• SW1 567U to 567V transition

  • Discussion of Electro-Motive locomotive products and technology, past and present. Official web site can be found here: http://www.emdiesels.com/.
Discussion of Electro-Motive locomotive products and technology, past and present. Official web site can be found here: http://www.emdiesels.com/.

Moderator: GOLDEN-ARM

  by SSW921
 
EMC's new 567 engine development in later 1939 was the 567V. Historians have not written much about this change from the previous 567U, so little is known of what units had which engines. Perhaps the best explanation of the difference between the 567U and the 567V is written by Preston Cook. See pages 28-29 of the Summer 2012 issue of Classic Trains. Cook writes about the change in the exhaust riser well between the cylinder banks. The 567 U deck was cast steel, the 567 V deck was welded steel. The U and the V described the shape of the exhaust riser well. EMD Engineer Gene Kettering writes about these differences between the 567 U and 567 V in his 1951 paper presented to the American Society of Mechanical Engineers. See pages 55-58 as hosted on Don Strack's Utah Rails website: https://utahrails.net/pdf/EMD_567_Histo ... t_1951.pdf

Now specifically about EMC's SW1. The last 6-567 U deck engines were likely installed in order E284 for Illinois Central 9014-9020. Deliveries of this order spanned December 1939 and January 1940. Another pair of SW1s delivered to Great Lakes Steel as #11-12 in September 1940 on order E349 may have been built during this same time period. Both the Illinois Central and Great Lakes Steel SW1s had the same wiring diagram #8048125. That number appears to be an EMC standard design wiring diagram for SW1s. The first production SW1 Fort Worth Belt #1 had the same wiring diagram as did many other early SW1s. The new "standard" wiring diagram started with Elgin, Joliet & Eastern's order E291 in January and February 1940. The five EJ&E SW1s had wiring diagram #8049492, which was used in many following SW1s orders. It would appear likely that the change in engine from 6-567U to 6-567V led to an updated wiring diagram for the SW1.

There are still many unknowns in this 567U to 567V changeover. Were there previous demonstrators of the 567V? The Great Lakes Steel SW1s appear to have both been assembled in later 1939 and not sold for nearly a year. More later on 12-567U and 12-567Vs used in the EMC switchers and E units of the time.

Ed in Kentucky
  by SSW921
 
On page 58 of Gene Kettering's presentation he talks about some 600 567Us being built. My question would be how many were installed in locomotives? It appears that marine installations were another area where these early 567s were used. See https://vintagedieseldesign.com/tag/emc/

Ed in Kentucky