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Sunnytech

Sunnytech Mini Low Temperature Stirling Engine Motor Mechanical Skills Educational Model Black LT004

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Availability: Only 10 left in stock, order soon!
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Arrives Thursday, Oct 15
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Color: Metallic Black


Features

  • PREMIUM CRAFTSMANSHIP & DURABLE BUILD ----It features a mirror-polished stainless steel base and a crystal-clear glass cylinder.Every component undergoes a specialized surface treatment to ensure long-lasting rust resistance.This engine is 100% oil-free, making it incredibly easy to maintain and perfectly safe to display on your desk or coffee table.
  • EFFORTLESS OPERATION Simply place it on a cup of hot coffee and watch it magically come to life! When it slows down, the coffee temperature is ready to sip. Enjoy physical powertrain mechanism display and coffee. It also can work on top of ice cube. Some guys put it on cup of hot water and put small ice cubes on the upper plate. This makes the temperature difference much bigger than normal, then it runs even faster and crazier.
  • LONG LASTING----It can run for 24+ hours continuous without any broken if there are continuous power supplies. One customer put it on USB hot plate (excluded in the package) and it runs on his desk for weeks.Attention: This is a mini Low Temperature Stirling. Size: 2.95 in diameter * 4.33 in height / 7.5 cm * 11 cm,Please measure the size with ruler instead of image the size in mind.
  • PRIORITY GIFT OPTION FOR MANY APPLICATIONS----It is an amazing and fantastic product. Its elegant gift package makes it spruce up and presentable. It has a wide range of application as, great gift for science project, Physical/mechanical learning, teachers Demo props on the class, birthday gift for friends, families, parents, etc. Many of our customers come from school, colleague, etc.
  • AMAZING CONVERSATION PIECES ON YOUR DESK----It's funny to see people's looks and reactions when they squeeze a little shot for this . Put it on the cup which full with hot waters, give the flywheel a gently push, and get the flywheel going, and then it works like charm.

