Doublepropulsion steam engine model designed for demonstration and close observation Key benefits Clear visualization of internal operation: Cylinder and steam chamber are made of transparent plastic, allowing uninterrupted observation of piston movement and steam flow reversing valve. Demonstrates doubleacting operation: Steam is controlled by a reversing valve so that steam and intake air act alternately on both ends of the piston, producing continuous reciprocating motion. Practical mechanical linkage: Builtin crank and connecting rod mechanism with a flywheel converts reciprocating piston motion into rotary motion for visible output. Improved conversion insight: Transparent design and visible linkages make it easier to study energy conversion and mechanical timing, supporting learning and troubleshooting. What the model includes Cylinder and piston assembly Steam chamber with transparent construction Steam flow reversing valve for directional control Crank and connecting rod mechanism Flywheel for smooth rotational output Support bracket and bottom plate for stable mounting Function and performance Doublepropulsion design uses alternating steam admission and air intake on both ends of the piston to generate work on each stroke. Reversing valve governs steam routing to the steam chamber and cylinder, providing directional control of the piston. The crank and connecting rod convert linear piston motion into rotary motion at the flywheel for demonstration of mechanical transmission. Transparent components improve visibility of flow paths and timing, aiding study of conversion efficiency and mechanism behavior. Materials and compatibility Cylinder and steam chamber are transparent plastic for observation of internal processes. Other structural and moving parts are made from suitable rigid materials to provide stable operation and support. Intended for use with lowpressure model steam sources and standard educational steam setups designed for demonstration models. Follow the supplier instructions for appropriate steam generation and safe operating conditions. Use scenarios Classroom demonstration: Show thermodynamics and mechanical linkage principles to students by directly observing piston strokes, steam flow, and valve timing. Hobbyist workshop or display: Use as a working display on a bench or shelf to illustrate classic steam engine mechanics during assembly, testing, or exhibition. Museum or visitor center exhibit: Incorporate into an interactive display to let visitors see realtime internal motion and understand how steam engines convert pressure into motion. Why choose this model Designed specifically to reveal internal working details without disassembly, enabling clear study of piston travel, valve operation, and linkage motion. Compact, mountable design with visible flywheel output makes it suitable for educational and demonstrative applications. Provides a straightforward, handson way to examine doubleacting steam engine mechanics and reversing valve function. Note Operate only with appropriate lowpressure steam sources and under recommended safety practices.