ATSF Motive Power Episode 10 - 5001 & 5011 Class 2-10-4's

The 5001 & 5011 Class 2-10-4's are the ultimate development of John Purcell's design team headed by , H. H. Lanning. What is meant by the ultimate development? They had developed the two-cylinder steam locomotive literally to the limit of power and efficiency.

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Video Contents:
00:00 Introduction
00:14 AT&SF 5000 was the Queen of Steam until 1938.
02:12 Developing the 5001 Class
05:54 Development of the 5011 Class

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2. https://youtu.be/uFPK_OA2pus
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Some of the photos used in this video are from the Fred M and Dale M Springer Archives and are used with permission.