Big Boy Steam Locomotive – Mould King 12049

Recreate the legendary Union Pacific Big Boy (4000-class), universally celebrated as the pinnacle of American steam engineering built to conquer the rugged Wasatch Range. The Mould King 12049 building set spans over 1 meter in length and features more than 3,000 precision-molded pieces capturing the iconic 4-8-8-4 articulated wheel arrangement. The synchronized mechanical linkage brings the drive rods and pistons to life, complemented by an intricate driver's cab interior and a massive coal tender. Every section delivers a rewarding, deeply immersive building journey tailored for experienced builders and railroad enthusiasts. This magnificent scale model stands as an undisputed centerpiece for any premium railway showcase.
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2 310 Kč
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List Number: MK-12049
EAN: 6937472004134
Warranty:24 months
Manufacturer:Mould King
Price excluding VAT:1 904,09 Kč
Electronic Waste Recycling Fee:6 Kč
price overall (+ AF + PHE):2 310 Kč
Description
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Important information for RC 14+ models

Big Boy Locomotive 4-8-8-4 | Mould King® 12049

Building kit of a static model of the largest and most powerful steam locomotive ever built. The set was designed by renowned designers from the BriXpert studio.



Detailed view of the assembled locomotive

About the model

This 1940 locomotive model, built for Union Pacific, perfectly captures all key lines of the real-world original. The wheels are configured as 4 leading + 8 coupled + 8 coupled + 4 trailing. Distinctive highlights include the elongated boiler and the attached tender in the carrier's iconic yellow livery. The Big Boy is a static display model set on a 104 cm long track section. The track segments are compatible with COBI® and LEGO® systems.



Detailed view of the locomotive and tender coupling

Details

The building set features impressive details such as the full coupling between locomotive and tender including hose connectors, a detailed engineer's cab with gauges, and designated spots for fire hoses. The track display base is constructed from multiple brick layers to ensure solid stability for handling. Dusting is simply part of the hobby, after all!



Front view of the building instruction manual

Assembly

Assemble the model from 3,040 high-quality ABS pieces guided by clear instructions. Everything fits together seamlessly. Unsure which of two similar pieces to choose? Don't worry! The detailed manual with a 1:1 scale reference guide leads you through every step with certainty.



Technical drawing with model dimensions

Dimensions

The assembled model measures 104 cm in length, 9.7 cm in width, and 12.6 cm in height. It makes an eye-catching centerpiece for any room or office.



Why Mould King?

Great value, high quality, and excellent functionality.

Precision pieces
Functional models
Modern design
Compatible with LEGO®

What does the model look like?

Take a look at the assembled model.

R/C controlNo
Recommended age14+ years
Product includes batteryBuilt-in battery in the smart module
Package weight3405 g
Compatible with other brand of kitsYes
MaterialABS
Number of figures0 pcs
Number of pieces3040 pcs
Box dimensions44 x 30 x 12 cm
Dimensions after assembly104 x 9,7 x 12,6 cm
SoundsNo
Difficulty of assembly3/5 = I can handle building kits
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Safety and Maintenance

Warning 0-3

Safety Warning

This product is not intended for children under 3 years of age. Contains small parts – choking hazard! The product packaging contains plastic bags. Do not give them to children to play with and keep them out of their reach – suffocation hazard!

Age 14+
Age Rating and Care: This building set is intended for advanced builders aged 14 and up. The product requires no special maintenance. If the pieces get dirty, simply wipe the surface with a dry cloth. Protect the product from moisture and water.

Remote Control and Batteries

Controller
Battery Installation: The remote control requires two 1.5V AAA batteries (not included). Unscrew the security screw on the remote, insert the batteries with the correct polarity, and secure the cover again.
Some models can be controlled exclusively via a smartphone app (see product description).
Information
Battery Safety Guidelines:
  • Do not recharge non-rechargeable batteries. Rechargeable batteries should only be charged under adult supervision.
  • Use only the included USB cable to charge the smart boxes (input 5V / 500mA).
  • Do not mix different types of batteries or old and new batteries. Do not leave exhausted batteries in the controller.
  • Regularly inspect the USB cable; never use a damaged cable.

Packaging and Waste Disposal

Packaging Component Material Type Code Disposal
Box and Manual Corrugated Cardboard / Paper PAP 20/22 Blue Bin (Paper)
Plastic Bags Soft Plastic (LDPE) LDPE 04 Yellow Bin (Plastic)
Sticker Backing Composite Paper C/PAP 81 General Waste
Battery Recycling
Battery Disposal: Do not throw batteries into household waste, fire, or water. Use designated collection points for electronic waste.
FCC Logo

FCC Safety Statement

Changes or modifications to the device not approved by the manufacturer must not be carried out. Do not use such equipment. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful electromagnetic radiation in a residential installation.

This equipment generates, uses, and can radiate radio frequency energy and, if not used in accordance with these instructions, may cause harmful interference to other electronic devices and radio communications in the vicinity. However, there is no guarantee that interference will not occur in a particular installation.

If this equipment does cause interference to radio or television reception, the user is encouraged to try the following measures:
  • Reorient or relocate the receiving antenna.
  • Increase the distance between this module and the affected device.
  • Connect the equipment to a different power circuit.
  • Consult the dealer or an experienced radio/TV technician for help.

This device complies with the requirements of Article 15 of the FCC rules. Use this device only if it does not cause interference to nearby electronic equipment. Interference with the module caused by nearby devices may result in unexpected behavior of the module.


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