Athearn #G27253 SD90MAC UP #3705

UP FEATURES • As renumbered to 3470-3775 in 2012 • 3681 as repainted with flag June 2015 • EOTD holder between starter capacitor box and fuel gauge • Front only ditch lights mounted on pilot face • Both Cab door options with and without window • Union Pacific specific cab antennas Union Pacific was the largest buyer of the SD90MAC with 309 units total the railroad designation was SD9043AC as they were delivered with the 710G engine rated at 4300hp. Taking delivery of the first locomotives in 1995 and the last in 1999 originally numbered in the 8000 series these locomotives were renumbered in 2012 and some are still on UP’s roster. 3681 is one of only a few SD90MACs to receive the flag paint scheme. SD90MAC SERIES LOCOMOTIVE FEATURES • Brand new model previously only available in brass • Fully-assembled and ready-to-run • DCC-ready features Quick Plug™ plug-and-play technology with 21-pin NEM connector • Accurately-painted and –printed paint schemes • Scaled from prototype resources including drawings photographs and more • Coupler cut levers • Rubber MU hoses • Trainline hose • See through cab windows • Full cab interior • Walkway tread • Windshield wipers • Lift rings • Wire grab irons • Sander lines • Fine-scale Celcon handrails for scale appearance • Detailed fuel tank with fuel fillers fuel gauges & breather pipes • McHenry® scale knuckle couplers – Kadee® compatible • Genesis driveline with 5-pole skew wound motor and precision machined flywheels • All-wheel drive with precision gears for smooth & quiet operation • All-wheel electrical pickup provides reliable current flow • Wheels with RP25 contours operate on all popular brands of track • LED Lighting for realistic appearance • Heavy die-cast frame for greater traction and more pulling power • Packaging securely holds for the model for safe storage GENESIS 2.0 FEATURES By integrating and pioneering some of the latest model advancements in the industry Athearn is redefining model fidelity with Genesis 2.0 • Etched see-through walkway steps • Illuminated number boards • Illuminated ground lights • DCC+Sound models feature dual Sugarcube speakers for optimal sound quality PROTOTYPE SPECIFIC INFORMATION Introduced in 1995 the EMD SD90MAC was intended to become that builder’s most-powerful single-engine diesel locomotive. The new locomotive was to use EMD’s newly-developed 265H prime mover featuring 6000 horsepower. However this engine was experiencing technical problems in development which led to the first groups of locomotives being delivered with the EMD 710G prime mover of 4300 horsepower (the intent being to retrofit these with the more-powerful 265H at a later date). Ironically the technical problems with the 265H were never fully resolved and no conversions were done. The 710G-engined SD90MACs outlasted their later 265H cousins in service by a wide margin with some units only recently having been retired or sold by Union Pacific and other railroads choosing to rebuild them for continued service. The Athearn Genesis 2.0 SD90MAC features all of the cutting-edge detail and operational features that are expected by discerning modelers Working number boards and ground lights see-through steps numerous separatelyapplied details on the body and underframe and a heavy die-cast frame for massive pulling power.