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Signals: 1920

"Union Station tracks, Washington, circa 1920." National Photo Company Collection glass negative. View full size.

"Union Station tracks, Washington, circa 1920." National Photo Company Collection glass negative. View full size.

 

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E6s indeed ...

... the size of the boiler and the delta trailing truck gives it away.

The prototype, #5075, was built by the Pennsylvania Railroad at its Altoona shops in 1910. This locomotive was unsuperheated (class E6). Two superheated prototypes were built by the Pennsy in 1912, one (#1092, class E6sa) with rotary valves and smaller cylinders. Following an extensive testing program, the PRR decided prototype #89 (class E6s) was what was wanted and built 80 duplicates in 1914. Prototypes 5075 (now renumbered 1067) and 1092 were converted to E6s in 1913, making 83 of the class in all.

They were reported to be the first locomotives anywhere to develop an actual (vs. theoretical) 1,000 horsepower per driving axle.

To my knowledge, only one was preserved. #460, the famous "Lindbergh Special" engine, is at the Railroad Museum of Pennsylvania (Strasburg PA).

PRR Steam Locomotive

The steam locomotive on the left is a Pennsylvania Railroad E class "Atlantic" type with a 4-4-2 wheel arrangement. These were the 737s of their time. They hauled short distance passenger trains at high speed. These locomotives had 80 inch driving wheels, and were capable of 100 mph.

And the engine is

That's a Pennsy E6s on the tracks.

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