{"product_id":"air-stirling-educational-cup-model-motor-toy","title":"Air Stirling Educational Cup Model Motor Toy","description":"\u003cp\u003eA Stirling engine is a heat engine that operates by cyclic compression and expansion of air or other gas (the working fluid) at different temperatures, such that there is a net conversion of heat energy to mechanical work.\u003c\/p\u003e\u003cp\u003eTeachers can make the explaining process much more straightforward and students can better understand its principle.\u003cbr\u003eRun freely on the top of a cup of hot water, no need to fire an alcohol lamp, safer for children.\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2259\/7485\/files\/product-image-1588257416_480x480.jpg?v=1643970051\" alt=\"\"\u003e\u003c\/p\u003e\u003cp\u003eThe start temperature difference between the product bottom contact and circumstance shoulder be greater than 25℃.\u003cbr\u003eGently flip the wheel, then it can run itself.\u003c\/p\u003e\u003cp\u003eThe exquisite frosted plunger can avoid steam leakage and reduce abrasion.\u003cbr\u003eIf the friction between the flywheel and support is big, please use a little graphite dry lube to quiet it down nicely. Don't use oil, because it will lead to oil dirt.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003eMaterial: Stainless Steel +  Spray Paint Carbon Steel + Glass\u003cbr\u003ePrinciple of Operation: Heating Expansion \/ Cold Compression\u003cbr\u003eSpeed: 180rpm (max.)\u003cbr\u003eItem Size: 12.2 * 10.2 * 10.2cm \/ 4.8 * 4 * 4\"\u003cbr\u003eItem Weight: 250g \/ 8.8oz\u003cbr\u003ePackage Size: 17.3 * 9.5 * 11cm \/ 6.8 * 3.7 * 4.3\"\u003cbr\u003ePackage Weight: 333g \/ 11.7oz\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003cstrong\u003ePackage List:\u003c\/strong\u003e\u003cbr\u003e1 * Low Temperature Stirling Engine Model DIY Kit\u003cbr\u003e1 * User Manual(English)\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e\u003cbr\u003e1. Children under 12-year-old should be accompanied by an adult when playing this product.\u003c\/p\u003e","brand":"Maetiva","offers":[{"title":"type 5","offer_id":67652363944123,"sku":null,"price":59.99,"currency_code":"USD","in_stock":true},{"title":"type 1 HOT","offer_id":67652363976891,"sku":null,"price":59.99,"currency_code":"USD","in_stock":true},{"title":"type 4","offer_id":67652364009659,"sku":null,"price":49.99,"currency_code":"USD","in_stock":true},{"title":"type 3 Black","offer_id":67652364042427,"sku":null,"price":49.99,"currency_code":"USD","in_stock":true},{"title":"D2","offer_id":67652364075195,"sku":null,"price":49.99,"currency_code":"USD","in_stock":true},{"title":"D1","offer_id":67652364107963,"sku":null,"price":49.99,"currency_code":"USD","in_stock":true},{"title":"D3","offer_id":67652364140731,"sku":null,"price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0723\/0121\/5931\/files\/product-image-1893066341.png?v=1791521062","url":"https:\/\/maetiva.com\/products\/air-stirling-educational-cup-model-motor-toy","provider":"Maetiva","version":"1.0","type":"link"}