{"product_id":"broadway-limited-imports-9913-brass-hybrid-up-early-challenger-csa-2-union-pacific-3835-post-1947-integral-cast-cylinder-front-engine-paragon4-sound-dc-dcc-w-smoke-ho-scale","title":"Broadway Limited Imports 9913 • Brass Hybrid UP Early Challenger (CSA-2) • Union Pacific #3835 • Post-1947 Integral Cast Cylinder Front Engine • Paragon4 Sound\/DC\/DCC w\/ Smoke | HO Scale","description":"\u003cdiv style=\"font-family:Arial,sans-serif; color:#1f2a35; line-height:1.8; max-width:900px; margin:auto; font-size:16px;\"\u003e\n\n  \u003c!-- HERO --\u003e\n  \u003cdiv style=\"background:linear-gradient(135deg,#f4fbfd,#ffffff); border-left:8px solid #45A1BB; padding:28px; margin-bottom:22px; border-radius:12px; box-shadow:0 2px 8px rgba(0,0,0,0.05);\"\u003e\n\n    \u003ch2 style=\"color:#0c07e3; margin:0; font-size:34px; line-height:1.1;\"\u003e\n      Union Pacific Early Challenger CSA-2\n    \u003c\/h2\u003e\n\n    \u003ch3 style=\"color:#45A1BB; margin:6px 0 14px; font-size:24px; font-weight:600;\"\u003e\n      HO Scale Paragon4 Sound\/DC\/DCC Steam Locomotive with Smoke\n    \u003c\/h3\u003e\n\n    \u003cp style=\"margin:0; font-size:17px; line-height:1.8;\"\u003e\n      A powerful Union Pacific 4-6-6-4 Challenger with era-specific detailing, Paragon4 sound, synchronized smoke, and premium Broadway Limited performance.\n    \u003c\/p\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- PRODUCT OVERVIEW --\u003e\n  \u003ch3 style=\"color:#0c07e3; border-bottom:3px solid #45A1BB; padding-bottom:8px; font-size:24px;\"\u003e\n    Product Overview\n  \u003c\/h3\u003e\n\n  \u003cp style=\"font-size:16px; line-height:1.9; margin-bottom:44px;\"\u003e\n    The Union Pacific Challengers were a class of powerful, simple articulated 4-6-6-4 steam locomotives built by the American Locomotive Company for the Union Pacific Railroad. Developed for the railroad’s demanding mountain grades and high-speed freight service, these locomotives represented one of the most important steps forward in articulated steam design.\n    \u003cbr\u003e\u003cbr\u003e\n    Unlike earlier articulated locomotives that were often associated with slower drag freight service, the Challengers were designed to run fast, pull hard, and cover long distances across the Union Pacific system. Their engineering success helped pave the way for the even larger Big Boy locomotives, making the Challenger an essential part of Union Pacific steam history.\n    \u003cbr\u003e\u003cbr\u003e\n    This Broadway Limited Imports Early Challenger CSA-2 represents the post-1947 integral cast cylinder front engine version, giving modelers a highly detailed, era-specific locomotive with exceptional visual presence. With its long articulated frame, massive tender, and powerful 4-6-6-4 profile, this model brings the scale and drama of Union Pacific heavy steam to HO scale.\n    \u003cbr\u003e\u003cbr\u003e\n    Equipped with Broadway Limited’s Paragon4 Sound \u0026amp; Control System, this locomotive delivers immersive operation with synchronized puffing smoke, accurate Union Pacific Challenger sounds, advanced lighting functions, dual DC\/DCC operation, and smooth slow-speed performance. Whether hauling freight across mountain grades or serving as the centerpiece of a Union Pacific steam collection, this Challenger is built to impress.\n  \u003c\/p\u003e\n\n  \u003c!-- PRODUCT FEATURES --\u003e\n  \u003cdiv style=\"background:#eef6fa; border:1px solid #b8dce8; border-left:8px solid #45A1BB; border-radius:12px; padding:28px; margin:0 0 38px 0; box-shadow:0 2px 8px rgba(0,0,0,0.05);\"\u003e\n\n    \u003ch3 style=\"color:#0c07e3; margin-top:0; border-bottom:2px solid #45A1BB; padding-bottom:10px; font-size:24px;\"\u003e\n      Product Features\n    \u003c\/h3\u003e\n\n    \u003cdiv style=\"margin-top:20px; font-size:16px; line-height:1.95;\"\u003e\n\n      \u003cp style=\"margin:0 0 22px; font-size:16px; line-height:1.9;\"\u003e\n        The Union Pacific Challengers were a class of powerful, simple articulated 4-6-6-4 steam locomotives built by the American Locomotive Company (ALCO) exclusively for the Union Pacific Railroad. Between 1936 and 1943, a total of 105 were constructed. Measuring an impressive 122 feet (37 m) in length and weighing 628,000 pounds (284,800 kg), these locomotives were primarily assigned to freight service across the vast Union Pacific system. However, a select few also hauled passenger trains through the rugged mountain territories of California and Oregon.