FM H-12-44

{{Short description|American diesel locomotive}}

{{more footnotes|date=June 2017}}

{{stack|{{Infobox locomotive

| name=FM H-12-44

| powertype=Diesel-electric

| gauge={{track gauge|ussg}}

| image=SP 2380 switching Del Monte at SJ 4-71 (17120050020).jpg

| caption=SP #2380 backs the Del Monte into San Jose in April 1971, a week before the Amtrak takeover.

| builder=Fairbanks-Morse

| aarwheels=B-B

| trucks = AAR type A

| wheeldiameter = {{convert|40|in|mm|0|abbr=on}}

| minimumcurve = 29.50 ({{convert|194|ft|m|2|abbr=on}} radius)

| wheelbase = {{convert|33|ft|6|in|m|2|abbr=on}}

| cylindercount=6 (Opposed piston)

| primemover=FM 38D-8 1/8

| builddate=May 1950 – March 1961

| totalproduction=336

| locale=North America

| poweroutput={{convert|1200|hp|kW|0|abbr=on|lk=in}}

| maxspeed={{convert|60|mph|km/h|0|abbr=on}}

| locoweight={{convert|240000|lb|t|1|abbr=on}}

| tractiveeffort={{convert|40440|lbf|kN|1|abbr=on|lk=on}})

| length={{convert|48|ft|10|in|m|2|abbr=on}}

| width = {{convert|10|ft|4|in|m|2|abbr=on}}

| height = {{convert|14|ft|6+5/8|in|m|2|abbr=on}}

| enginetype=Opposed piston Two-stroke diesel

| aspiration=Roots blower

| cylindersize={{convert|8.125|x|10|in|mm|0|abbr=on}}

| displacement={{convert|6222|cuin|L|abbr=on}}

| generator = FM DGZJ

| tractionmotors = (4) FM DRZH

| transmission=

| locobrakes=Straight air

| trainbrakes=Air

| buildmodel=H-12-44

| disposition=Most scrapped, sixteen examples preserved

}}

}}

The FM H-12-44 was a switcher locomotive produced by Fairbanks-Morse from May 1950 until March 1961. The units had a {{convert|1200|hp|adj=on}}, six-cylinder opposed piston engine prime mover, and were configured in a B-B wheel arrangement mounted atop a pair of two-axle AAR Type-A switcher trucks, with all axles powered and geared for a top speed of {{convert|60|mph|km/h}}.

Of the 336 H-12-44 locomotives produced, 303 were for American railroads, 30 were made between August 1951 to June 1956 by the Canadian Locomotive Company for use in Canada, and one was exported to Mexico.

H-12-44s were visually indistinguishable from the predecessor FM H-10-44 until September 1952, when the Raymond Loewy design elements were removed to reduce production costs. Cab lines were squared-off, the slanted-nose styling was discontinued, and the roof visor was eliminated. The following year, the fairing over the battery box was removed and louvers added to reduce the chance of battery explosions. Production paused from May to October 1956, after which the carbodies were shortened by some three feet and outfitted with a deeper side skirt.

Sixteen intact examples of the H-12-44 are known to survive, all of which are owned by railroad museums or historical societies.

Units produced by Fairbanks-Morse (1950–1961)

class="wikitable"

