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  • Topic: Smoke stacks on geared locos

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    • February 10, 2020 4:21 PM EST
      • Washington
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      Smoke stacks on geared locos

      I know what they look like but when were different smoke stacks, (onion, straight, balloon etc) used on geared locos?  Or did it make any difference?

    • February 10, 2020 4:40 PM EST
      • Ottawa/Nepean, Ontario, Canada
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      Those different stacks were used to stop sparks and embers from flying out and setting fires along the right of way. The shapes were determined by what fuel was being used, and the type of screening invention was applied. Different types of wood, and different hardness of coal, could each have different types of screening, and in different stacks.  There were also different inventors, and patents...   Some fuels required longer, or shorter smoke boxes, and fire boxes were different also.   Oil fired locomotives are another story too.

        Fred Mills


    • February 10, 2020 5:16 PM EST
      • Vail, Az
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      Also as Dave has shown us with #315, there are baffles in modern smokeboxes to trap the cinders and embers. 

      After that the stacks could be designed for best drafting of air through the firebox, producing more efficient fires.




      The older I get, the less I know, please don't make me prove it.



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