The H12-44 began production during May of 1950 following the earlier H10-44. Railroads had liked this switcher and apparently
were just after increased horsepower as the H12-44 sold even better. It
came equipped with a standard Fairbanks Morse 2-cycle 38D8 1/8 opposed
piston prime mover that could produce 1,200 horsepower using a B-B truck
setup (meaning two axles per truck). The carbody styling was again inspired by noted industrial designer Raymond Loewy.
However, to reduce production costs FM simplified the design in the fall
of 1952 removing many of the styling features Loewy had suggested. It
did not really take away from the model's attractiveness although the
locomotive did sport a more basic, boxy appearance.
The FM H12-44 carried roughly the same tractive effort as models being
offered at the time by both Electro-Motive Division (EMD) and the American
Locomotive Company (Alco); 61,000 pounds starting and 34,000 pounds continuous. Thanks to the locomotive's relatively light-weight the H12-44 was ideal for use in both yard/switcher service and could also be used in light
freight service with its respectable horsepower rating. FM's classification system somewhat resembled Balwin's initial system, although somewhat more simplified. In regards to the
H12-44; the “H” stood for Hood unit, “12” was for 1,200 horsepower, and
each 4 meant four axles and four traction motors.
|Milwaukee Road H12-44s #736 and #719 rest for the evening at the engine terminal in Savanna, Illinois during a July evening in 1964.|
Overall the locomotive sold 369 units in the U.S./Canada by the time production had ended in
March of 1961 making it the manufacturer's most successful. The
Santa Fe certainly liked the switcher as the company wound up with 59 examples employing them
heavily in light duty work. Generally FM models sold relatively poorly although it is not necessarily because Fairbanks Morse's models in general were unreliable, as was usually the case with Alco (early on anyway) and particularly Baldwin. Reliability with FM's
diesel locomotives has often been questioned but I believe the issue
was mostly due to the fact that FM's opposed-piston prime mover was difficult to maintain and far different from the standard designs being offered by the other builders.
For instance, in regards to the Train Master, it has been noted by John Kirkland in his book The Diesel Builders Volume 1
that the locomotives performed admirably for more than 20 years on the
Southern Pacific due to a maintenance team that understood the model, despite taking a daily beating in freight service.
In any event, the H12-44 was purchased by a little more than a dozen
Class I systems including industries Ayrshire Collieries, U.S. Steel -
Fairless Works, Yankeetown Dock, and the Tennessee Valley Authority.
Even the U.S. Army bought the locomotive, 20 to be exact! FM's Canadian
arm also built 30 for Canadian National Railway
as well as an A1A-A1A design known as the H12-46. CN ultimately wound
up with 30 examples of the variant built during the early 1950s.
Fairbanks Morse H12-44 Production Roster
|Ayrshire Collieries Corporation||1||1||1957|
|Canadian National||7600-7629 (H12-46)||30||1951-1953|
|Chihuahua-Pacific Railway (Mexico)||70||1||1961|
|Baltimore & Ohio||196-197, 310-319, 9722-9726||17||1951-1957|
|Central Of Georgia||315-318||4||1953|
|Chicago & North Western||1071-1072, 1110-1116||9||1950-1953|
|Columbia & Cowlitz Railway||D-2||1||1956|
|Fairless Works (U.S. Steel)||GE9-GE16||8||1951-1952|
|Indianapolis Union Railway||19-21||3||1952|
|Kentucky & Indiana Terminal||60-66||7||1951-1953|
|Milwaukee Road||1826-1847, 2300-2325||48||1950-1954|
|Minnesota Western Railroad||10||1||1951|
|New York Central||9111-9137||27||1950-1952|
|Nickel Plate Road||134-155||22||1953-1958|
|Santa Fe||503-540, 544-564||59||1950-1957|
|Santa Fe||541-543 (H12-44TS)||3||1956|
|St. Louis San Francisco Railway (Frisco)||282-285||4||1951|
|Southern Pacific||1486-1491, 1529-1538, 1568-1596||45||1952-1957|
|Tennessee Valley Authority||22||1||1954|
|Weyerhaeuser Timber Company||1||1||1951|
|Santa Fe H12-44TS #543, one of three the road bought in 1956, pushes then-Amtrak's "Super Chief" into Chicago Union Station on October 14, 1972. The AT&SF had purchased this customized model with an added short hood for a steam generator to switch passenger consists at stations.|