Empty (tare) weight of 611's Auxiliary Tender?

NW Mailing List nw-mailing-list at nwhs.org
Wed Jul 8 10:31:04 EDT 2015

Could some kind soul please provide the empty (tare) weight of 611's  
current auxiliary tender?
I need the information to complete the input data to calculate, using the  
modified Davis train resistance formula, how much the addition of the 
auxiliary  tender impacts the drawbar horsepower measurements reported from the NS 
Research  Car during the recent excursions.  Then, a valid comparison can 
be made  with the N&W curve reproduced in Col. Jeffries' book, and the curve  
Classic Trains published (on-line) in conjunction with their special issue 
on  4-8-4s.
Thanks in advance,
Dave Phelps
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