ATSF Motive Power Episode 7 - 3800 Class 2-10-2's Replace Articulated Locomotives.

With the compounded steam and articulated locomotive era behind them, Santa Fe Railway under the direction of John Purcell pressed forward with 2 cylinder simple locomotive development. Following John Purcell's design genius, the 3800 Class 2-10-2, is developed and becomes their first taste of high-power.

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John Purcell's 3800 Class 2-10-2's are immediately successful and John order's a four-wheel trailing truck added to engine 3829 while it is still on the production line at the Baldwin Locomotive Works. Thus, Santa Fe creates the world's first 2-10-4.

At this point the steam locomotive had been taken as far as possible with a 2-wheel trailing truck. The firebox and pistons on steam locomotives could not be made any larger unless the four-wheel truck is successful.

If the four-wheel trailing truck works out in trial runs on 3829, a whole new world of larger and more powerful steam locomotives can be developed.

Video Contents:
00:00 Introduction
00:14 1674 Class - First Order of simple 2-cylinder 2-10-2's.
01:19 3800 Class - Santa Fe's first real taste of high power.
03:49 AT&SF 3829 - The World's First 2-10-4.
05:55 Success of 2-10-4 3829 clears the path for the 3751 and 500 Classes.
07:36 Important men in the Santa Fe locomotive development history.
08:53 Purcell designed 2-10-2 3800's replaces the articulated mallets.
10:53 Lessons learned by experience on the Santa Fe.
11:40 Time to blend the lessons learned into the 3751 Class.

Recommended Links:
1. https://youtu.be/uFPK_OA2pus
2. https://youtu.be/2Pes13ZeJJo