FM H-10-44

The FM H-10-44 was a switcher locomotive 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 type Diesel-electric Builder Fairbanks-Morse Model H-10-44 Build date August 1944–March 1950 Total produced 195
Specifications Configuration: ​  • AAR B-B Gauge 4 ft 8+1⁄2 in (1,435 mm) Trucks AAR type A Wheel diameter 40 in (1,016 mm) Minimum curve 29.50 (194 ft (59.13 m) radius) Wheelbase 33 ft 6 in (10.21 m) Length 48 ft 10 in (14.88 m) Width 10 ft 2 in (3.10 m) Height 14 ft 6 in (4.42 m) Loco weight 240,000 lb (108.9 t) Prime mover FM 38D-8 1/8 Engine type Two-stroke diesel Aspiration Roots blower Displacement 6,222 cu in (101.96 L) Generator Westhse 481-A Traction motors (4) Westhse 362-D Cylinders 6 (Opposed piston) Cylinder size 8.125 in × 10 in (206 mm × 254 mm) Loco brake Straight air Train brakes Air
Performance figures Maximum speed 60 mph (97 km/h) Power output 1,000 hp (746 kW) Tractive effort 40,440 lbf (179.9 kN)
Career Locale North America Disposition Three preserved, remainder scrapped, 1 replica on display

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

Railroad	Quantity	Road numbers	Notes
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 8211-8265
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
Total	195

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.

External links

• Fairbanks-Morse H10-44 Roster
• Preserved Fairbanks Morse Yard Power