The PRR S1 class steam locomotive (nicknamed "The Big Engine") was a single experimental duplex locomotive of the Pennsylvania Railroad. It was designed to demonstrate the …

Apr 28, 2014 · For the SPFs, an ad from Life magazine in 1941. The main illustration really caught my eye, the S1 in a scene with Hulett unloa...

The PRR S1 class 6-4-4-6 #6100. Built by the Pennsylvania Railroad in 1939, it measured in at 140+ feet long. Bigger than the famous Big Boys on the Union Pacific.

Nov 17, 2020 · The first experimental duplex on the PRR was the S1, a huge rigid frame duplex locomotive of the 6-4-4-6 wheel arrangement. This engine was over 146' long! This locomotive …

The Pennsylvania Railroad Class S1 steam locomotive (nicknamed "The Big Engine") was a single experimental locomotive, the longest and heaviest rigid frame reciprocating steam …

Jul 5, 2018 · The S1 was built in PRR’s Altoona Works in Altoona, Pennsylvania during 1938. The S1 was given the Altoona serial number 4341 and the PRR number 6100. The PRR S1 was a …

Sep 23, 2018 · The S-1 had a difficult time negotiating many curves on PRR’s vast network of tracks, particularly at speed. Eventually, it served only between the PRR’s Crestline, Ohio, …

Sep 11, 2018 · In the early 1940s, the S1 was operated in profitable service pulling one of the longest passenger trains for PRR—a 2,000-ton (1,814-t) train consisting of 22 cars. The S1 …

Dec 24, 2023 · PRR #6100 made its first test run eighty-five years ago today. The class S1 6-4-4-6 duplex had to run in reverse all the way to Huntingdon , PA (35 miles), because Altoona had …

The PRR S1 was an experimental locomotive that had the largest rigid frame a passenger locomotive ever had. The streamlined shell of the locomotive was designed by Raymond …