FM H-24-66

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FM H-24-66 Train Master
CPR 8909, a Canadian Locomotive Company H-24-66 Train Master.JPG
Canadian Pacific Railway #8909, a CLC H-24-66 or "Train Master."
Type and origin
Power typeDiesel-electric
Builder Fairbanks-Morse
Build dateApril 1953–June 1957
Total produced127
Specifications
Configuration:
   AAR C-C
Gauge 4 ft 8+12 in (1,435 mm)
Trucks Baldwin-style Commonwealth
Length66 ft 0 in (20.12 m)
Loco weight375,000 lb (170,000 kg; 170 t)
Prime mover FM 38D-8 1/8
Engine type 12-cylinders, Opposed piston two-stroke diesel
Aspiration Roots blower
Displacement12,443 cu in (203.90 L)
Generator DC
Traction motors 6x WE 370DE2 DC traction motors (standard)
6x GE 752 DC traction motors
Cylinders 12
Cylinder size 8.125 in × 10 in (206 mm × 254 mm)
Transmission Diesel-electric
Loco brake 24RL air, Dynamic
Train brakes Air
Performance figures
Maximum speed65 mph (105 km/h) / 80 mph (130 km/h)
Power output2,400 hp (1.79 MW)
Tractive effort 112,000 lbf (498.2 kN)
Career
LocaleNorth America

The H-24-66, or Train Master, was a diesel-electric railroad locomotive produced by Fairbanks-Morse and its licensee, Canadian Locomotive Company. These six-axle hood unit road switchers were deployed in the United States and Canada during the 1950s.

Contents

They were the successor to the ultimately unsuccessful Consolidated line of cab units produced by F-M and CLC in the 1950s. Each locomotive produced 2,400 horsepower (1.8 MW). In common with other F-M locomotives, the Train Master units employed an opposed piston prime mover. The model rode on a pair of drop equalized three-axle "Trimount" trucks giving it a C-C wheel arrangement.

Overview

Touted by Fairbanks-Morse as "...the most useful locomotive ever built..." upon its introduction in 1953, the 2,400 horsepower (1.8 MW) H-24-66 Train Master was the most powerful single-engine diesel locomotive available at the time, legendary for its pulling power and rapid acceleration. No competitor offered a locomotive with an equal horsepower rating until the ALCO RSD-7 entered production in January 1954 (EMD followed suit later in July 1958 with the SD24, and GE introduced their U25C in September 1963).

While some railroads saw advantages in the Train Master's greater power, the perception on the part of others that the unit had too much horsepower (coupled with the difficulties inherent in maintaining the opposed-piston engine, inadequacies in the electrical system, and a higher-than-normal consumption of cooling water) contributed to poor marketplace acceptance of the Train Masters. Because of this, both F-M and CLC ultimately left the locomotive business with both parties eventually ceasing to exist altogether.

Variations

Three different carbody variants were produced, and were differentiated as follows: Phase 1a units had their air intake louvers located in a continuous line along the top of the long hood, and a wide separating strip between the radiator fans; Phase 1b modifications were minor, consisting only of a "dip" in the long hood handrails that allowed them to better follow the profile of the side walkways; Phase 2 units boasted fewer air intake louvers, with large gaps separating them (the radiators themselves were divided by only a tiny metal strip).

Units manufactured by Fairbanks-Morse (19531957)

RailroadQuantityRoad numbersNotes
Fairbanks-Morse (demonstrator units)4TM-1 TM-4TM-1 & TM-2 to Wabash Railroad 550–551;
TM-3 & TM-4 to Southern Pacific 4800–4801/3020–3021
Canadian National Railway 13000Later renumbered 2900.
Canadian Pacific Railway 18900Only CPR Train Master built by FM (not CLC). Delivered with a single steam generator. Remaining (twenty) CPR Train Masters (8901-8920) built by CLC (see below).
Central Railroad of New Jersey 132401–2413
Delaware, Lackawanna and Western Railroad 12850861to Erie Lackawanna Railroad 1850–1861
Pennsylvania Railroad 986998707to Penn Central 6700–6708
Reading Company 17800808, 860867
Southern Pacific 1448024815, 4800-4815Renumbered 30203035 in 1965
2 Southern Pacific Train Masters (31191118836).jpg
Southern Railway (CNO&TP)563006304
Virginian Railway 255074to Norfolk and Western Railway 150–174
Wabash Railroad 6552554, 552A554A  Renumbered 552–557
WAB 554 (FM H24-66 aka a Baby Trainmaster) way freight switching at Saunemin, IL on Nov 24, 1962 (22256478439).jpg
Total107  

Units manufactured by the Canadian Locomotive Company (1956)

RailroadQuantityRoad numbersNotes
Canadian Pacific Railway 2089018920  CP 8905 is the only H-24-66 preserved. It can be seen at the Canadian Railway Museum in Saint-Constant, Quebec, Canada.
8901-8904 originally delivered with unique wide short hoods housing dual steam generators, converted to normal hood width when SG's removed.

Preservation

Only one Train Master locomotive has survived intact former Canadian Pacific Railway (CPR) H-24-66 #8905 is now owned by the Canadian Railroad Historical Association, which operates the Canadian Railway Museum in Saint-Constant, Quebec.

Former Virginian Railway Train Masters rebuilt into slugs by the Norfolk and Western Railway survived well into Norfolk Southern service with one currently preserved at the Reading Railroad Heritage Museum in Hamburg, Pennsylvania.

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Further reading