--- product_id: 23424611 title: "Usmile® Low Temperature Stainless Steel Stirling Engine Generator Desk Models Education Toy Model Run Off The Temperature Difference" brand: "usmile" price: "฿3451" currency: THB in_stock: true reviews_count: 8 url: https://www.desertcart.co.th/products/23424611-usmile-low-temperature-stainless-steel-stirling-engine-generator-desk-models store_origin: TH region: Thailand --- # Runs on hot water, no flame needed Up to 20 min runtime per warm cup Precision steel & glass craftsmanship Usmile® Low Temperature Stainless Steel Stirling Engine Generator Desk Models Education Toy Model Run Off The Temperature Difference **Brand:** usmile **Price:** ฿3451 **Availability:** ✅ In Stock ## Summary > ⚡ Ignite curiosity with the coolest engine that runs on your coffee’s warmth! ## Quick Answers - **What is this?** Usmile® Low Temperature Stainless Steel Stirling Engine Generator Desk Models Education Toy Model Run Off The Temperature Difference by usmile - **How much does it cost?** ฿3451 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/23424611-usmile-low-temperature-stainless-steel-stirling-engine-generator-desk-models) ## Best For - usmile enthusiasts ## Why This Product - Trusted usmile brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Eco-Chic Power:** Harnesses everyday temperature differences to run smoothly without flames or batteries. - • **Low-Maintenance Fun:** Quiet down friction with simple graphite—no messy oils needed for smooth operation. - • **Adjustable RPM Thrill:** Speed varies with temperature difference—watch it accelerate from 180 to 250 RPM! - • **Precision Engineering:** Crafted from durable steel and glass for lasting performance and eye-catching design. - • **Desk Conversation Starter:** A sleek, stylish piece that sparks curiosity and elevates your workspace vibe. ## Overview The Usmile® Low Temperature Stirling Engine is a precision-crafted desk model that converts heat from a hot cup of water into mechanical motion, running up to 20 minutes per use. Made from steel and glass, it operates quietly with simple graphite lubrication and reaches speeds up to 250 RPM depending on temperature difference. Perfect for educational demos, office conversation, or unique gifting, it’s a stylish, eco-friendly way to showcase thermodynamics in action without flames or batteries. ## Description This low temperature stirling engine,runs on a hot cup of water(Do not put it above a candle or other fire) The engine's speed depends entirely upon the temperature difference between the hot side and the cold side. In the case of using a cup of hot beverage, not only is the engine transferring the beverage's heat to the surrounding air, there are air currents constantly crossing the top (cold) plate. The differing temperatures will cause the engine to slow or speed according to the net difference between the two plates. For some extra fun, you could obtain a USB-powered cup warmer and place engine on that. After the warmer finally made it to full temperature, the engine will chug along like a champ. Attention: 1.If there is a little noisy, ONLY use a little graphite dry lube or a pencil quieted it down nicely. 2.Do not use oil to lubricate,which will mix with dust in the air, and become a oil-dirt, finally make the friction to be even bigger.The stirling engine can't run smoothy. Size: 102 X 102 X 125mm Material: Steel and Glass Speed: up to 180-250 RPM Start Temerature Difference: 20 ℃ Weight: 236g Package Included: 1 x Low Temperature Stirling Engine Review: well built good value. - well made precision built little machine, good value for the money. with water well below scalding temperature in a styrofoam soda cup, and an ice cube on the top plate my little LTD sterling will run for an hour. starts out abot 180 rpm, still running at the end 30 rpm. gonna put some graphite on the friction points & see what that does. pobably gonna try some boiling water & see how fast it will go. good well built product. i would recommend it. Review: Melted the inner displacer last night, happy to order another one today. - DO NOT LEAVE OVER AN OPEN FLAME such as a zippo. Melted the displacer in mine last night. Besides that though this is a very fun toy and fairly entertaining. It needs a fair