Sunnytech Hot Air Stirling Engine Motor Model Imagination Development Educational Toy Electricity Generator Colorful LED SC (SC02M)
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Availability:
Only 10 left in stock, order soon!
Arrives
Saturday, Jun 7
Features
- NOVEL DESIGNED ----- This engine is a balance style, different from the ordinary Stirling model. It was equipped with a multicolor LED install on the motor. Because of the heat from high-grade alcohol, the engine will run madly and create the electricity. The power will go through the wire and drive the multicolor LED lighting. It's really interesting and imaginative toy.
- EXTREMLY WELL-MADE---- Heating cylinder for the custom-made thick glass material, long-term heating without pressure; It is mainly constructed by metal so it can run quietly and stably (since it is HEAVY, 1.5LB) at speed around 1700 RPM! Our customers are satisfied with the fit and finish of this engine. All the parts have done surface treatment to avoid rusting. You will be pleased once put it on table.
- EASY OPERATION & LONG LASTING----Fill the alcohol burner with your 95% alcohol (we recommend this fuel) and light it. Let the light burn the round ended cylinder for about 60-120 seconds, then give the wheel a gently push, it will run like a charm.
- YOU GET EXTRA BONUS EXCEPT THE STIRING----Still worry about the cylinder glass broken during shipment or usage? It did come with spare glass tubes, one O-rings, check the gallery picture. You can replace it fast and easily if any broken. You can contact us for support if need. We also can make offer for your future parts requirement.
- PRIORITY GIFT OPTION FOR MANY APPLICATIONS----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 Kids' science project, Physical/mechanical learning, teachers Demo props on the class, birthday gift for friends, families, parents, kids, etc. Many of our customers come from school, colleague, etc.
Size: 165x95x120 millimeter
Brand: Sunnytech
Theme: Physics
Age Range (Description): Kid
Item Dimensions LxWxH: 8.9 x 6.4 x 5.6 inches
Product Dimensions: 8.9 x 6.4 x 5.6 inches
Item Weight: 2.31 pounds
Manufacturer recommended age: 15 years and up
Is Discontinued By Manufacturer: No
Manufacturer: Sunnytech
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Saturday, Jun 7
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Style: SC02M
Overall impression: I was very impressed with the overall quality and "fit and finish" of this model. There is very little I can find to complain about in this regard. Despite some of the minor negatives I'll discuss in a moment, my overall impression is very positive and I would not hesitate to recommend this model to anyone who has an interest in these things. The asking price is a bit on the high side, but given the niche market this appeals to, along with the high quality and solid construction of the unit makes me think that I got a fair deal for my money. Some details: I found all of the manufacturer's claims in the product description to be accurate. It comes equipped with everything shown in the pictures. Packaging was quite adequate for any form of shipment. The main engine was securely wrapped in bubble-wrap, and the spare parts were separately foam-wrapped. Everything was placed in a small medium-weight cardboard box, which was then in turn shipped in a larger Amazon heavy cardboard box with extra protective packing. One of the features of this product that I appreciated the most was the heavy, solid, brushed-metal base that the engine is mounted on. At least 2/3 of the total ~1Kg weight of this engine is in the base. Unfortunately, even this heavy base is not enough to prevent the engine from "walking" across a smooth flat surface when it's running, even with the (included) rubber "feet" on the base. Unloaded, this engine flywheel runs around 1800 RPM when powered with alcohol fuel. The mfr. recommends 95% ethanol, but I did not have any on hand so I used 91% isopropyl alcohol, which works just fine. I would not recommend using anything with a <90% alcohol content (such as common 70% "rubbing alcohol"). The tricolor flashing LED supplied (which you hook up to the attached generator) looks cool when the engine is running, but given its dynamic nature, it places a constantly varying load on the generator, which can result in the engine speeding up or slowing down as the LED runs through its display pattern. The generator outputs a bit over 6V unloaded (6.2V is what I measured). I've not yet had a chance to test/measure the generator output operating under a constant-current load (the included LED is definitely NOT a constant current load). Some (minor) negatives - things that could be improved. Note that I did not regard any these issues serious enough to detract from my overall high rating. The provided fuel bottle and cap/wick arrangement is something of a safety hazard. The cap does not screw on or sit on the bottle mouth securely, which means that if the bottle is tipped or jarred hard enough during operation, fuel (alcohol) could escape from it. The fuel bottle does not fit securely in the indentation for it on the engine base, so it is free to rattle around as the engine operates. Having said this, the fueling arrangement is 'safe enough' if it is supervised during operation. Adding a simple (heat resistant) silicone rubber O-ring around the metal wick cap so it would sit in the bottle mouth with a liquid-tight seal would make this a lot safer. A smaller diameter holder (on the engine base) for the fuel bottle, with more sharply beveled sides, should be used so the fuel bottle has less freedom to move around during operation. The operating instructions that come with the engine are poorly written, badly translated, and do not provide any significant detail on engine construction or maintenance (e.g. how to replace a broken cylinder, or remove it for cleaning). I did not find any instructions or contact info for ordering replacement/repair parts. A more detailed manual, showing a "blow up" diagram of all the engine's parts, along with care and maintenance instructions, which has been properly proofed and translated would have been appreciated, esp. since this is the sort of "toy" that someone who is mechanically-minded (and thus have an appreciation for design details) is going to have an interest in. I would have also appreciated some electrical specs on the attached generator - not the whole datasheet, just some basic details such as rated output voltage and current when used with this powerplant. I found one _very_ minor "fit and finish" flaw after a close examination of the entire engine - the pilot hole in the flywheel, where the setscrew that secures the flywheel to the drive shaft is inserted, was drilled a bit unevenly - it is not perfectly circular on my model. However, this very minor flaw does not adversely affect the operation of the engine or appear to have any notable effect on the flywheel balance.
