HO SD40T-2 Locomotive with DCC and Sound UP #2929 (ATH73142)

HO-scale SD40T-2 Locomotive with DCC and Sound in Union Pacific livery, numbered 2929. This ready-to-run model captures UP’s late-1990s SP-era tunnel-motor fleet and includes an onboard DCC decoder with Tsunami2 sound for authentic operation on HO layouts.

UP-specific details include an 88-inch nose with brake wheel, cab-mounted air conditioning, front ditch lights, a UP-style front plow, and a modified front window. The model also features fine-scale handrails, etched windshield wipers, see-through dynamic brake fans and radiator grilles, plus separately applied air tanks, wire grab irons, and rubber MU hoses with silver ends. It rides on six axles with all-wheel drive, powered by a 5-pole motor with flywheels and RP25-contour wheels, and is DCC-ready with a 21-pin NEM Quick Plug. LED lighting, McHenry operating scale knuckle couplers, and a fully assembled, painted and decorated body add realism, with a 22" minimum radius recommended for operation. The prototype history notes that the SD40T-2 is a six-axle, 3,000 horsepower diesel-electric known as a tunnel motor, designed for better cooling in tunnels, a detail reflected in this faithful model, including the ability to run sound in both DC and DCC modes and full DCC functionality through CV adjustments.