One pump or two?

[NW Mailing List]

At 12:43 AM 1/1/08, you wrote:
 > I've seen that photo of the Y-3, but believe it had two air pumps 
mounted on the smokebox front.
 >
 >> http://spec.lib.vt.edu/imagebase/norfolksouthern/F1/NS5878.JPG

There is an awful lot of empty space on the front of the smokebox for there 
to be a second pump. Compare to this ca.1920 photo of 2009:
http://spec.lib.vt.edu/imagebase/norfolksouthern/full/ns970.jpeg

and this winter 1920/21 photo of 2040:
http://spec.lib.vt.edu/imagebase/05RRneg/screen/NW200409071424.jpg

(couldn't find a positive for this one so I'm attaching it)

David Thompson

[moderator] Image extracted to following:
http://nwhs.org/qna/photos/20080101-NW200409071424.jpg