The Union Pacific Challengers were a type of simple articulated 4-6-6-4 steam locomotive built by American Locomotive Company for the Union Pacific. 105 of these locomotives were built between 1936 and 1943.
The Challengers were about 122 ft (37 m) long and weighed 284,800 kg. A few were assigned to passenger trains operating through mountain territory to California and Oregon. The locomotives were built specifically for UP and much of the experience gained later went into the design of the famous Big Boy.
The name Challenger was given to steam locomotives with a 4-6-6-4 wheel arrangement. This means that they have four wheels in the leading pilot truck, which helps guide the locomotive into curves, two sets of six driving wheels, and finally four trailing wheels, which support the rear of the engine and its massive firebox. Each set of six driving wheels is driven by two steam cylinders.
In essence, the result is two engines under one boiler. The Union Pacific Railroad sponsored development of this type to meet the need for higher speeds in main-line service. Historically, articulated locomotives had been limited to slow speeds by factors inherent in their design.
The technical breakthroughs achieved with the Challenger enabled the carrier to develop the Big Boy with the same speed expectations. Speeds in excess of 60 M. While unheard-of on other railroads using articulated steam locomotives, became commonplace on the Union Pacific. NEW Paragon3 Sound & Operation System FEATURING ROLLING THUNDERTM with Authentic Sounds and Prototypical Operation in both DC and DCC environments. Synchronized PUFFING SMOKE with Chuff Sound.Variable Puffing Smoke Intensity and timing. Integral DCC Decoder with Back EMF for Industry Best Slow Speed Operation in DC and DCC. Precision Drive Mechanism engineered for continuous heavy load towing and smooth slow speed operation. Powerful High Torque Motor with Fly Wheel.
Premium Caliber Painting with Authentic Paint Schemes. Prototypical Light Operation with Golden White LED Headlight, Rear Light.
Lighted rear marker lights (red to the back and green to the sides). Lighted cab light (with auto shut off). Die Cast Body with Heavy Die Cast chassis for Maximum Tractive Effort.
Front coupler: option of closed pilot door, working metal coupler, plastic dummy coupler. Rear coupler: working metal coupler. Separately Applied Handrails, Ladders, Whistle, and Brass Bell.Will Operate on Code 83 and 100 rail. Recommended Minimum Radius: 18 inches.
Operates in DC & DCC (use DCMaster for DC Sound). Record & Play Operation - Records and plays back sounds and movements once or repeatedly for automatic operation.
16-bit Sample Rate for exceptional high frequency sound clarity. Playback Whistle for multiple whistle lengths and patterns. Choice of 3 selectable Whistles. Alternate Whistle / Horn where applicable for locomotive with air horn and steam whistle - both the main whistle and alternate can be easily played. Adjustable bell ringing interval for faster or slower bell.
Numerous user-mappable functions with available keys. Johnson Bar or Power Reverse Sound at Direction Change. Passenger Station Ambient Sounds - Controlled with Function Key.Lumber Yard Ambient Sounds - Controlled with Function Key. Farm related radio chatter - Controlled with Function Key. Crew Radio Communications - Controlled with Function Key.
Maintenance Yard related radio chatter - Controlled with Function Key. Demo Mode for display and demonstrations. Grade Crossing Signal - Controlled with Function Key.
Simple Programming with Integral DCC Decoder. Automatic 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. Chuff sound intensity varies with load. Individually adjustable sound volumes for most effects. Specifications on this page subject to change. We are an authorized Broadway Limited dealer. The item "Broadway Limited HO Scale UP Challenger Gray/Wings #3976 Sound/DC/DCC Smoke 5825" is in sale since Tuesday, July 9, 2019. This item is in the category "Toys & Hobbies\Model Railroads & Trains\HO Scale\Locomotives".
The seller is "ironplanethobbies" and is located in Springfield, Missouri. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Panama, Trinidad and tobago, Guatemala, Honduras, Jamaica, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Montserrat, Turks and caicos islands, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Ecuador, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Peru, Pakistan, Paraguay, Reunion, Viet nam, Uruguay, Russian federation.