S1a and M2 Automatic

nw-mailing-list at nwhs.org nw-mailing-list at nwhs.org
Sun Sep 17 00:07:46 EDT 2006

The capacities resulted from the designers seeing how big a tender they
could put on that frame and still allow clear vision to the back..
Incidently, the frame on both tenders under consideration was the same
one. (from a USRA 12,000 gallon tender) At the time, I think I heard
someone in Bluefield say an S1a burned 500 pounds an hour, so the 15 ton
bunker would last 48 hours or more at that rate. Jim Nichols

nw-mailing-list at nwhs.org wrote:

> All,


> Some questions/clarification:

> First on the coal side:

> The S1a had a 15 ton tender. this was designed around 24 hours? or 12?

> The M2 Automatic had 20 ton tender. I read it was designed around 2

> days of fuel 48 hours? Is this true?


> Second Water:

> The S1a had 13,000 gallons in tender. what time span was this based

> on. 2 fills per coal fill? 3

> The M2 Automatic 11000 gallons. Any ideas?


> Thanks,


> John Rhodes





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