FM H-10-44

The FM H-10-44 was a yard switcher produced by Fairbanks-Morse from August, 1944–March, 1950. The units featured a 1,000-horsepower (750 kW), six-cylinder opposed piston prime mover, and were configured in a B-B wheel arrangement mounted atop a pair of two-axle AAR Type A trucks, with all axles powered. Many H-10-44s received modifications that increased their horsepower rating to 1,200 hp (890 kW).

FM H-10-44
Milwaukee Road 760, an H-10-44 and the first FM locomotive, preserved in operating condition at Illinois Railway Museum.
Type and origin
Power typeDiesel-electric
BuilderFairbanks-Morse
ModelH-10-44
Build dateAugust 1944–March 1950
Total produced195
Specifications
Configuration:
​
 • AARB-B
Gauge4 ft 8 1⁄2 in (1,435 mm)
TrucksAAR type A
Wheel diameter40 in (1,016 mm)
Minimum curve29.50 (194 ft (59.13 m) radius)
Wheelbase33 ft 6 in (10.21 m)
Length48 ft 10 in (14.88 m)
Width10 ft 2 in (3.10 m)
Height14 ft 6 in (4.42 m)
Loco weight240,000 lb (108.9 t)
Prime moverFM 38D-8 1/8
Engine typeTwo-stroke diesel
AspirationRoots blower
Displacement6,222 cu in (101.96 l)
GeneratorWesthse 481-A
Traction motors(4) Westhse 362-D
Cylinders6 (Opposed piston)
Cylinder size8.125 in × 10 in (206 mm × 254 mm)
Loco brakeStraight air
Train brakesAir
Performance figures
Maximum speed60 mph (97 km/h)
Power output1,000 hp (746 kW)
Tractive effort40,440 lbf (179.9 kN)
Career
LocaleNorth America
DispositionThree preserved, remainder scrapped

The Raymond Loewy-designed carbody featured a slanted nose, sloping hood lines, and (considered to be its most distinguishing feature) a protruding roof visor mounted on the rear of the cab. These styling cues were carried through to the H-10-44's successor, the FM H-12-44, until September 1952 when the exterior design was "Spartanized" to reduce production costs.

A total of 195 units were built for American railroads. Three intact examples of the H-10-44 are known to survive today, all of which are owned by railroad museums. Most notable of these is Milwaukee Road #760 (originally delivered as #1802), the first Fairbanks–Morse locomotive constructed in their own plant, which is preserved and operational at the Illinois Railway Museum.

Another example is former Hallet Dock Company HD-11, which is now at the Lake Superior Railroad Museum in Duluth, Minnesota.

A reproduction H-10-44 locomotive sits atop the Wood Family Fishing Bridge, a former railroad bridge which crosses the Rock River several hundred yards south of the foundry where the H-10-44s were built, in Beloit, Wisconsin.

Units produced
RailroadQuantityRoad numbersNotes
Apache Railway
2
100, 200
Atchison, Topeka and Santa Fe Railway
3
500–502
Baltimore and Ohio Railroad
10
300–309
Renumbered 9700–9709
Chehalis Western Railroad (Weyerhaeuser)
2
492, 493
Chicago and North Western Railway
21
1036, 1048–1065, 1070, 1082
Chicago, Indianapolis and Louisville Railway (“Monon”)
1
18
Chicago, Milwaukee, St. Paul and Pacific Railroad (“Milwaukee Road’)
23
1802–1818, 1820–1825
Renumbered 760–776, 778–783;
760 (ex-1802), 767 (ex-1809) and 781 (ex-1823) are preserved in museums
Chicago, St. Paul, Minneapolis and Omaha Railway (“Omaha Road”)
5
94–98
Columbia and Cowlitz Railway
1
D-1
to Pacific Great Eastern Railway
Denver and Rio Grande Western Railroad
4
120–123
122 to Frisco 286
Fairbanks-Morse (demonstrator unit)
1
10L45
to Milwaukee Road 1819; renumbered 777
Indianapolis Union Railway
9
10–18
Kentucky and Indiana Terminal Railroad
10
48–52, 55–59
Minnesota Western Railway
1
51
to Minneapolis, Northfield and Southern Railway 11, to Hallet Dock Company HD-11
New York Central Railroad
7
9104–9110
to Penn Central 8204–8210
New York Central (Pittsburgh and Lake Erie Railroad)
4
9100–9103
New York, Chicago and St. Louis Railroad (“Nickel Plate Road”)
9
125–133
to Norfolk and Western Railway 2125–2133
Pennsylvania Railroad
55
5980–5986, 5997–5999, 9080–9099, 9184–9196, 9288–9299
to Penn Central
Pittsburgh, Chartiers and Youghiogheny Railway
1
1
St. Louis-San Francisco Railway
12
270–281
Terminal Railroad Association of St. Louis
4
700–703
Union Pacific Railroad
5
DS1300–DS1304
Wabash Railroad
4
380–383
to Norfolk and Western 3380–3383
Weyerhaeuser Timber Company
1
481
Total195

References
  • "Fairbanks-Morse 38D8 Diesel Engine". PSRM Diesel Locomotives. Archived from the original on May 26, 2006. Retrieved January 1, 2006.
  • Dorin, Patrick C. (1972). Chicago and North Western Power. Burbank, California: Superior Publishing. p. 152. ISBN 0-87564-715-4.
  • Pinkepank, Jerry A. (1973). The Second Diesel Spotter's Guide. Milwaukee, Wisconsin: Kalmbach Publishing. ISBN 978-0-89024-026-7.
  • Kirkland, John F. (November 1985). The Diesel Builders Volume 1: Fairbanks-Morse and Lima-Hamilton. Interurban Press. ISBN 0-916374-69-6.
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