\n      \u003c\/p\u003e\n\n      \u003cp style=\"margin:0 0 22px; font-size:16px; line-height:1.9;\"\u003e\n        Designed specifically for Union Pacific’s demanding operating conditions, the Challengers represented a significant step forward in high-speed articulated locomotive technology. Much of the engineering experience gained from the Challenger program directly influenced the creation of the railroad’s legendary Big Boy locomotives.\n      \u003c\/p\u003e\n\n      \u003cp style=\"margin:0 0 22px; font-size:16px; line-height:1.9;\"\u003e\n        The name “Challenger” refers to the 4-6-6-4 wheel arrangement: four leading wheels in the pilot truck to guide the locomotive through curves, two sets of six driving wheels powered by a total of four steam cylinders, and four trailing wheels supporting the massive firebox. In essence, each Challenger was two engines operating under one boiler. Prior to their introduction, articulated steam locomotives were generally limited to slower speeds due to design constraints. Union Pacific’s technical innovations broke that barrier, making sustained speeds over 60 mph—unheard of for articulated locomotives on other railroads—routine on their main lines.\n      \u003c\/p\u003e\n\n      \u003cp style=\"margin:0 0 22px; font-size:16px; line-height:1.9;\"\u003e\n        In this production run, we are offering multiple era-specific versions: As-Delivered Front Engine, Rebuilt Front Engine, and Integral Cast Cylinder Front Engine. Alongside these historically accurate models, we are also producing three striking fantasy schemes and an unlettered, painted brass version for maximum customization.\n      \u003c\/p\u003e\n\n      \u003cp style=\"margin:0 0 22px; font-size:16px; line-height:1.9;\"\u003e\n        All models are available in two configurations: Paragon4 Sound\/DC\/DCC with Smoke or our Stealth Series—No-Sound, DCC-Ready models with factory-installed speakers. The Stealth Series allows customers to easily install their own 21-pin DCC decoder for a simple “plug-and-play” upgrade.\n      \u003c\/p\u003e\n\n      \u003ch4 style=\"color:#0c07e3; margin:0 0 14px; font-size:20px;\"\u003e\n        Industry-leading Model Features:\n      \u003c\/h4\u003e\n\n      \u003cdiv style=\"margin-bottom:12px; padding-left:22px; position:relative;\"\u003e\n\u003cspan style=\"position:absolute; left:0; color:#45A1BB;\"\u003e•\u003c\/span\u003eALL-NEW Paragon4 Sound \u0026amp; Control System\u003c\/div\u003e\n      \u003cdiv style=\"margin-bottom:12px; padding-left:22px; position:relative;\"\u003e\n\u003cspan style=\"position:absolute; left:0; color:#45A1BB;\"\u003e•\u003c\/span\u003eSynchronized Puffing Smoke with Chuff Sound\u003c\/div\u003e\n      \u003cdiv style=\"margin-bottom:12px; padding-left:22px; position:relative;\"\u003e\n\u003cspan style=\"position:absolute; left:0; color:#45A1BB;\"\u003e•\u003c\/span\u003eVariable Puffing Smoke Intensity and timing\u003c\/div\u003e\n      \u003cdiv style=\"margin-bottom:12px; padding-left:22px; position:relative;\"\u003e\n\u003cspan style=\"position:absolute; left:0; color:#45A1BB;\"\u003e•\u003c\/span\u003eIntegral DCC Decoder with Back EMF for Industry-Best Slow Speed Operation in DC and DCC\u003c\/div\u003e\n      \u003cdiv style=\"margin-bottom:12px; padding-left:22px; position:relative;\"\u003e\n\u003cspan style=\"position:absolute; left:0; color:#45A1BB;\"\u003e•\u003c\/span\u003ePrecision Drive Mechanism engineered for continuous heavy load towing and smooth slow speed