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 type Diesel-electric Builder Lima Locomotive Works Model A-3149 (LS-750) A-3171 (LS-800) Build date November 1949 – June 1951 Total produced LS-750: 6 LS-800: 23
Specifications Configuration: ​  • AAR B-B  • UIC Bo′Bo′ Gauge 4 ft 8 1⁄2 in (1,435 mm) Prime mover Hamilton T69SA Engine type 4-stroke diesel Aspiration Turbocharged Displacement 4,580 cu in (75.1 l) Cylinders Inline 6 Cylinder size 9 in × 12 in (229 mm × 305 mm) Transmission DC generator, DC traction motors Loco brake Straight air Train brakes Air
Performance figures Power output 750 hp (559 kW) or 800 hp (597 kW)
Career Locale United States

All six LS-750s 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.