Description

Sunnytech’s US-based operations abides by a 100% zero-landfill policy. All leftover materials are recycled, including electronics. Sunnytech began in a garage in New Jersey. A family company, we promise to only produce and sell products that we would be proud to use in our own homes and yards.we apply a "triple bottom line" concept, which can help our company achieve a successful and sustainable business model. we are trying to play an active role in the communities we run. Because we believe that we are an outstanding steward of our beautiful country and planet. Sunnytech started in a garage in New Jersey. we promise to only produce and sell products that we will proudly use them in our own homes and yards. We think a lot of about it. How does good design benefit people, how does it benefit the planet and how does it generate profit for business? We seek to do the right thing, to do it well, to support people, planet and profit. That means we are trying to play an active role in the communities we run. We will test everyone to make sure it good before send out and follows a 100% policy. Light Your Flag With Dazzling Glory, Just To Be Admired & Cool.New LATEST Design, Upgraded Electric Circuit, you will love it forever. A great gift for students' science project,teacher’s Demo props on the class, birthday gift for friends, families, parents, students. It can be students' science project, Physical/mechanical learning, teacher’s Demo props on the class, birthday gift for friends. We can offer parts for all our product. We can offer parts for all our product. We can offer parts for all our product. At Sunnytech, We think a lot of about it. How does good design benefit people, how does it benefit the planet and how does it generate profit for business? We seek to do the right thing, to do it well, to support people, planet and profit. Sunnytech’s business follows a 100% zero landfill policy. All leftover materials are recycled, including electronic products. every customer deserves the best service. The stirling engine is produced with high quality material and elegant workcraft. this stirling engine adopts mirror surface stainless steel for the base, glass cylinder liner, precision bearing, bearing steel shafts, zinc alloy flywheel. All the parts have done surface treatment to avoid rusting. Pour a cup of hot coffee, put it on the cup, it run magically. When it slows down, the coffee temperature is suitable for drink. Enjoy physical powertrain mechanism display and coffee. It also can work on top of ice cube. Some guys put it on cup of hot water and put small ice cubes on the upper plate. This makes the temperature difference much bigger than normal, then it runs even more fast and crazy. Customer: I’m a high school physics teacher and love science gadgets, especially if I can use them to teach something fun. Often, science toys or demonstration equipment is made cheaply and doesn’t always work. This Sterling engine works amazingly well. It is easy to put together, the parts are well crafted, and it’s easy to get it working. I use a cup of hot coffee or hot water to heat the base. After about a minute you simply need to get the engine going with a little nudge and it will keep working for minutes. The hotter the water the faster the engine goes. Who would have thought? It's funny to see people's looks and reactions when they squeeze a little shot for this Stirling engine. Put it on the cup which full with hot waters, give the flywheel a gently push, and get the flywheel going, and then it works like charm. All of your guests want to know what happened, ice-breaking success. What a marvelous toy! To be admired and to be talked more from your friends if you have this magic stuff. This stirling engine designed reasonable and compact. You can bring it home, school office with convenient in your bag. ATTENTION: 1. Only use a little graphite dry lube quiet it down nicely if there is a little noisy. You can scratch off the graphite from the pencil with a knife. 2. Prohibit to add oil to lubricate. Because the oil will mix with dust in the air to be oil-dirt. That will make the friction to be even bigger. The stirling engine can't run freely then. 3. This is a mini Low Temperature Stirling. Size: 2.95 in diameter * 4.33 in height / 7.5 cm * 11 cm. Please measure the size with ruler instead of image the size in mind. PACKING LIST: 1* stirling engine. 1* very detailed user manual. The stirling engine is produced with high quality material and elegant workcraft. this stirling engine adopts mirror surface stainless steel for the base, glass cylinder liner, Aluminum alloy flywheel. All the parts have done surface treatment to avoid rusting. Oil-free. It is smaller than other two low-temperature stirlings in our store. The size: 2.95 in diameter * 4.33 in height / 7.5 cm * 11 cm . please measure the size with ruler instead of image the size in mind. It is an amazing and fantastic product at this price. Its elegant gift package makes it spruce up and presentable. It has a wide range of application as, great gift for science project, Physical/mechanical learning, teacher’s Demo props on the class, birthday gift for friends. It's funny to see people's looks and reactions when they squeeze a little shot for this Stirling engine. Put it on the cup which full with hot waters, give the flywheel a gently push, and get the flywheel going, and then it works like charm. Features: Model: LT004 Color: Silver plate and flywheel Speed up to 180-200 RPMStart temperature difference: about 20℃ Celsius/68 Fahrenheit Material: sainless steel, glass, aluminum alloy, PVC foam and plastics Size: 7.5*7.5*11cm/2.95* 2.95* 4.33 in Weight:120g/0.26Ib Attention: This is a mini Low Temperature Stirling. Size: 2.95 in diameter * 4.33 in height / 7.5 cm * 11 cm. Please measure the size with ruler instead of image the size in mind.

Brand Name: Sunnytech


Age Range Description: over 15 years old


Educational Objective: interest of science


Set Name: Sunnytech Mini Low Temperature Stirling Engine Motor Mechanical Skills Educational Model Black LT004


