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Bring the power of today's railroading to your HO layout with WalthersMainline SD70ACe diesels! Starting with the SD70 introduced in 1992, the prototype underwent a number of upgrades and in 2005 the more powerful SD70ACe was unveiled with AC traction motors. Today, these colorful locos can be found on the rosters of lines big and small. Nicely detailed, affordably priced and available with ESU(R) for DCC and DC layouts, additional features include: Limited edition - one time run of these roadnumbers! Model today's railroading at WalthersMainline prices One of the backbones of contemporary loco fleets Prototypes in service 2005 to the present Easily handles 18" radius curves (22" or larger recommended) Factory-equipped with ESU Sound & DCC 4 function outputs with brightness control by CV Fully DCC compatible 14, 28, 128 speed steps Dual mode DC/DCC 4 air horns changeable by CVs 2 bells changeable by CVs Full 8 notch prime mover sounds Compressor Dynamic brake Multiple realistic lighting effects LED Lighting High or low headlight per prototype Working front ditch lights Constant and directional lights Fully assembled 5-pole skew-wound motor 14:1 gear ratio Helical-cut gears for quiet operation and easy multiple unit operation All-wheel drive and electrical pickup Dual machined brass flywheels Heavy die-cast metal chassis Molded drill starter points for grab irons - easily added with SD70ACe Diesel Detail Kit (#910-251, sold separately) RP-25 metal wheels Proto MAX(TM) metal knuckle couplers