EMD E9

EMD E9

UP #949 leads an excursion through Clinton, Iowa in August 1995.

Type and origin Power type Diesel Builder General Motors Electro-Motive Division (EMD) Model E9 Build date April 1954 – January 1964 Total produced 100 A units, 44 B units

Specifications AAR wheel arr A1A-A1A Gauge 4 ft 8 1⁄2 in (1,435 mm) Wheel diameter 36 in (914 mm) Minimum curve 57° (?) 104.79 ft or 31.94 m 27° (?) 214.18 ft or 65.28 m Length 70 ft 3 in (21.41 m) Width Height 14 ft 7 in (4.45 m) Loco weight A unit: 315,000 lb (143,000 kg), B unit: 290,000 lb (130,000 kg) Fuel type Diesel Prime mover (2) EMD 567C Engine type V12 Two-stroke diesel Traction motors (4) GM D37 Cylinders 12

Performance figures Maximum speed 117 mph (188 km/h) Power output 2,400 hp (1,790 kW) Tractive effort 56,500 lb (25,600 kg) starting, 31,000 lb (14,000 kg) continuous

Career Locale United States Disposition most scrapped, several preserved, none in revenue service though some used on special trains

The E9 is a 2,400-horsepower (1,790 kW), A1A-A1A passenger train-hauling diesel locomotive built by General Motors' Electro-Motive Division of La Grange, Illinois between April 1954 and January 1964. 100 cab-equipped A units were produced and 44 cabless booster B units, all for service in the United States. The E9 was the tenth and last model of EMD E-unit and differed from the earlier E8 as built only by the newer engines and a different, flusher-fitting mounting for the headlight glass, the latter being the only visible difference. Since some E8s were fitted with this, it is not a reliable way to distinguish the two.

The E9 has two 1,200 hp (895 kW), V12 model 567C engines, each engine driving one generator to power two traction motors.

Engine and powertrain

The E9 uses twin 12 cylinder 567C engines developing a total of 2,400 hp (1,800 kW) at 800 rpm. Designed specifically for railroad locomotives, this Roots-blown, naturally-aspirated 2-stroke 45-degree V-type, with an , bore by stroke, giving 567 cubic inches (9.29 L) displacement per cylinder, remained in production until 1966. Two D.C. generators, one per engine, provide power to four motors, two on each truck, in an A1A-A1A arrangement. This truck design was used on all E units and on MP 7100 and CB&Q 9908 power cars. EMD has built all of its major components since 1939.

Operation

The E9 powered American passenger and mail trains from the 1950s into the late 1970s. Many of America's finest trains — such as Union Pacific Railroad's "City" fleet, Burlington's "Zephyr" fleet and Southern Pacific Railroad's Coast Daylight and Sunset Limited — had E9s pulling them. E9s and their E7 and E8 kin ran throughout the country on lesser-known passenger trains, Chicago's network of commuter trains and many mail and express trains. As America's passenger train network shrank due to unprofitibility, Union Pacific, Rock Island and Illinois Central Railroad began using E9s on freight trains.

Amtrak, founded in 1971, bought 36 E9As and 23 E9Bs from the Union Pacific, Milwaukee Road, B&O and SCL. Amtrak used the E9s until the late 1970s and converted some E9B units to steam generator and head end power cars.

Original owners

Railroad	Quantity A units	Quantity B units	Road numbers A units	Road numbers B units	Notes
Baltimore and Ohio Railroad	4	—	34, 36, 38, 40	—	all bought by Amtrak
Chicago, Burlington and Quincy Railroad	16	—	9985A,B–9989A,B 9990–9995	—	Renumbered into 9900-9924 series (with 9 E8As). Rebuilt with 645 power assemblies and HEP. Used in Chicago suburban service into the 1990s.
Chicago and Eastern Illinois Railroad	1	—	1102	—	to Missouri Pacific Railroad
Chicago, Milwaukee, St. Paul and Pacific Railroad	12	6	200A,C–205A,C	200B–205B	Built to Union Pacific specifications for City train service. Renumbered 30ABC–35ABC
	6	—	36A,C–38A,C	—	Built with Head end power for commuter service
Florida East Coast Railway	5	—	1031–1035	—	to Illinois Central 2036-2040 in 1969 via Precision National
Illinois Central Railroad	10	4	4034–4043	4106–4109
Kansas City Southern Railway	1	—	25	—	Model E9m
Seaboard Air Line Railroad	1	—	3060	—	bought by Amtrak
Southern Pacific Railroad	9	—	6046–6054	—	6051
Union Pacific Railroad	35	34	900–914, 943–962	910B–913B, 950B–974B
Totals	100	44

Surviving examples

Many E9s survive today. According to Andrew Toppan's list of March 5, 1997, 42 survive. Four E9s are owned by the Illinois Railway Museum, in Union, Illinois. A number of railroads keep a small number in service for hauling inspection specials, charter passenger trains, investor tours, and the like. The Union Pacific Railroad rosters three, (951, 949, and 963B), which have been re-engined with single EMD 16-645E engines for commonality with other UP power and thus ease of maintenance. ex-CB&Q 9995 sits in Alamosa,CO as SLRG 9925; see http://www.rrpicturearchives.net/showPicture.aspx?id=3907067

See also

• List of GM-EMD locomotives

References

Bibliography

• Reich, Sy (1973). Diesel Locomotive Rosters – The Railroad Magazine Series. Wayner Publications. No Library of Congress or ISBN.
• Extra 2200 South #43 November December 1973 Amtrak Roster by Dick Will p.13
• Extra 2200 South #43 November December 1973 E8/E9 Roster and article by Dan Dover and Win Cuisinier (Preston Cook) pp. 14-24

External links

• Illinois Railway Museum's Equipment roster (type "E9" and search the collection)
• Andrew Toppan's list
• The Union Pacific's trio of re-engined E9s