RW-B2 Vertical Premium Live Steam Boiler (500mL)

RW-B2 Vertical Live Steam Boiler (500mL) Heavy-Duty Copper Power Plant with Hardwood Insulation | Engine-Ready Marine Boiler for 70–150cm Scale Boats Built for the Open Water: Premium Live Steam Performance Nothing rivals the timeless charm of a live steam ship slicing through open water on a clear summer day. Designed specifically for scale marine builders and model shipwrights, the RW-B2 Vertical Boiler delivers the exact pressure, thermal efficiency, and vintage aesthetic your marine engine demands. Whether you're upgrading a working RC steamboat or building a museum-worthy display piece, the RW-B2 serves as the ultimate high-output heart for your vessel. Why Live Steam Enthusiasts Choose the RW-B2 Silver-Brazed Solid Copper Core: Hand-assembled from heavy-gauge copper and joined via high-temperature copper-silver brazing. Built to comfortably handle continuous thermal cycles and working pressures up to 4 kg/cm² (57 PSI) without seam breakdown. Authentic Hardwood Thermal Jacket: Wrapped in an insulated, hand-finished hardwood casing that isn't just for show—it drastically minimizes radiant heat loss, boosts boiler efficiency, and keeps fuel consumption low. High-Efficiency Curved Burner Tube: Features a seamless, integrated curved burner designed for butane gas. The unique geometry maximizes flame contact across the 500mL water chamber, achieving faster warm-up times and stable steam production. Superheated Steam for Peak Efficiency: Includes an internal superheater line that dries out wet steam before it reaches your engine's cylinders, preventing water lock and delivering smooth, crisp piston strokes. Fail-Safe Monitoring & Control: Complete peace of mind on the water. Outfitted with dual pop-off safety valves (preset to 4.5–5 kg/cm²), a heavy-duty 0–6 Bar pressure gauge, and a clear sight-glass water level indicator. Direct-Fit Compatibility with Stirlingkit Engines Engineered with standard M7 × 0.75 steam line threading, the RW-B2 drops seamlessly into your RC hull layout and pairs directly with our premier marine engines: RW-V4 Marine Engine — Miniature 4-Cylinder Steam Engine (Ideal for 90–150cm hulls) RW-V2 Marine Engine — Mini Dual-Cylinder V-Type Steam Engine (Ideal for 70–130cm hulls) RW-L2 Marine Engine — Inline Twin-Cylinder Steam Engine (Ideal for 70–130cm retro hulls) Technical Specifications Feature Specification Model RW-B2 Vertical Steam Boiler Boiler Shell Heavy-Gauge Copper (Silver-Brazed) Exterior Insulation Hand-Finished Hardwood Jacket Water Capacity 500 mL (~17 oz) Fuel System Butane Gas (Curved Burner Tube) Operating Pressure 2.0 – 4.0 kg/cm² (28.4 – 56.8 PSI) Safety Relief Setting 4.5 – 5.0 kg/cm² (64 – 71 PSI) Thread Interface M7 × 0.75 mm Boiler Dimensions 90mm Dia. × 140mm H (120mm Chimney) Overall Dimensions 12 × 9 × 14 cm Net Weight 1.5 kg (3.3 lbs) Recommended Hull Length 70 – 150 cm (27.5" – 59") Target Age Group 16+ What’s in the Box: • 1× RW-B2 Vertical Live Steam Boiler Assembly • 1× Integrated Curved Burner System & Pressure Gauge • 1× User Manual & Safety Operation Guide Frequently Asked Questions (FAQ) Q1: Is this boiler handmade, and do you currently have stock available? A: Yes! Each RW-B2 boiler is meticulously hand-assembled and precision-brazed by experienced master craftsmen. Due to the intricate artisan manufacturing process, production is strictly limited. We currently have an exclusive batch of just 20 units in stock and ready for immediate dispatch. Once sold out, the next production run may take several weeks. Q2: How long does shipping take, and do you ship worldwide? A: We provide worldwide tracked express shipping to North America, Europe, Australia, and East Asia. In-stock orders are processed and dispatched within 24–48 hours. Average delivery times are: • USA & Canada: 7–12 business days (Express options available) • Europe & UK: 7–10 business days • Australia & Rest of World: 8–14 business days You will receive a tracking code via email as soon as your package leaves our facility. Q3: How is the boiler packaged to ensure it arrives safely without damage? A: Precision steam equipment requires maximum transit protection. Every RW-B2 is secured inside a high-density, custom-molded shockproof foam casing within a reinforced graphic carton. Sensitive components like the pressure gauge and glass sight tube are doubly protected against vibration, drops, and rough handling during international transit. Q4: What type of fuel should I use, and how long does a full tank run? A: The RW-B2 boiler is designed to run on standard butane gas (commonly used for model boilers or portable stoves). With a full 500mL water capacity and a properly adjusted flame, a single session typically yields 20 to 30 minutes of continuous run time, depending on your engine's steam consumption and throttle settings. Q5: How do I fill water into the boiler, and what kind of water should I use? A: Always use distilled or demineralized water to prevent mineral scale build-up inside the copper tubes. Fill the boiler to approximately 70–80% of its total capacity (around 350–400mL), leaving enough headroom for steam to expand. You can monitor the precise level via the built-in sight glass. Pro Tip: Never dry-fire the boiler without water, as this will damage the silver-brazed seams and thermal insulation. Q6: How safe is this boiler to operate? What safety features are built in? A: Safety is our top priority. The RW-B2 operates safely between 2–4 kg/cm² (28–57 PSI) and features dual independent safety pop-off valves set to automatically vent excess pressure at 4.5–5 kg/cm². Additionally, the live pressure gauge allows real-time pressure monitoring, and the hardwood jacket protects your hands from direct contact with hot copper. Q7: Will this boiler fit inside my specific RC boat hull? A: The RW-B2 has a compact footprint with a 90mm boiler body diameter, a 140mm height, and a 120mm chimney. It is engineered for 70cm to 150cm (27.5"–59") model boat hulls (such as steam launches, tugboats, and riverboats) with sufficient deck height or chimney cutout clearance. Q8: How do I connect this boiler to my steam engine? A: The boiler features a standard M7 × 0.75 threaded steam outlet. It connects directly to Stirlingkit steam engines (RW-V4, RW-V2, and RW-L2) using copper steam piping. If your engine uses a different thread size, standard thread adapters (M7 to M6 or 1/4"-40) can be used. Q9: What maintenance is required after each steam session? A: After each use and once the boiler has cooled down completely: 1. Drain all remaining water to prevent internal corrosion or stagnant residue. 2. Wipe down the hardwood jacket and copper body with a dry soft cloth. 3. Apply a drop of steam cylinder oil or light machine oil to the safety valve springs to keep them operating smoothly.