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- Q5323395 subject Q13269070.
- Q5323395 subject Q15254610.
- Q5323395 subject Q15361383.
- Q5323395 subject Q16791614.
- Q5323395 subject Q8357662.
- Q5323395 subject Q8376385.
- Q5323395 subject Q8627153.
- Q5323395 subject Q8810064.
- Q5323395 subject Q8866465.
- Q5323395 abstract "The EMD DD35 was a 5,000 horsepower (3,700 kW) diesel-electric locomotive of D-D wheel arrangement built by General Motors Electro-Motive Division for the Union Pacific Railroad and Southern Pacific Railroad. In the early 1960s, Union Pacific started asking for a 15,000 hp (11,200 kW) 3-unit locomotive set to not only replace their turbine locomotives, but to bring new generation of diesel locomotives to the states, and then put them into use. The DD35 was a cabless booster (B unit) locomotive that consisted of two GP35 locomotives prime movers (engines) and electrical systems, mounted on a common frame and covered with a single cowling, riding on a pair of 4-axle Flexicoil trucks, so each prime mover was powering a single set of 4 axles instead of two sets of 2 axles, as in the GP35. Being a "B-unit", the DD35 lacked any sort of cab, and could only be run on the main line when connected with another "A-unit" to control it. The 4-axle truck was considered too harsh on the trackwork to be in the lead, and thus EMD's response to UP's request was a 4-unit (instead of the requested 3-unit set) locomotive set, consisting of a pair of 2,500 hp GP35s sandwiching a pair of DD35s, to make one 15,000 hp locomotive set (basically six GP35's in four units)EMD produced a demonstrator set like this in September 1963, painted in striking red and white (similar to the Frisco's livery). It was demonstrated on a number of railroads, but the only interest came from Union Pacific and Southern Pacific. UP bought the entire 4-unit demonstrator set, and followed up with an order for 25 more, which were delivered from May through September 1964. The two demonstrator locomotives were numbered 72B and 73B; the 25 production locomotives were assigned 74B through 98B.Southern Pacific ordered a small, three-unit sample, which were shipped with old-style bearings from six F3B trade-in units, but ordered no more. They were numbered 8400-8402, later 9500-9502, and still later 9900-9902. They were used on SP's mainline between Los Angeles and New Orleans early in their lives, but were among the first locomotives stored whenever there was a downturn in traffic. Later, they were relegated to transfer service between West Colton and yards closer to Los Angeles, mainly Taylor Yard north of downtown. SP scrapped all three units in 1978 after their leases ran out.The DD35s were initially quite unreliable; some of this was blamed on sand from the internal sandboxes getting in electrical gear, so new sandboxes were fitted on the walkways in 1969. They were among the last EMD road units to be built with DC generators and old-fashioned switchgear, which were more maintenance-intensive than later AC/DC equipment.Once teething troubles had been surmounted, the DD35s were reasonably successful, but they were less flexible than smaller units and thus all of the original B units were withdrawn by 1977 as the railroads fell on harder times. The DD35As survived a little longer, until 1981.".
- Q5323395 activeYearsEndYear "1964".
- Q5323395 activeYearsStartYear "1963".
- Q5323395 builder Q568501.
- Q5323395 engineType Q233154.
- Q5323395 numberBuilt "30".
- Q5323395 powerType Q1163778.
- Q5323395 wikiPageExternalLink centennials.
- Q5323395 wikiPageExternalLink UPDD35.shtml.
- Q5323395 wikiPageExternalLink up-dd35.php.
- Q5323395 wikiPageWikiLink Q1163778.
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- Q5323395 wikiPageWikiLink Q5323396.
- Q5323395 wikiPageWikiLink Q568501.
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- Q5323395 wikiPageWikiLink Q8357662.
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- Q5323395 wikiPageWikiLink Q8627153.
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- Q5323395 wikiPageWikiLink Q8810064.
- Q5323395 wikiPageWikiLink Q8866465.
- Q5323395 wikiPageWikiLink Q906847.
- Q5323395 wikiPageWikiLink Q917714.
- Q5323395 builddate "1963".
- Q5323395 builder Q568501.
- Q5323395 enginetype "2".
- Q5323395 name "EMD DD35".
- Q5323395 powertype Q1163778.
- Q5323395 totalproduction "30".
- Q5323395 type Product.
- Q5323395 type Locomotive.
- Q5323395 type MeanOfTransportation.
- Q5323395 type DesignedArtifact.
- Q5323395 type Thing.
- Q5323395 type Q93301.
- Q5323395 comment "The EMD DD35 was a 5,000 horsepower (3,700 kW) diesel-electric locomotive of D-D wheel arrangement built by General Motors Electro-Motive Division for the Union Pacific Railroad and Southern Pacific Railroad. In the early 1960s, Union Pacific started asking for a 15,000 hp (11,200 kW) 3-unit locomotive set to not only replace their turbine locomotives, but to bring new generation of diesel locomotives to the states, and then put them into use.".
- Q5323395 label "EMD DD35".
- Q5323395 name "EMD DD35".