Talk:ALCO DL-109

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The last DL109 was New Haven 0716. It was scrapped in the early 1970s. --SSW9389 22:30, 26 November 2005 (UTC)

The roster on Diesel Shop http://www.thedieselshop.us/Alco_DL109.HTML shows the GM&O units as type DL107 even though they were built two months prior to Rock Island #622 which is shown as a DL105. Steinbrenner pp. 176-178 shows both the GM&O #270-271 and Rock Island #622 as the only examples of type DL105. Steinbrenner's roster on p. 178 shows that the New Haven units were the first DL109s dating from December 1941. --SSW9389 (talk) 14:13, 27 May 2008 (UTC)

Suspect, but don't yet know for a fact that the DL109/DL110 differed from the DL107/DL108 in electrical equipment and specifically in traction motors. The New Haven DL109s were said to have been built with the GE 726 traction motor, an early predecessor of the GE 752 traction motor. This was from a very thorough discussion on railroad.net ALCO Forum about the traction motors used on the DL109s and PA-1s.--SSW9389 (talk) 14:18, 27 May 2008 (UTC)