Xixian 4-Stroke Engine Model for Physics Teaching – Manual or Battery-Powered Demo

• E onal Use: Designed specifically for middle school physics curriculum, this assembled engine model clearly demonstrates the intake, compression, power, and exhaust strokes of a single-cylinder four-stroke engine through visible moving parts and labeled components.
• Dual Operation Mode: Operates either manually via hand crank for step-by-step stroke visualization or with 2 AA batteries (not included) for continuous automatic rotation—ideal for both classroom instruction and student-led exploration.
• Ready-to-Use Design: Fully pre-assembled with secure plastic and metal construction; no tools or setup required—students and teachers can begin demonstrating engine principles immediately upon unboxing.
• Compact Classroom Fit: Measuring approximately 17 x 11 x 30.5 cm and weighing 766 g, its space-efficient footprint fits easily on lab benches, carts, or presentation tables without obstructing student visibility.
• Clear Structural Learning: Features transparent housing sections and color-coded internal parts—including piston, connecting rod, crankshaft, and fuel injector—to reinforce understanding of real engine architecture and thermo mic function.

Product description Specification Features: middle school physics course experiment teaching. Used to explain the basic structure and working principle of four - stroke single - cylinder engine. Two ways of using, manual or connecting power supply. Already assembled, easy to use. Compact design, making it convenient for demonstration. Specification: Material: Plastic + Metal Size: As the picture shown Battery: 2 x 1.5V AA battery (NOT included) Base length: Approx. 17cm / 6.69inch Width: Approx. 11cm / 4.33inch Height: Approx. 30.5cm / 12inch Weight: Approx. 766g Package Included: 1 x Engine Model How to Use Package List Note Safety Warning this product has no safety hazard to users