Guaranteed Pre-Order Deadline is TBA
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Estimated Delivery Date Is: February 2028
Product Information:
Athearn Genesis HO 4-6-6-4 CSA-2 Challenger Locomotive with Tsunami2 DCC & Sound, UP #3938
PROTOTYPE SPECIFIC INFORMATION
ALCO constructed the first 4-6-6-4 locomotives in the world, numbered 3900 to 3914, for the Union Pacific Railroad in 1936. These huge engines were named the Challenger Simple Articulated, or CSA-1, class. The railroad received 25 near copies, classified as CSA-2, the following year.
Unlike compound Mallet engines that crawled along with drag freights, the Challengers had two sets of high- pressure cylinders and could safely reach passenger train speeds. The mammoth locomotives also had a heavy-duty starting tractive effort of 97,400 pounds.
Originally constructed to haul fast freight up the famous Wasatch grade, the CSA-1 and -2 Challengers would hold a variety of assignments over their long careers- including passenger service. Depending upon their operating territory, they burned either coal or oil, and some locos were converted back- and-forth several times.
ROAD NUMBER SPECIFIC FEATURES:
- #3820 Class CSA-2, Worthington feedwater heater, large sand dome, covered vertical bar pilot, walkway “hump”, no steam pipe to front cylinders, blackened metal side rods, satin paint finish, oil burner. Era 1940s+
- #3823 Class CSA-2, Elesco feedwater heater, large sand dome, covered vertical bar pilot, walkway “hump”, no steam pipe to front cylinders, blackened metal side rods, satin paint finish, oil burner. Era 1940s+
- #3907 Class CSA-1, Worthington feedwater heater, standard sand dome, boiler-tube pilot with wide handrails, no walkway “hump”, steam pipe to front cylinders, blackened metal side rods, satin paint finish, coal burners. Era 1936+
- #3911 Class CSA-1, Worthington feedwater heater, standard sand dome, boiler-tube pilot with wide handrails, no walkway “hump”, steam pipe to front cylinders, blackened metal side rods, satin paint finish, coal burners. Era 1936+
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 18” 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
- Dual cube speakers for great sound quality
- Upgraded headlight lighting with brighter LED
- Improved loco-to-tender connection harness for increased durability and serviceability
- Minimum recommended radius: 22”
SOUND-EQUIPPED MODELS ALSO FEATURE:
- Tender-mounted DCC decoder with SoundTraxx Tsunami2 sound
- Dual cube speakers for optimal sound quality
- 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
- Precision slow speed control
- Program a multiple unit (MU) lashup with lead unit only horn, bell, and lights
- Many functions can be altered via Configuration Value (CV) changes
- CV chart included in the box