operation\u003c\/div\u003e\n      \u003cdiv style=\"margin-bottom:12px; padding-left:22px; position:relative;\"\u003e\n\u003cspan style=\"position:absolute; left:0; color:#45A1BB;\"\u003e•\u003c\/span\u003e5-Pole Can Motor with Skew Wound Armature\u003c\/div\u003e\n      \u003cdiv style=\"margin-bottom:12px; padding-left:22px; position:relative;\"\u003e\n\u003cspan style=\"position:absolute; left:0; color:#45A1BB;\"\u003e•\u003c\/span\u003eHand crafted Brass Boiler, Tender Body, and diecast Chassis for maximum Tractive Effort\u003c\/div\u003e\n      \u003cdiv style=\"margin-bottom:12px; padding-left:22px; position:relative;\"\u003e\n\u003cspan style=\"position:absolute; left:0; color:#45A1BB;\"\u003e•\u003c\/span\u003ePrototypically Accurate Details for Each Road Number\u003c\/div\u003e\n      \u003cdiv style=\"margin-bottom:12px; padding-left:22px; position:relative;\"\u003e\n\u003cspan style=\"position:absolute; left:0; color:#45A1BB;\"\u003e•\u003c\/span\u003eMany Separately Applied Details such as Handrails, Ladders, Piping, Cab Glass, Whistle, Brass Bell, Markers, Numberboards, Air Tanks, and Many Others\u003c\/div\u003e\n      \u003cdiv style=\"margin-bottom:12px; padding-left:22px; position:relative;\"\u003e\n\u003cspan style=\"position:absolute; left:0; color:#45A1BB;\"\u003e•\u003c\/span\u003ePremium Caliber Painting with Authentic Paint Schemes\u003c\/div\u003e\n      \u003cdiv style=\"margin-bottom:12px; padding-left:22px; position:relative;\"\u003e\n\u003cspan style=\"position:absolute; left:0; color:#45A1BB;\"\u003e•\u003c\/span\u003ePrototypical Light Operation with Separately Controllable Headlight, Reverse Light, Cab Light, Front Numberboards, Rear Marker Light\u003c\/div\u003e\n      \u003cdiv style=\"margin-bottom:12px; padding-left:22px; position:relative;\"\u003e\n\u003cspan style=\"position:absolute; left:0; color:#45A1BB;\"\u003e•\u003c\/span\u003eFactory-installed Engineer and Fireman Figures\u003c\/div\u003e\n      \u003cdiv style=\"margin-bottom:12px; padding-left:22px; position:relative;\"\u003e\n\u003cspan style=\"position:absolute; left:0; color:#45A1BB;\"\u003e•\u003c\/span\u003eTwo operating Kadee-compatible couplers.\u003c\/div\u003e\n      \u003cdiv style=\"margin-bottom:12px; padding-left:22px; position:relative;\"\u003e\n\u003cspan style=\"position:absolute; left:0; color:#45A1BB;\"\u003e•\u003c\/span\u003eEquipped with Rubber Traction Tires for Increased Pulling Power\u003c\/div\u003e\n      \u003cdiv style=\"margin-bottom:12px; padding-left:22px; position:relative;\"\u003e\n\u003cspan style=\"position:absolute; left:0; color:#45A1BB;\"\u003e•\u003c\/span\u003eWill Operate on Code 70, Code 83, and Code 100 Rail\u003c\/div\u003e\n      \u003cdiv style=\"margin-bottom:12px; padding-left:22px; position:relative;\"\u003e\n\u003cspan style=\"position:absolute; left:0; color:#45A1BB;\"\u003e•\u003c\/span\u003eRecommended Minimum Radius: 22 inches\u003c\/div\u003e\n      \u003cdiv style=\"margin-bottom:22px; padding-left:22px; position:relative;\"\u003e\n\u003cspan style=\"position:absolute; left:0; color:#45A1BB;\"\u003e•\u003c\/span\u003eAccurate Prototypical Sounds for the Union Pacific Early Challenger\u003c\/div\u003e\n\n      \u003cp style=\"margin:0 0 22px; font-size:16px; line-height:1.9;\"\u003e\n        Broadway Limited Imports is proud to introduce Paragon4: The new benchmark for premium HO sound-equipped locomotives. These DC and DCC-Sound equipped locomotives feature the ALL-NEW Paragon4 sound and control system. Each Paragon4 locomotive comes with BLI's own integral DCC Decoder factory installed. Paragon4 locomotives offer Dual Mode DC and DCC operation with superb back EMF motor control, improved DC motor control, built-in capacitor pack for more reliable electrical pick-up, industry best on-board sound with Rolling Thunder functionality, Pro Lighting Mode for prototypical light control, Switcher model for precise low speed control, recordable DCC operation for automated playback, and the same excellent detail level as Broadway Limited's Paragon3 Series models.