temperature difference such as placing it on top of a cup of coffee or tea but it runs great. A bit squeeky and a little louder than I expected, but the novelty of having a fun piece like this is worth it. Even though I ruined mine I'd definitely purchase again. ## Features - This low temperature stirling engine,runs on a hot cup of water(Do not put it above a candle or other fire) , could be a great conversation starter at work and unique gift to families or friends or for class demonstrations.It is almost ready to run: after the installation, put it on a cup of hot water or Ice water, wait a couple of seconds, gently flip the wheel,then it will run itself. - Basically you can run this engine up to 20 minutes with a cup of warm water (the engine must be cool). The bigger the temperature difference between the top and bottom plates the higher RPM you will get. This works best with a hot cup of water underneath and an ice cube in a plastic bag on the top (there is plenty of room for one ice cube on top). - Durable, well made, sytlish, and adjustable.Very fantastic craftsmanship, made with Metal Alloy - If there is a little noisy, ONLY use a little graphite dry lube or a pencil quieted it down nicely. Do not use oil to lubricate,which will mix with dust in the air, and become a oil-dirt, finally make the friction to be even bigger.The stirling engine can't run smoothy. - Size: 102 X 102 X 125mm ,Material: Steel and Glass,Weight: 236g ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01B2MF3MY | | Best Sellers Rank | #649,996 in Toys & Games ( See Top 100 in Toys & Games ) #5,703 in Educational Science Kits | | Customer Reviews | 4.4 4.4 out of 5 stars (52) | | Is Discontinued By Manufacturer | No | | Item Weight | 1.3 pounds | | Item model number | 43227-871 | | Manufacturer | Usmile | | Manufacturer recommended age | 14 years and up | | Product Dimensions | 8.39 x 5.71 x 4.49 inches | ## Images ![Usmile® Low Temperature Stainless Steel Stirling Engine Generator Desk Models Education Toy Model Run Off The Temperature Difference - Image 1](https://m.media-amazon.com/images/I/61QvycrrwZL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ well built good value. *by M***Z on February 11, 2018* well made precision built little machine, good value for the money. with water well below scalding temperature in a styrofoam soda cup, and an ice cube on the top plate my little LTD sterling will run for an hour. starts out abot 180 rpm, still running at the end 30 rpm. gonna put some graphite on the friction points & see what that does. pobably gonna try some boiling water & see how fast it will go. good well built product. i would recommend it. ### ⭐⭐⭐⭐ Melted the inner displacer last night, happy to order another one today. *by N***E on June 15, 2016* DO NOT LEAVE OVER AN OPEN FLAME such as a zippo. Melted the displacer in mine last night. Besides that though this is a very fun toy and fairly entertaining. It needs a fair temperature difference such as placing it on top of a cup of coffee or tea but it runs great. A bit squeeky and a little louder than I expected, but the novelty of having a fun piece like this is worth it. Even though I ruined mine I'd definitely purchase again. ### ⭐⭐⭐⭐⭐ Great gift for kids to get them interested in science and engineering. *by D***3 on July 25, 2022* Even the adults that saw this, who were unfamiliar with Sterling engines, were amazed. Great discussion starter, and a great way to get kids interested in science and engineering... not to mention that it is simply beautiful too. Definitely get one (or more). ## Frequently Bought Together - Usmile® Low Temperature Stainless Steel Stirling Engine Generator Desk Models Education Toy Model Run Off The Temperature Difference - Sunnytech Low Temperature Stirling Engine Motor Steam Heat Education Model Toy Kit For mechanical skills (LT001) - DORAMI Clear Solar Power Crookes Radiometer Sun Light Energy Spinning Vanes --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.th/products/23424611-usmile-low-temperature-stainless-steel-stirling-engine-generator-desk-models](https://www.desertcart.co.th/products/23424611-usmile-low-temperature-stainless-steel-stirling-engine-generator-desk-models) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-04-29*