Prototype Information ? The SD90/43MAC is one of today's most powerful locomotives, seen throughout North America on Class I mainline railroads, weighing in at more than 400,000 pounds. With a length in excess of 80 feet, the SD90/43MAC is one of the heaviest and longest single diesel locomotive in the world. The SD80/90MAC series was introduced by EMD in late 1995. To date, there have been three production ''versions'' of the SD90MAC. Union Pacific, by far, operates the largest fleet of SD90MAC units. They have even applied different paint schemes to these units. The production version we have chosen to recreate is the 4,300 horsepower ''SD90/43MAC''. It is equipped with the revolutionary radial truck, the EMD HTCR-II, capable of reducing the angle of wear between wheels and rail. Model Features ?

• The split metal frame mechanism is expected to be ''DCC-friendly'' (designed for easy drop-in installation of decoder).
• Equipped with bright white LED headlights.
• Lighted front-end ditch lights.
• Equipped with KATO automatic magnetic knuckle couplers.
• Printed numberboards (modeler install).
• Powerful KATO five-pole motor with dual brass flywheels and chemically blackened metal wheels.
• While these models are capable of operating on a 9-3/4'' radius curve, it is recommended they be run on curves no smaller than an 11'' radius to prevent the appearance of unrealistic overhang.
• Modeling era: 1995 to present.