! Railroad !! Quantity !! Road numbers !! Notes

Fairbanks-Morse (demonstrator)style="text-align:center;" |1style="text-align:center;" |76to Yankeetown Dock Corporation 1
Atchison, Topeka and Santa Fe Railwaystyle="text-align:center;" |59style="text-align:center;" |503–540, 544–5643 custom-built FM H-12-44TS locomotives 541-543. 543 survives today
Ayrshire Collieries Corporationstyle="text-align:center;" |1style="text-align:center;" |1to Thunderbird Collieries 1;
to Yankeetown Dock 3
Baltimore and Ohio Railroadstyle="text-align:center;" |17style="text-align:center;" |196–197, 310–319, 9722–9726310–319 renumbered 9710–9719,
196–197 renumbered 9720–9721
Canadian National Railwaystyle="text-align:center;" |30style="text-align:center;" |1630–1659built by Canadian Locomotive Company
Central of Georgia Railwaystyle="text-align:center;" |4style="text-align:center;" |315–318
Chicago and North Western Railwaystyle="text-align:center;" |9style="text-align:center;" |1071–1072, 1110–1116
Chicago, Milwaukee, St. Paul and Pacific Railroad ("Milwaukee Road")style="text-align:center;" |48style="text-align:center;" |1826–1847, 2309–2325Renumbered 700–710, 715–744, 750–756 (not in order)
Columbia and Cowlitz Railwaystyle="text-align:center;" |1style="text-align:center;" |D-2Renumbered #700)
Ferrocarril de Chihuahua al Pacíficostyle="text-align:center;" |1style="text-align:center;" |70
Indianapolis Union Railwaystyle="text-align:center;" |3style="text-align:center;" |19–21
Kentucky and Indiana Terminal Railroadstyle="text-align:center;" |7style="text-align:center;" |60–66
Minneapolis, St. Paul and Sault Ste. Marie Railroad ("Soo Line")style="text-align:center;" |5style="text-align:center;" |315–319
Minnesota Western Railwaystyle="text-align:center;" |1style="text-align:center;" |10to Minneapolis, Northfield and Southern Railway 10
New York Central Railroadstyle="text-align:center;" |27style="text-align:center;" |9111–9137To Penn Central 8300-8326
New York, Chicago and St. Louis Railroad ("Nickel Plate Road")style="text-align:center;" |22style="text-align:center;" |134–155to Norfolk and Western Railway 2134–2155
Pennsylvania Railroadstyle="text-align:center;" |16style="text-align:center;" |8708–8723to Penn Central 8327–8342
Sandersville Railroadstyle="text-align:center;" |1style="text-align:center;" |100Renumbered 10
St. Louis-San Francisco Railway ("Frisco")style="text-align:center;" |4style="text-align:center;" |282–285
Southern Pacific Companystyle="text-align:center;" |43style="text-align:center;" |1486–1491, 1529–1574, 1577–1596
Southern Pacific (Texas and New Orleans Railroad)style="text-align:center;" |2style="text-align:center;" |119–120to Southern Pacific 1575–1576; renumbered 2373–2374
Tennessee Valley Authoritystyle="text-align:center;" |1style="text-align:center;" |22
United States Armystyle="text-align:center;" |20style="text-align:center;" |1843–1862
U.S. Steel, Morrisville, Pennsylvaniastyle="text-align:center;" |8style="text-align:center;" |GE9–GE16
Wabash Railroadstyle="text-align:center;" |3style="text-align:center;" |384–386to Norfolk and Western 3384–3386
White River Lumber Company (Weyerhaeuser Timber Company)  

|style="text-align:center;" |1

style="text-align:center;" |WTC 1To Pacific Transportation Services 121 then transferred to Northwest Railway Museum where it is preserved in running condition
Yankeetown Dock Corporationstyle="text-align:center;" |1style="text-align:center;" |2
Total336

Preservation

File:Weyerhaeuserfmh12-44.jpg

Several examples of the H-12-44 model have been preserved around the U.S. and Canada.

References

  • {{cite web|title=Fairbanks-Morse 38D8 Diesel Locomotive |work=PSRM Diesel Locomotives |url=http://www.psrm.org/index.php/trains/diesel/1361 |access-date=October 25, 2014 |url-status=dead |archive-url=https://web.archive.org/web/20141025084103/http://www.psrm.org/index.php/trains/diesel/1361 |archive-date=October 25, 2014 }}
  • {{cite web |title=A Fairbanks-Morse locomotive is being saved |url=http://www.urhs.org/other_pages/fm_saved.html |archive-url=https://web.archive.org/web/20060830230441/http://www.urhs.org/other_pages/fm_saved.html |url-status=dead |archive-date=August 30, 2006 |access-date=June 18, 2006 }}
  • {{Dorin-North Western|page=154}}
  • {{Pinkepank diesel spotters guide 2}}
  • {{cite book

| last = Kirkland

| first = John F.

| title = The Diesel Builders Volume 1: Fairbanks-Morse and Lima-Hamilton

|date=November 1985

| publisher = Interurban Press

| isbn = 0-916374-69-6

}}

;Specific