All hail the SD40s!         
I am sure some more experienced trainspotter could tell me what makes this SD40 different from the SD40N... But to me its just another SD40.
Date: 8/26/2015 Location: Logan, UT   Map Show Logan on a rail map Views: 372 Collection Of:   Jacob Lyman
Locomotives: UP 3687(SD40N)    Author:  Jacob Lyman
All hail the SD40s!
Picture Categories: This picture is part of album:  Rail Fan to the Future
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User Comments
Name Type Comments Date
John Teeter General The SD40N has an updated locomotive control system. It is somewhat akin to upgrading a -2 to a -3. That's a "quick and dirty" explanation. 1/9/2016 10:50:42 PM
Jacob Lyman General Makes sense. I knew the N units were rebuilds, but I didn't know what the mechanical difference was. Thanks. 1/25/2016 11:42:02 AM

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