Union Pacific O Scale Premier SD24 Diesel Engine - With Proto-Sound 2.0

In 1958, GM's Electro-Motive Division took a great technological stride forward with the introduction of the turbo-charged SD24. In turbocharged engines, exhaust gases are used to increase cylinder air pressure, thus effectively increasing horsepower. In fact, an engine that produced 1800 horsepower when normally aspirated could produce 2400 horsepower when turbocharged. In addition to the extra power, turbocharged engines run well at different altitudes, which makes them ideal for railroads that travel varied terrain. The SD24s were close relatives of the popular GP-series engines. They had similar horsepower and the same style body. The primary difference was that SD-series (for "Special Duty") engines were lengthened to make room for three-axle, three-motor trucks. These extra wheels gave SD engines more tractive effort and distributed their weight more widely than did GPs. For this reason, the SD24 and others in the series were ideally suited for secondary lines with lighter rail. M.T.H. is proud to introduce this landmark engine in our Premier line. It is available in the markings of the Burlington, Great Northern, Southern, and Union Pacific railroads and comes with an impressive set of features.

- Directionally Controlled Headlights - Metal Wheels and Axles - Die-Cast Truck Sides, Pilots and Fuel Tank - (2) Remotely Controlled Proto-Couplersr - Authentic Paint Scheme - Metal Handrails and Decorative Horn - All Metal Wheels and Gears - Illuminated Number Boards - Lighted Marker Lights - Spinning Roof Fans - Metal Body Side Grills - Lighted Cab Interior - (2) Precision Flywheel Equipped Motors - Locomotive Speed Control - (2) Engineer Cab Figures - Operating Smoke Unit - Intricately Detailed ABS Body - Metal Chassis - Operates On O-42 Track Proto-Sound 2.0 With The Digital Command System Featuring:- Freight Yard Proto-Effects Unit Measures:15 3/8" x 2 5/8" x 4"