EMD SD45u

Specifications
Configuration:;
• AAR	C-C
Gauge	4 ft 8 1⁄2 in (1,435 mm) standard gauge
Length	65 feet 8 inches (20.02 m); 65 feet 9 1⁄2 inches (20.053 m) on some units starting early 1968.
Loco weight	368,000 pounds (167,000 kg)
Prime mover	EMD 645
Engine type	V20 diesel
Generator	AR10B
Cylinders	20

Type and origin
Power type	Diesel
Builder	General Motors Electro-Motive Division (EMD)
Model	SD45; SD45u
Build date	1966 – 1974
Total produced	125
Rebuild date	March 1980 – October 1985
Number rebuilt	115

EMD SD45u
	Santa Fe SD45U #5408 in November of 1985.
Type and origin
Power type	Diesel
Builder	General Motors Electro-Motive Division (EMD)
Model	SD45; SD45u
Build date	1966 – 1974
Total produced	125
Rebuild date	March 1980 – October 1985
Number rebuilt	115
Specifications
Configuration:;
• AAR	C-C
Gauge	4 ft 8 1⁄2 in (1,435 mm) standard gauge
Length	65 feet 8 inches (20.02 m); 65 feet 9 1⁄2 inches (20.053 m) on some units starting early 1968.
Loco weight	368,000 pounds (167,000 kg)
Prime mover	EMD 645
Engine type	V20 diesel
Generator	AR10B
Cylinders	20
Performance figures
Maximum speed	71 miles per hour (114 km/h)
Power output	3,600 hp (2,680 kW)
Tractive effort	Starting: 92,000 lbf (410 kN); Continuous: 82,100 lbf (365 kN) @ 11 mph (18 km/h)
Career
Class	SD45:; ATSF 1800 and 5590 class (1800-1889, 5590-5624); SD45U:; ATSF 5430 and 5500 class (5430-5437, 5500-5589)
Numbers	ATSF 1800-1889, 5590-5624 (SD45); ATSF 5400-5483 (SD45u)

The EMD SD45u is a was a rebuild from EMD SD45 diesel locomotives that were originally built by General Motors Electro-Motive Division (EMD) originally for the Atchison, Topeka and Santa Fe Railway.^[1]^[2]

History[edit]

Between 1966 and 1974, General Motors Electro-Motive Division (EMD) had built 125 EMD SD45 diesel locomotives for the Atchison, Topeka and Santa Fe Railway.^[1]

But there was an issue with the EMD SD45, the locomotives had some teething problems mainly by their massive twenty-cylinder prime movers that were prone to crankshaft failures from the engine block flex. Though it produced 600 horsepower (450 kW) more when compared to the EMD SD40's 16-645E3 prime movers, some railroads that were using EMD SD45 locomotives had felt that the extra horsepower wasn’t worth it, even after EMD strengthened the block to eliminate the crankshaft failures. At low speeds, when tractive effort was adhesion-limited, and thus, the EMD SD45 provided no advantage over the EMD SD40.^[1]

As a result of all these issues, the Atchison, Topeka and Santa Fe Railway has rebuilt 115 units into what had become the EMD SD45u.^[1] They were all renumbered as 5400-5483 between 1979 and 1989.^[1]^[2]

The majority of SD45u locomotives had lasted into the days of the Burlington Northern Santa Fe Railway (BNSF).^[3]

References[edit]

↑ ^1.0 ^1.1 ^1.2 ^1.3 ^1.4 "ATSF EMD SD45/SD45u Power Roster". old.atsfrr.org. Retrieved 2023-10-29.
↑ ^2.0 ^2.1 Extra Twenty-two Hundred South - Issues 112-118. Dover Printing. 1997. p. 9. Search this book on
↑ "BNSF Motive Power Roster". www.trainpix.com. Retrieved 2023-10-29.

External links[edit]

ATSF EMD SD45/SD45u Power Roster

This article "EMD SD45u" is from Wikipedia. The list of its authors can be seen in its historical and/or the page Edithistory:EMD SD45u. Articles copied from Draft Namespace on Wikipedia could be seen on the Draft Namespace of Wikipedia and not main one.

[:0-1] 1.0 ^1.1 ^1.2 ^1.3 ^1.4 "ATSF EMD SD45/SD45u Power Roster". old.atsfrr.org. Retrieved 2023-10-29.

[:1-2] 2.0 ^2.1 Extra Twenty-two Hundred South - Issues 112-118. Dover Printing. 1997. p. 9. Search this book on

[3] "BNSF Motive Power Roster". www.trainpix.com. Retrieved 2023-10-29.

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[2]

[3]

EMD SD45u

Contents

History[edit]

References[edit]

See also[edit]

Further reading[edit]

External links[edit]

📰 Article(s) of the same category(ies)[edit]