Experience Real Steam Power from the Industrial Revolution

The RW-BL1K Retro Mini Reversible Live Steam Engine and Boiler Model Kit is a fully functional working steam engine kit inspired by the golden age of 19th-century steam engineering.
This KIT version allows you to assemble, fire, and operate a real miniature steam engine driven by live steam—offering an authentic hands-on mechanical experience rather than a static display.

Designed for mechanical enthusiasts, collectors, engineers, and STEM learners, this model faithfully recreates the structure and operating principles of classic steam power systems that once drove factories, steamships, and railways.

Premium Brass Boiler with Full Safety System

The boiler is constructed from fully welded brass, combining traditional craftsmanship with modern precision manufacturing.
For safe and stable operation, it is equipped with:

• Pressure regulator

• Safety valve

• Pressure gauge (0–7 bar)

• Water level indicator

The boiler is compatible with single-cylinder and twin-cylinder RW series steam engines, providing flexibility for future expansion or upgrades.

Die-Cast Brass Engine with Vintage Engineering Aesthetics

The steam engine body is made from die-cast brass, delivering excellent structural strength and a classic steam-era appearance.
Inside, a stainless steel cylinder liner ensures superior heat resistance, reduced wear, and long-term durability during real steam operation.

This balance of vintage aesthetics and modern materials makes the RW-BL1K both a functional machine and a collectible mechanical artwork.

Precision CNC Machining for Smooth, Stable Operation

Key components are produced using high-precision CNC machining to ensure accurate tolerances and reliable performance.

• Flywheel supported by ball bearings

• Smooth piston movement

• Stable rotation under load

• Extended service life

Every detail reflects professional engineering standards, allowing users to clearly observe the beauty of mechanical motion powered by steam.

Authentic Stephenson Valve Gear – Forward & Reverse Control

The RW-BL1K features a historically accurate Stephenson valve gear, widely used in steam locomotives and marine engines.

This mechanism enables:

• Forward operation

• Reverse operation

• Visual understanding of valve timing and steam distribution

The compact yet flexible structure beautifully demonstrates the dynamic rhythm of classic steam power systems.

DIY Assembly with Real Steam Operation

This is a true DIY steam engine kit, supplied with all necessary parts and tools for hands-on assembly.

The kit includes:

• Complete steam engine parts

• Brass boiler system

• Solid base

• Tool set

• Instruction manual

• Alcohol burner for live steam operation

Users can personally assemble, ignite, and operate the engine—making it an engaging project and an impressive display piece.

Specifications

• Model: RW-BL1K

• Type: Reversible reciprocating live steam engine

• Material: Brass + Stainless Steel

• Displacement: 3cc (1.5cc × 2)

• Cylinder Bore: 12.2mm

• Stroke: 12.7mm

• Maximum Speed: 3000 RPM

• Maximum Torque: 600 g/cm

• Power Output: 0.015 hp

• Threaded Connector: M7 × 0.75mm

Boiler

• Boiler Capacity: 200ml

• Boiler Weight: 700g

• Fuel: 50ml ethanol

• Safety Valve Pressure: 2.5–3 kg/cm²

• Working Pressure: 2 kg/cm²

Dimensions & Weight

• Steam Engine Size: 77 × 58 × 98 mm

• Product Dimensions: 25 × 10 × 16.7 cm

• Product Weight: 1200g

• Package Weight: 1500g

• Package Size: 20 × 20 × 20 cm

• Applicable Boat Size: 50–80 cm

• Recommended Age: 16+

• Packing: Gift Box

Packing List

• Steam Engine Parts × 1 set

• Boiler Parts × 1 set

• Base × 1 set

• Tool Set × 1 set

• Instruction Manual × 1