\n      \u003c\/p\u003e\n\n      \u003ch4 style=\"color:#0c07e3; margin:0 0 14px; font-size:20px;\"\u003e\n        Paragon4 Sound \u0026amp; Control System Features:\n      \u003c\/h4\u003e\n\n      \u003cdiv style=\"margin-bottom:12px; padding-left:22px; position:relative;\"\u003e\n\u003cspan style=\"position:absolute; left:0; color:#45A1BB;\"\u003e•\u003c\/span\u003eOperates in DC \u0026amp; DCC with improved DC speed control (use DCMaster for DC Sound)\u003c\/div\u003e\n      \u003cdiv style=\"margin-bottom:12px; padding-left:22px; position:relative;\"\u003e\n\u003cspan style=\"position:absolute; left:0; color:#45A1BB;\"\u003e•\u003c\/span\u003eBuilt-In capacitor pack to navigate imperfect track\u003c\/div\u003e\n      \u003cdiv style=\"margin-bottom:12px; padding-left:22px; position:relative;\"\u003e\n\u003cspan style=\"position:absolute; left:0; color:#45A1BB;\"\u003e•\u003c\/span\u003eCapacitor Pack automatically disabled on program track for full compatibility with JMRI Decoder Pro\u003c\/div\u003e\n      \u003cdiv style=\"margin-bottom:12px; padding-left:22px; position:relative;\"\u003e\n\u003cspan style=\"position:absolute; left:0; color:#45A1BB;\"\u003e•\u003c\/span\u003ePro Lighting Mode offers individual control of all lights on model\u003c\/div\u003e\n      \u003cdiv style=\"margin-bottom:12px; padding-left:22px; position:relative;\"\u003e\n\u003cspan style=\"position:absolute; left:0; color:#45A1BB;\"\u003e•\u003c\/span\u003eSwitcher Mode for precise low speed control.\u003c\/div\u003e\n      \u003cdiv style=\"margin-bottom:12px; padding-left:22px; position:relative;\"\u003e\n\u003cspan style=\"position:absolute; left:0; color:#45A1BB;\"\u003e•\u003c\/span\u003eRecord \u0026amp; Play Operation - Records and plays back sounds and movements once or repeatedly for automatic operation\u003c\/div\u003e\n      \u003cdiv style=\"margin-bottom:12px; padding-left:22px; position:relative;\"\u003e\n\u003cspan style=\"position:absolute; left:0; color:#45A1BB;\"\u003e•\u003c\/span\u003eHigh Resolution Audio\u003c\/div\u003e\n      \u003cdiv style=\"margin-bottom:12px; padding-left:22px; position:relative;\"\u003e\n\u003cspan style=\"position:absolute; left:0; color:#45A1BB;\"\u003e•\u003c\/span\u003eQuillable Whistle for various whistle lengths and patterns\u003c\/div\u003e\n      \u003cdiv style=\"margin-bottom:12px; padding-left:22px; position:relative;\"\u003e\n\u003cspan style=\"position:absolute; left:0; color:#45A1BB;\"\u003e•\u003c\/span\u003eChoice of 3 selectable whistles\u003c\/div\u003e\n      \u003cdiv style=\"margin-bottom:12px; padding-left:22px; position:relative;\"\u003e\n\u003cspan style=\"position:absolute; left:0; color:#45A1BB;\"\u003e•\u003c\/span\u003eAlternate Whistle \/ Horn where applicable for locomotive with air horn and steam whistle - both the main whistle and alternate can be easily played\u003c\/div\u003e\n      \u003cdiv style=\"margin-bottom:12px; padding-left:22px; position:relative;\"\u003e\n\u003cspan style=\"position:absolute; left:0; color:#45A1BB;\"\u003e•\u003c\/span\u003eAdjustable bell ringing interval for faster or slower bell\u003c\/div\u003e\n      \u003cdiv style=\"margin-bottom:12px; padding-left:22px; position:relative;\"\u003e\n\u003cspan style=\"position:absolute; left:0; color:#45A1BB;\"\u003e•\u003c\/span\u003eNumerous user-mappable functions with available keys\u003c\/div\u003e\n      \u003cdiv style=\"margin-bottom:12px; padding-left:22px; position:relative;\"\u003e\n\u003cspan style=\"position:absolute; left:0; color:#45A1BB;\"\u003e•\u003c\/span\u003eJohnson Bar Sound at Direction Change\u003c\/div\u003e\n      \u003cdiv style=\"margin-bottom:12px; padding-left:22px; position:relative;\"\u003e\n\u003cspan style=\"position:absolute; left:0; color:#45A1BB;\"\u003e•\u003c\/span\u003eMultiple realistic passenger and crew sounds play on command\u003c\/div\u003e\n      \u003cdiv style=\"margin-bottom:12px; padding-left:22px; position:relative;\"\u003e\n\u003cspan style=\"position:absolute; left:0; color:#45A1BB;\"\u003e•\u003c\/span\u003eGrade Crossing Automatic Signal\u003c\/div\u003e\n      \u003cdiv style=\"margin-bottom:12px; padding-left:22px; position:relative;\"\u003e\n\u003cspan style=\"position:absolute; left:0; color:#45A1BB;\"\u003e•\u003c\/span\u003eAutomatic Forward \/ Reverse Signal - When activated, stopping triggers and stop whistle toot. When moving forward from a stopped position, toots twice. When moving in reverse. toots three times.