Retrol R01 1/12 Scale Hot Air Pumping Engine Model, Water Cooled External Combustion Stirling Engine Mechanical Set, Ready to Run, Brass and Bamboo Construction, for Adults and Hobbyists

Specifications:.Material: Brass + Bamboo.Form: Ready to Run.Cyilinder Diameter: 13mm.Stroke: 24mm.Speed: 100-1000rpm(A continuous running time of 15 minutes on a single gas tank.).Cooling Mode: Water Pump Cooling.Product Dimensions: 12.5 x 7.5 x 12.8cm.Product Weight: 900g.Package Dimensions: 20 x 20 x 20cm.Package Weight: 1350g.Packing: Box.Ages: 16+Package Including.Engine Model *1.Chimney *1.Instructions *1

• Material: Brass
• [Educational & Scientific Value]: This detailed 1/12 scale hot air pumping engine model demonstrates closed-cycle external combustion principles, offering immense scientific and educational value for understanding mechanics, physics, and historical engineering applications in a hands-on way.
• [Metal Engine Model Kit That Works]: Engineered with a retro aesthetic, this working engine model features a compact design with a modern water-cooled circulation system and gas tank, ensuring reliable and fascinating operation every time it runs on butane fuel.
• [Easy Start & Long Operation]: To start this functional engine model, simply add butane, ignite the boiler, fill the water tank, and hand-crank the flywheel. It achieves speeds of 100-1000rpm and provides a continuous running time of approximately 15 minutes per tank.
• [Premium Display & Gift]: With its exquisite brass and bamboo construction, this stirling engine model serves as a stunning desktop decoration and collectible craft. It makes a perfect high-end gift for teachers, students, technology enthusiasts, and any mechanical hobbyist.
• [Low Maintenance & Durable]: Built with fewer moving parts from quality metal materials, this durable engine model requires minimal maintenance, boasts a longer service life, and is an ideal introductory project for adult enthusiasts new to mechanical models.