I know it had a 567 engine (or maybe I’m wrong) but which one?
And also, besides the initial problems (that were later fixed), how good
of an engine was it? Did it pull good?
Any books or videos that talk about UP’s DD series?
The DD35A had a cab at one end-
http://www.rrpicturearchives.net/showPicture.aspx?id=109136
The DD35 was cabless-
http://www.rrpicturearchives.net/showPicture.aspx?id=109137
http://www.rrpicturearchives.net/showPicture.aspx?id=21215
http://www.rrpicturearchives.net/showPicture.aspx?id=21216
The engines were the same as GP35’s but they had GE 752E traction motors instead of EMD’s D67B.
The DD35A had 2- 567D3A engines, the same model as in the GP35. I would say that so-so is a good description of its performance. The UP choose to have GE 752 traction motors fitted to help prevent burned up motors. The last one built was fitted with EMD’s improved D77 traction motors. When UP used them as runners on thier faster Intermodals they were alright, but as they aged and were downgraded to drag freight power their limitations showed. In this era none of the builders had effective wheelslip controls and the increasing power per axle brought this problem to the forefront. There are several books and videos covering EMD’s Centennials which give some converage to these locomotives as predecessors to the Centennials.
They were also great moving rail straighteners… which is not always what is wanted, particularly in tighter switchwork.