Athearn Ready To Roll DUPX 4-6-6-4 Challenger Locomotive 3933
Model Information
The size ratio of the model relative to the real-world prototype (e.g., HO, N, O).
N
The marketing brand under which the item is sold (e.g., Athearn, Walthers).
Athearn
A specific product line within the brand (e.g., Genesis, Mainline).
Ready To Roll
The general category of the item (e.g., Locomotive, Rolling Stock).
Locomotive
A more specific classification (e.g., Diesel-Electric, Boxcar).
Steam
A detailed description of the specific car or locomotive type (e.g., GP38-2, Plug Door Insulated Steel).
4-6-6-4 Challenger
The actual entity that manufactured the model, if different from the brand.
Athearn
The stock keeping unit (SKU) or catalog number assigned by the manufacturer.
ATH25542
The name of the railroad or owner.
Dupont (DUPX)
The specific number assigned to this individual car or locomotive.
3933
The alphabetic code identifying the owner (e.g., UP, BNSF).
DUPX
Curated list of common equipment details like DCC, Sound, Powered status, etc.
Additional attributes or equipment details not covered by standard features.
Prototype Details
The builder of the real-world equipment (e.g., EMD, GE, ACF).
ALCO
The build date, if printed on the model.
-
The rebuild date, if printed on the model.
-
The reweigh date, if printed on the model.
-
The earliest time period appropriate for this item.
Second Generation Diesel (1960 - 1980)
Transition (1940 - 1960)
Steam (1880 - 1940)
The specific decades during which this item would be prototypical in revenue service.
2000s
1990s
1980s
1960s
1950s
1940s
The approximate length of the car in feet.
-
Specific measurements of the model or prototype. Format: [Type] [Value] (e.g. IL 40'6").
Allowed types:
• IL (Inside Length)
• IW (Inside Width)
• IH (Inside Height)
• OL (Outside Length)
• OW (Outside Width)
• OH (Outside Height)
• EH (Eaves Height)
• EW (Eaves Width)
• EXH (Extreme Height)
• EXW (Extreme Width)
-
Volume or weight capacity markings as labeled on the model or prototype. Format: [Type] [Value] (e.g. CUFT 3000).
Allowed types:
• CUFT (Cubic Feet)
• CAPY (Nominal Capacity)
• LDLMT (Load Limit)
• LTWT (Light Weight)
• GRL (Gross Rail Load)
• MAX WGT (Max Cargo Weight)
• GAL (Gallons)
• US GAL (US Gallons)
• IMP GAL (Imperial Gallons)
• LITERS (Liters)
• KG (Kilograms)
• SHELL (Shell Capacity)
• DOME (Dome Capacity)
• WATER CAPY (Water Capacity)
• ICE CAPY (Ice Bunker Capacity)
• BKR CAPY (Bunker Capacity)
• LEVEL (Level Full Capacity)
-
Availability
The date the model was announced by the manufacturer.
August 2021
The estimated arrival date for the model provided by the manufacturer at the time of announcement.
-
The actual date the model became available at retailers.
-
The Manufacturer's Suggested Retail Price at the time of announcement.
$39.90
Model Information
The size ratio of the model relative to the real-world prototype (e.g., HO, N, O).
N
The marketing brand under which the item is sold (e.g., Athearn, Walthers).
Athearn
A specific product line within the brand (e.g., Genesis, Mainline).
Ready To Roll
The general category of the item (e.g., Locomotive, Rolling Stock).
Locomotive
A more specific classification (e.g., Diesel-Electric, Boxcar).
Steam
A detailed description of the specific car or locomotive type (e.g., GP38-2, Plug Door Insulated Steel).
4-6-6-4 Challenger
The actual entity that manufactured the model, if different from the brand.
Athearn
The stock keeping unit (SKU) or catalog number assigned by the manufacturer.
ATH25542
The name of the railroad or owner.
Dupont (DUPX)
The specific number assigned to this individual car or locomotive.
3933
The alphabetic code identifying the owner (e.g., UP, BNSF).
DUPX
Curated list of common equipment details like DCC, Sound, Powered status, etc.
Additional attributes or equipment details not covered by standard features.
Model Information
The size ratio of the model relative to the real-world prototype (e.g., HO, N, O).
N
The marketing brand under which the item is sold (e.g., Athearn, Walthers).
Athearn
A specific product line within the brand (e.g., Genesis, Mainline).
Ready To Roll
The general category of the item (e.g., Locomotive, Rolling Stock).
Locomotive
A more specific classification (e.g., Diesel-Electric, Boxcar).
Steam
A detailed description of the specific car or locomotive type (e.g., GP38-2, Plug Door Insulated Steel).
4-6-6-4 Challenger
The actual entity that manufactured the model, if different from the brand.
Athearn
The stock keeping unit (SKU) or catalog number assigned by the manufacturer.
ATH25542
The name of the railroad or owner.
Dupont (DUPX)
The specific number assigned to this individual car or locomotive.
3933
The alphabetic code identifying the owner (e.g., UP, BNSF).
DUPX
Curated list of common equipment details like DCC, Sound, Powered status, etc.
Additional attributes or equipment details not covered by standard features.
The official description provided by the manufacturer.
PROTOTYPE SPECIFIC INFORMATION The name "Challenger" was given to steam locomotives with a 4-6-6-4 wheel arrangement.T his 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 boileTr.h e Union Pacific Railroad sponsored development of this type to meet the need for higher speeds in main-line service. Historically, articulated locomotives had been limite d to slow speeds by factors inherent in their design.T he technical breakthroughs achieved with the Big Boy enabled the carrier to develop a newer, improve d Challenger that met their speed expectations. Though originally intended for freight service, many Challengers were used in passenger service . $399.99 w/o SOUND | $499.99 w/ SOUND A T H E A R N VISIT Your Local Retailer CLICK Athearn.com CALL 1.800.338.4639 These items are subject to Horizon's MAP policy
Additional community-contributed notes or observations.
Initial Source: 10_N_Challenger_082721.pdf