\u003c\/div\u003e\n      \u003cdiv style=\"margin-bottom:12px; padding-left:22px; position:relative;\"\u003e\n\u003cspan style=\"position:absolute; left:0; color:#45A1BB;\"\u003e•\u003c\/span\u003eChuff sound intensity varies with load\u003c\/div\u003e\n      \u003cdiv style=\"margin-bottom:12px; padding-left:22px; position:relative;\"\u003e\n\u003cspan style=\"position:absolute; left:0; color:#45A1BB;\"\u003e•\u003c\/span\u003eIndividually adjustable sound volumes for each effect\u003c\/div\u003e\n      \u003cdiv style=\"padding-left:22px; position:relative;\"\u003e\n\u003cspan style=\"position:absolute; left:0; color:#45A1BB;\"\u003e•\u003c\/span\u003eEZ Reset Button for quick return to factory default settings\u003c\/div\u003e\n\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- WHY WE LOVE IT --\u003e\n  \u003cdiv style=\"background:#eef6fa; border:1px solid #b8dce8; border-left:8px solid #45A1BB; border-radius:12px; padding:28px; margin:38px 0; box-shadow:0 2px 8px rgba(0,0,0,0.05);\"\u003e\n\n    \u003ch3 style=\"color:#0c07e3; margin-top:0; font-size:24px;\"\u003e\n      Why We Love This Model\n    \u003c\/h3\u003e\n\n    \u003cp style=\"margin-bottom:0; font-size:16px; line-height:1.9;\"\u003e\n      The Union Pacific Challenger is one of the most impressive steam locomotives ever built, and this Broadway Limited model captures the scale, power, and mechanical complexity that made the prototype so legendary. The Early Challenger design bridges the gap between classic articulated steam and the later Big Boy era, making it a fascinating centerpiece for Union Pacific modelers.\n      \u003cbr\u003e\u003cbr\u003e\n      What makes this model especially exciting is the combination of era-specific detailing and Paragon4 technology. The brass boiler and tender body, diecast chassis, synchronized smoke, accurate sounds, and advanced lighting features all work together to create a premium operating experience. It looks massive, sounds powerful, and performs with the kind of smooth control that makes heavy steam especially satisfying to run.\n    \u003c\/p\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- CTA --\u003e\n  \u003cdiv style=\"background:linear-gradient(90deg,#0c07e3,#2D8DAA); color:white; padding:24px 28px; border-radius:12px; margin-top:36px; box-shadow:0 2px 8px rgba(0,0,0,0.08);\"\u003e\n\n    \u003ch3 style=\"margin-top:0; margin-bottom:10px; color:white; font-size:24px;\"\u003e\n      Bring Union Pacific Heavy Steam to Your Layout\n    \u003c\/h3\u003e\n\n    \u003cp style=\"margin-bottom:0; font-size:16px; line-height:1.8;\"\u003e\n      With its powerful 4-6-6-4 profile, era-specific details, synchronized smoke, premium sound, and advanced Paragon4 control system, this Union Pacific Early Challenger is a standout locomotive for collectors and operators who want true mainline steam presence in HO scale.\n    \u003c\/p\u003e\n\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Broadway Limited Imports","offers":[{"title":"Default Title","offer_id":49499218804874,"sku":"9913","price":849.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0685\/3954\/7786\/files\/Challenger_9ea54aff-469e-4d90-9a9b-3f8475b06674.png?v=1780581302","url":"https:\/\/denvertrains.com\/products\/broadway-limited-imports-9913-brass-hybrid-up-early-challenger-csa-2-union-pacific-3835-post-1947-integral-cast-cylinder-front-engine-paragon4-sound-dc-dcc-w-smoke-ho-scale","provider":"Denver Model Trains      ","version":"1.0","type":"link"}