Why do USA steam trains make smoke, but UK ones don't?

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Published on June 15, 2023 1:00:26 PM ● Video Link: https://www.youtube.com/watch?v=Qs2JhqBEbK8

Duration: 8:49

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A facebook post spawned a desire to cover this topic of secondary air, and why smoke is made. Hopefully it helps your understanding of locomotives :)

Special thanks to Dynamo Productions for letting me use their footage:
https://www.youtube.com/watch?v=uNF89H1ETRE&t=332s
https://www.youtube.com/watch?v=QRX_0tHnq7c

LMS Training Video, uploaded by the Bennett Brook Railway:
https://www.youtube.com/watch?v=F4J2wcDP3YA

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