Discover the legendary Broadway Limited N Scale Challenger 4-6-6-4 articulated steam locomotive, an iconic Union Pacific powerhouse now available with advanced Paragon4 DCC sound system. This precision-engineered model recreates one of the most powerful and technically innovative steam locomotives ever built, featuring realistic operation, exceptional detail, and authentic prototypical sounds. The Challenger represented a revolutionary leap in steam locomotive technology during the 1930s-1940s era, becoming the benchmark for high-speed freight hauling across American railroads.

Broadway Limited's meticulous reproduction captures every aspect of these legendary locomotives, from their distinctive double-articulated design to their impressive 4-6-6-4 wheel configuration. Built between 1936 and 1944 by American Locomotive Company (ALCO), Union Pacific operated 105 Challengers across five classes, each measuring 122 feet in length and weighing 537 short tons. These remarkable machines operated at high boiler pressures of 280 PSI and featured massive 69-inch drivers characteristic of passenger locomotives rather than freight engines. The Challenger's ability to exceed 60 miles per hour set new standards for articulated locomotives, making it a favorite among railroad historians and model railroaders. Originally diverted to Denver and Rio Grande Western (D&RGW) and later operating as Clinchfield Class E-3 locomotives, surviving examples including UP No. 3977 and restored No. 3985 continue to inspire enthusiasts worldwide.

- Paragon4 Sound & DCC Control System with ROLLING THUNDER technology for authentic steam locomotive sounds
- N Scale 4-6-6-4 Articulated Steam Locomotive replica of Union Pacific Late Challenger class
- Dual-Mode DC and DCC operation with integral Paragon4 decoder and Back EMF control
- Operating smoke unit with on/off switch (requires N-scale smoke fluid like JT's Mega Steam)
- All-wheel electrical pickup including six drivers and tender wheels for reliable performance
- Die-cast locomotive body and chassis providing maximum weight and tractive effort
- Rubber tires on two drivers for authentic operation and enhanced pulling power
- Premium-quality painting with prototypically accurate Union Pacific, D&RGW, or Clinchfield schemes
- Separately applied details including handrails, grab irons, piping, tender ladders, whistle, and bell
- Prototypical LED headlight and rear light operation with separately controllable cab light
- Professional-grade Paragon4 decoder with record and playback automation functions
- Microtrains-compatible couplers for seamless consist operation and layout switching
- Compatible with Code 55, Code 70, and Code 80 model railroad track standards
- Minimum operating radius of 9.75 inches for realistic layout integration
- Pro Lighting Mode for individual control of all locomotive and tender lights
- Switcher Mode for precise low-speed shunting and yard operations
- Multiple horn choices with quillable whistle for prototypical sound effects
- Adjustable bell ringing intervals and prime mover sound intensity varying with load
- User-mappable functions with comprehensive DCC programming capabilities
- DCC-Ready stealth versions available without sound for decoder customization