![]() ![]() Union Pacific w/PTC 8818 (Yellow/Gray/Red) Union Pacific w/PTC 8810 (Yellow/Gray/Red) Norfolk Southern w/PTC 1164 (Black/White) Norfolk Southern w/PTC 1145 (Black/White) Union Pacific w/PTC (No Flag) 8679 (Yellow/Gray/Red) Montana Rail Link (Essential Workers) 4404 (Blue/Red/White) Kansas City Southern (Essential Workers) 4009 (Red/Yellow/Black) Proto-Sound 3.0 With The Digital Command System FeaturingĬheck availability of this product on the Atlas Online Store 3-Rail Item#Ĭanadian National (Grand Trunk Heri tage) 8952 (Blue/Red)Ĭanadian National (IPO 25 Years) 8898 (Black/Red)Ĭanadian Pacific (Army Green Military Pride) 7020 (Green/Black)Ĭanadian Pacific (Air Force Military Pride) 7023 (Gray/Black)Ĭanadian Pacific (WWII Military Pride) 6644 (Green/White/Black). ![]() Proto-Scale 3-2 3-Rail/2-Rail Conversion Capable.Locomotive Speed Control In Scale MPH Increments.Directionally Controlled Constant voltage LED Headlights.O Scale Kadee-Compatible Coupler Mounting Pads.Die-Cast Truck Sides, Pilots and Fuel Tank.AC-powered locomotives are both more expensive and more electrically complex than engines with DC traction motors, which most diesels have used since the 1940s. While AC traction motors put more tractive effort on the rails and enable an SD70ACe to start a heavier train with the same horsepower, that additional capability comes at a cost. The key difference between the SD70M-2 and the SD70ACe is what’s under the floor: traditional DC traction motors in the SD70M-2’s trucks and AC traction motors in the SD70ACe. Digital screens provide a range of information on what is happening both inside the locomotive and out on the road. The engines’ angular nose offers the crew far better visibility than most other locomotives, and the cab is comfortable for engineers of almost any size and accommodates a crew of three - an important factor in a modern world without cabooses. Other than the prime mover, however, virtually every element of these engines has been re-thought to create a 21st century locomotive. With 5000 such motors in service worldwide and a reputation for dependability, EMD reasoned that shop crews would prefer familiar technology. Under the hood of both engines beats a third-generation model 710 diesel with 4300 horsepower only slight modifications were needed to make the model 710 meet new emission standards. While designed to meet the Environmental Protection Agency’s Tier-2 emissions requirements that took effect on January 1, 2005, they also have a higher purpose: to recapture the lead in North American locomotive sales that EMD lost to General Electric in 1987. The DC-motored SD70M-2 and AC-motored SD70ACe are EMD’s hope for the future. ![]()
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