad class G3; ... Pennsylvania Railroad class S1; ... This page was last edited on 2 January 2014, ...