Number of Packs: 1


Number of Items: 1


Unit Count: 1 Count


Manufacturer: Sunnytech


Manufacturer Part Number: LT004


Manufacturer recommended age: 15 - 15 years


Theme: Stirling Engine


Material Type: high quality material and elegant workcraft


Size: Small


Item Dimensions: 2.76 x 2.76 x 3.96 inches


Item Weight: 0.2 kg


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Oct 15

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • There’s something Zen about a Stirling Engine
Color: Grey
Review Image by J. Sorensen J. Sorensen
Update: Oh, by the way, I didn’t mention in my last update but I cleaned the cylinder again and it’s been running fine ever since. I’m sorry for anyone that was emotionally committed to this experiment and was disappointed it was over. We’re at 2 years 9 months more-or-less constant use. I put a strobotach on it a long time ago and if i recall correctly at that time it was running about 300-400 rpm, but looking at it right now I bet it’s more in the 100-200 rpm range. I didn’t do the math how many revolutions this is total but I probably will someday. ———— Update: tonight I came home and the engine was oscillating back and forth, but not rotating. As others have mentioned, because of its magnetic coupling to the displacer, this engine can rotate in either direction. So if the engine loses enough energy (for whatever reason) the flywheel will stop rotating and begin to oscillate. If it can regain enough momentum it will restart in one direction or the other but if not it will eventually stop. Such drama as I was watching this! With each oscillation I’m wondering, “Will it get over the top??” Sadly it did not, and it eventually stopped. I have to admit, after 2-1/2 years it’s getting increasingly difficult to keep this running continuously. I think there are several factors, the first being that it’s been running continuously for about 2-1/2 years. Second, I cracked the power piston cylinder when I sprayed compressed air on it (inverted). Finally, in the past few months I put an UV LED over it so my painted-on glow-in-the-dark dots are glowy all the time. For some reason this has motivated gnats to think the power piston is a super place to call home even though the engine is under a glass globe. I don’t think the mass of the gnats on the piston is a problem but I could believe some gnat guts on the cylinder walls could be. Anyway, she’s all cleaned up and running again. ——— Update: it’s been a long time and I’m starting to lose track, but IIRC I’m at about 2yr 2mo of running this engine constantly on a 6w heater. I’m not going to do the math to see what that cost me on the electric bill. Ok, I probably will eventually. Anyway, it’s still going. There was a little while when it slowed down and even stopped but I cleaned up the power piston and now it’s going again full speed 24x7x365-1/4. —— Update: Coming up on a year of constant operation. At some point I painted glow-in-the-dark spots on it. That’s fun. —- Update: I’ve had this running 24/7 on the aforementioned warming plate I made for it for about 6 months now. There’s no indication that it’s going to quit. I would have thought that the arm would have sawed off the pin by now, but nope. As for the squeaking, contrary to the directions I put a small drop of light oil on the pin and that fixed it right up. Now for another PSA, if you get the urge to use an inverted can of compressed air to supercool the top plate, be careful not to get it on the glass cylinder because it *will* crack (I was able to fix mine). But, man, that engine will book when you spray it! ________________ Update: Just so you know, the DWCL-01 will not run if it’s set on a magnetic surface because of the magnet in the displacer, unless that metallic surface happens to be extremely warm. That means if you buy or build a warming plate it has to be non magnetic. I built a warming plate out of some spare power resistors I had laying around (we all have a collection of spare power resistors, right?) using a pickle jar lid as the surface. The engine would not spin! Unless I picked it up then it would run like crazy but if I set it down it would stop again! Turns out the magnet in the displacer was sticking to the jar lid. So I got rid of the lid and set it down with a thin piece of cardboard between the engine and the resistors and it ran ok. Turns out the resistors are also slightly magnetic. Anyway, not a knock on the product, just a PSA. Your physics may vary. ———— I got the DWCL-01 because some other people said it was a little better construction and had real bearings. When mine came today I opened it right off the UPS truck so the machine was pretty cold. I held it in my hand and it started right up. I heated up a couple mugs of water at work and it ran for just about an hour on each one. It’s neither noisy nor silent; sometimes it makes kind of a sqeaking sound, but overall I find the repetitive sound soothing! This one will be my home engine but I might get another for my office just for the sound! Tonight I put it in the fridge then took it out, held it in my hand, and it ran like gangbusters. I have many experiments planned for it. As for the construction, it’s smaller than expected but fit perfectly over the mug I had for it. The screws around the circumference actually held it in place nicely on the mug. The fit and finish is maybe not quite as nice as the photos but it’s fine. While I had it in my office every engineer that came in wanted to talk about it. (One non-engineer came in and was like, “What’s that?” and I said, “A Stirling Engine,” and she rolled her eyes and goes, “Ok, whatever.”) So, in summary, it’s cool and fun. Is it $40+ of fun? I don’t know. Between the price and fit and finish I’m torn between four and five stars. For the fun factor I’m going to give it the benefit of the doubt and go with five. ... show more
