Lima 750 and 800 hp switchers

The Lima 750 and 800 hp switchers were diesel-electric switching locomotives built between November 1949 and June 1951, by Lima Locomotive Works of Lima, Ohio, U.S.A.. The LS-750 is a 750 horsepower (560 kW) switcher. It was later upgraded to 800 hp (600 kW) by changing fuel rack settings. Both models used the same turbocharged Hamilton T-69-SA four-stroke, six cylinder inline diesel engine, a Westinghouse generator and 4 Westinghouse traction motors.

Lima LS-750 and LS-800
Cincinnati Union Terminal railroad number 25, a Lima LS-750 (A-3149)
Type and origin
Power typeDiesel-electric
BuilderLima Locomotive Works
ModelA-3149 (LS-750)
A-3171 (LS-800)
Build dateNovember 1949 – June 1951
Total producedLS-750: 6
LS-800: 23
Specifications
Configuration:
​
 • AARB-B
 • UICBo′Bo′
Gauge4 ft 8 1⁄2 in (1,435 mm)
Prime moverHamilton T69SA
Engine type4-stroke diesel
AspirationTurbocharged
Displacement4,580 cu in (75.1 l)
CylindersInline 6
Cylinder size9 in × 12 in (229 mm × 305 mm)
TransmissionDC generator,
DC traction motors
Loco brakeStraight air
Train brakesAir
Performance figures
Power output750 hp (559 kW) or
800 hp (597 kW)
Career
LocaleUnited States

All six LS750s were sold to a single railroad, with two being sold after the LS-800 had been introduced. The 23 LS-800s were sold to just two railroads.

Lima-Hamilton did not assign model numbers to their models but referred to them by specification numbers. Model designations such as LS-750 or LS-800 were a railfan invention. Lima-Hamilton assigned A-3149 as the specification number for the 750 hp model, and A-3171 as the specification number for the 800 hp model.

Original owners

LS-750
RailroadQtyRoad NumbersNotes
Cincinnati Union Terminal (Whitewater Valley Railroad)
6
20–25

LS-800
RailroadQtyRoad NumbersNotes
Chicago, Rock Island and Pacific Railroad
2
800–801
Chicago River and Indiana Railroad
(subsidiary of New York Central Railroad)
21
9800–9820

Preservation

The last extant LS750, former Cincinnati Union Terminal 25, is operated by the Whitewater Valley Railroad

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References
  • Kirkland, John F. (November 1985). The Diesel Builders Volume 1: Fairbanks-Morse and Lima-Hamilton. Interurban Press. ISBN 0-916374-69-6.
  • "The Yard Limit - Lima". Retrieved March 9, 2009.



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