Athearn Genesis 98975 - HO 4-6-6-4 Steam Challenger - DCC & Sound - Union Pacific #3997

HO 4-6-6-4 Steam Challenger - DCC & Sound - Union Pacific (TTG) #3997 Detailed Information Union Pacific In the spring of 1941 UP locomotive designers began working on a locomotive to team up with the new 4-8-8-4 Big Boys then under construction at Alco. The Big Boys were designed to pull heavy freights up the Wasatch Range in Utah to the division point at Green River, WY. What was needed was a locomotive to take over at that point that could speed the freights eastward across the Wyoming Division. Building on their experience with the original CSA 4-6-6-4 Challengers UP and Alcos designers developed a newer and better Challenger type locomotive. The result was a group of 65 4-6-6-4 Challenger built in three separate groups during World War II. ROAD NUMBER SPECIFIC FEATURES: #3985 Modern Excursion version Oil Burner Era 1980s - 2000s #3933 Coal Burner Dual smoke stack Tender bunker coal extensions Era 1940s - 1959 #3967 Coal Burner Dual smoke stack Smoke Lifters Era 1940s - 1959 #3997 Coal Burner Dual smoke stack Tender bunker coal extensions Era 1940s - 1959 UP painted several of their Challengers in their two-tone grey paint scheme for passenger service. They also added smoke lifters and converted many to oil burners as well. ROAD NUMBER SPECIFIC FEATURES: #3976 Two-tone grey w/ yellow lettering and striping. Oil burner Dual smoke stack. Era: Late 1940s - Mid-1950s. STEAM LOCOMOTIVE FEATURES: Illuminated number boards and headlights Headlight turns off in reverse Illuminated directional back-up light in the tender Correctly operating eccentric cranks Adjustable top cab vent and cab windows Pivoting front and rear engines for negotiating 18inch radius curves Current pick-up on all driver and wheels Boiler backhead with full details and printed gauges Synchronized chuff, whistle, bell, blow-down, air compressor, dyno and pop-off valve sounds User-controlled whistle, short whistle, bell, squeal, coupler crash, injector, water stop and light dimmer Individually-applied detail parts, including brass-painted bell and whistle, piping, valves, generator, steps, air pump, air tanks, reverser and coupler lift bar Front coupler pocket can be inserted to mount operating coupler Minimum recommended radius: 22inch NEW FEATURES: Dual cube speakers for great sound quality Lighted firebox flicker effect with see-through firebox door Upgraded headlight lighting with brighter LED Improved loco-to-tender connection harness for increased durability and serviceability SOUND EQUIPPED MODELS ALSO FEATURE Tender-mounted DCC decoder with SoundTraxx Tsunami2 sound Sound units operate in both DC and DCC Full DCC functions available when operated in DCC mode Engine, whistle, and bell sounds work in DC All functions NMRA compatible in DCC mode Excellent Slow speed control Many functions can be altered via Configuration Value (CV) changes CV chart included in the box