{"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":"Sky Blue Baby","offers":[{"title":"type 5 \/ Worldwide","offer_id":43241640591465,"sku":"13017782-type-5-china","price":59.99,"currency_code":"USD","in_stock":true},{"title":"type 1 HOT \/ Worldwide","offer_id":43241640624233,"sku":"13017782-type-1-hot-china","price":59.99,"currency_code":"USD","in_stock":true},{"title":"type 4 \/ Worldwide","offer_id":43241640657001,"sku":"13017782-type-4-china","price":49.99,"currency_code":"USD","in_stock":true},{"title":"type 3 Black \/ Worldwide","offer_id":43241640689769,"sku":"13017782-type-3-black-china","price":49.99,"currency_code":"USD","in_stock":true},{"title":"D2 \/ Worldwide","offer_id":43241640722537,"sku":"13017782-d2-china","price":49.99,"currency_code":"USD","in_stock":true},{"title":"D1 \/ Worldwide","offer_id":43241640755305,"sku":"13017782-d1-china","price":49.99,"currency_code":"USD","in_stock":true},{"title":"D3 \/ Worldwide","offer_id":43241640788073,"sku":"13017782-d3-china","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0687\/1606\/8969\/files\/product-image-1893066341.png?v=1779618845","url":"https:\/\/godmue.com\/products\/air-stirling-educational-cup-model-motor-toy","provider":"Godmue","version":"1.0","type":"link"}