Reviewed in the United States on January 4, 2019 by J. Sorensen J. Sorensen
    • exactly why the engine runs, detailed
Color: Gold
This an elegant engine, both in appearance and in its functioning. You can see all the parts moving. Of my five Stirling engines, it is the best performer at low temperatures. The Stirling engine is a heat engine, just as are steam engines, gasoline engines, hurricanes and the "drinking bird" toy busily bobbing. The large cylinder at the bottom contains the displacement piston. I will call it the displacer. It is driven by a crank on the flywheel. In the small cylinder, the power piston cranks the flywheel twice each revolution, making everything move. The displacer moves the air in the displacement cylinder, alternately to the bottom plate to be heated and then to the top plate to be cooled. This air is confined to the interior of the engine, so that when heated (or cooled), it cannot expand (or contract) but instead must increase (or decrease) its pressure compared to the air outside in the room. The pressure differences cause two power strokes per revolution, one in which the pressure in the engine is below room pressure so the power piston is pushed down, and the other in which the greater pressure inside the engine pushes upward on the power piston. Crucial to a Stirling engine is that the cranks control the pistons so that the power piston is always a quarter of a turn behind in its motion compared to the displacement piston. Here is how this offset between piston motions causes the needed pressure changes. The downward power stroke begins when the power piston is at the top of its cylinder and the displacer is at the middle of its downward stroke. At this point in time, the air is divided evenly between the cool upper region and the warmer lower one. The turning flywheel pushes the power piston to start the power stroke. As the power stroke continues, the displacer pushes more air into the cool upper region, and the overall pressure in the interior drops below room pressure. When the power piston reaches half way down in its power stroke, the displacer is all the way down, so all the air is in the cooler part of the interior space. The pressure in the interior of the engine is at its lowest point so the room air is pushing hardest downward on the power piston. This is the most powerful part of the power stroke, the more so because here the power crank is oriented to furnish its highest torque. The power piston continues downward, reaching the end of this power stroke. The upward power stroke now begins, and the explanation as to how it functions mirrors that of the downward stroke. You can see the two power strokes, one down and the other up! Start the engine on a hot cup. After it is moving at about 1 rps (60 rpm) take it off and set it on the table. Watch as it slows to a stop. In the last 2 or 3 revolutions the flywheel moves with an easily seen jerk at every power stroke. I find it easiest to see this by watching the power crank. The up stroke is harder to see because the engine is not rotationally balanced. The flywheel probably is balanced, but the combined weight of the pistons pulling down unbalances the system. This explanation raises some questions. The main one is that we know that the heat flow between the air and its nearby plate is not instantaneous. But there is a hint that it does happen very quickly. As the engine runs, the rim of the top plate becomes much hotter than the center of the plate. (I measured the plate temperature with one of those thermometer "guns" whose laser pointer shows a red dot showing just which spot is being tested.) The rim is the place that the hot air from below the displacer enters the top space. So for that place to be much hotter than the rest of the plate indicates that much of the heat from below gets dumped here quickly, before the air moves further into the cold region. Another point: the engine leaks air from the space between the power piston and its cylinder wall. This leak is slow enough that it does not affect the efficiency of the engine. But the leak is crucial! If the engine did not leak, it would soon not run at all! The air inside the engine becomes much hotter than outside, and its pressure therefore would be enough to push the power piston all the way up and lock it there! But this is avoided because some interior air leaks out, restoring the interior pressure (averaged over a cycle) to match the outside pressure. You can observe this leak yourself. Hold your cold engine with its power cylinder horizontal. Turn the flywheel so that the power piston is at one end of its motion, and hold it there for about 20 seconds. Then turn the flywheel so the piston is at the other end of its allowed motion, and release it. You should see the piston move back close to where you had held it! Repeat, starting this time with the piston at the other end. ... show more
Reviewed in the United States on July 12, 2020 by Edward H. Carlson
    • Buy this Stirling engine.
Color: Gold
Review Image by Trish Trish
It is well designed and the quality of manufacture is outstanding. This is a functional engine and it can also be displayed on a shelf or desk. It is so cool to watch the thing run for a surprisingly long cycle the first time out. I am a retired Mechanic and I highly recommend this product. My video went offline and could only display a photo. ... show more
Reviewed in the United States on September 11, 2025 by Trish Trish

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