Mucking about with a short furnace Winans, Baltimore & Ohio No 171. Still needs work, but video makes a great debugging tool.
Aside from her short firebox, 171 has several differences from her sisters. Her headlight is off center. Her feed pump is driven by a connection to the rear of her connecting rod, rather than the "conventional" long rod from her crosshead.
https://i.pinimg.com/originals/9c/bb/bb/9cbbbb1431bff3c1959d90c6b4b39243.jpg
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Railfanning the 19th Century: B&O #171 Test Drive
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