Model LL001 Cryogenic Stirling Engine Model DIY Kit A compact, handson Stirling engine model designed for classroom and home physics learning. This kit demonstrates the Stirling cycle by converting heat differences into mechanical motion, making the underlying principles easy to observe and explain. Key benefits Clear demonstration of Stirling working principle: shows cyclic compression and expansion of gas at different temperatures to produce motion. Ideal teaching aid: simplifies explanations for students and supports practical classroom demonstrations and lab experiments. Simple heat source: runs on a cup of hot water, no open flame or alcohol lamp required. Durable construction: stainless steel and painted carbon steel parts provide stability and easy cleaning. Ready to use: gently flip the wheel to start; the device runs on its own once the required temperature difference is reached. What makes it stand out Frosted plunger design reduces steam leakage and lowers wear for smoother operation. Maximum speed up to 180 rpm for visible, engaging motion. Maintenance friendly: if friction develops between flywheel and bracket, use a small amount of graphite dry lubricant; do not use oil to avoid grease stains. Color options for the flywheel: gold or purple (optional). Specifications Model: LL001 Working principle: heating expansion and cold compression Wheel color: Gold or Purple (optional) Material: stainless steel and painted carbon steel Maximum speed: 180 rpm Item size: 12.2 x 10.2 x 10.2 cm (4.8 x 4 x 4 in) Item weight: 250 g (8.8 oz) Package weight: 340 g (12 oz) Package size: 17.7 x 12.3 x 9.7 cm (7.0 x 4.8 x 3.8 in) Operating notes Required starting condition: temperature difference between the product bottom contact point and the surrounding environment should be greater than 25 degrees C. To start: gently flip the wheel; the engine will begin running when the temperature difference is sufficient. Lubrication: use graphite dry lubricant if needed; avoid oil. Package contents 1 x Cryogenic Stirling Engine Model DIY Kit 1 x User manual (English) Use scenarios Classroom physics demonstration: show the Stirling cycle and discuss thermodynamic concepts with a visible, moving model. Laboratory or homework experiment: pair with a precision thermometer to measure temperature differences and study performance. STEM club project or desktop display: assemble and run as a practical example of heat to mechanical energy conversion. This LL001 Stirling engine kit offers a straightforward, handson way to explore thermodynamics, suitable for teachers, students, and hobbyists who want a compact, durable model for demonstrations and experiments.