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Reviewed in the United States on September 21, 2018 by Mark Schultz
Style: SC02M
This is a very impressive machine, with superb craftsmanship and flawless mechanical operation. It is a very attractive display item that I plan to keep on my desk at work, with a supply of fuel and a lighter handy to demonstrate to curious passers-by. My fellow engineer coworkers have also been very impressed with it. It runs surprisingly fast, and is not overly loud, but does make some noise. I am so impressed with its good qualities that I did not deduct a star for the failings of the instructions that came with it. I'll never understand why Chinese companies do not take the simple extra step to have someone who has English as a first language proof-read and clarify the almost universally poor English translations that ship with their products. The instructions that come with this are quite typical of that problem. For example: "Heating 20 seconds, and then began to gently turn the flywheel, (follow the starting direction shown in the figure) until the flywheel can since Dynamic operation so far." Yes, most will be able to figure out what that means, but why not state it in proper English? I'll note that the instructions cover both a Stirling engine and a steam engine. Paper is cheap, why not have separate instructions for each model? And the instructions for the Stirling engine include a figure of a different type of engine than this, leaving me wondering initially if I received the wrong instructions. The model comes with several loose parts, some of which are spare parts, like and extra of each glass cylinder and generator drive belt, which is nice But there is no list of parts with a description, including those needed for operation. Again, it was easy enough to figure out, despite no instructions. But should either of the cylinders need replacing, there are no instructions for how to do this. There is an LED light that also came loose. This is a very cool, color-changing LED that demonstrates that the engine converts heat into usable electricity. Why it is not assembled to the model as delivered, nor even mentioned anywhere in the instructions is a mystery to me. It may also be a mystery to anyone who is not mechanically (or electrically) inclined that you have to spread the LED wires apart and bend the ends so they can fit into the holes in the terminals on the outside of the generator. The alcohol lamp had 3 parts, the glass bottle, wick, and lid. The lid is not threaded and just sits on top of the bottle, so be careful not to knock the bottle over while lit, or you'll have a little Molotov cocktail on your hands. When feeding the wick through the hole in the lid, some instruction as to how far the wick should extend would have been nice. I found that about 1/16" is sufficient, and more extension to give a larger flame did not seem to make the engine run any faster. So far, I've transported it back and forth to work a couple times and put a piece of plastic wrap over the wick and wound a rubber band around the bottle neck to seal it. A bottle with a seal-able lid would be a nice improvement. But I suppose the alcohol is cheap enough that you could just dump out any unused fuel if moving it. As is, all the alcohol in the bottle will evaporate rather quickly with the wick exposed to the air. (Here's a tip for filling the bottle from a can of alcohol without spilling more than goes in the bottle: dip a straw down into the can of alcohol, seal the top of the straw with a finger, then put the straw into the bottle and release your finger. Repeat until bottle is full.) Despite the above nits, I think this is a very cool "toy", especially being a mechanical engineer with a deeper understanding of how it works, and am very happy I bought it. But I don't think you need to be an engineer to enjoy this. I thought the price was a little steep, but feel better about the price after seeing the high quality design, workmanship, and materials used. Oh, since I plan to keep it on display at work, I am concerned about dust collecting and possibly gumming up the linkages and power cylinder that is open to air, so I bought a mini-football helmet display case that it perfectly fits in...see the picture. The case is a "Ballqube Mini Football/Helmet Display Box".
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Reviewed in the United States on October 11, 2017 by Jim Meadows Jim Meadows
Style: SC02M
This is a delightful little engine. I'm amazed by the precision of the craftsmanship and the reliability at this price point. It comes fully assembled, works flawlessly every time, and is very fun to watch and tinker with. If I could improve anything about it, it would be: 1. A heavier base, or some sort of counterbalance: The engine does vibrate at high speed and will occasionally try to walk off my desk. The base, and the engine itself are already quite heavy, so I think the right solution would be some sort of counterbalance to eliminate the vibration. But simpler solution might be to add some balast. 2. Power connectors for the little generator: I've enjoyed powering small items with the generator. LEDs, a little heating coil, some motors, etc. It would be nice if this came with terminals and a switch for connecting various items. Clearly this is something you can add on your own, but it would be a nice addition. Overall it's been wonderful fun. I think the electrical power output tops out somewhere in the 2 watt range, which is enough to do some nice demonstrations. And it looks beautiful sitting on a desk or shelf when not in use. Overall I'd highly recommend it to someone looking for a fun, easy Sterling engine.
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Reviewed in the United States on November 23, 2022 by Scott L