SKU: 333497243

Stirling Engine Kit Single Cylinder Big Flywheel Travelling Wave Thermoacoustic Engine

Sale price$26.99 Regular price$29.99
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Description

Stirling Engine Kit Single Cylinder Big Flywheel Travelling Wave Thermoacoustic EngineStirling Engine Kit Single Cylinder Big Flywheel Travelling Wave Thermoacoustic Engine Features: .. How does a thermoacoustic Stirling engine work? The thermoacoustic engine is a particular type of Stirling engine, which has been proposed as an electricity generator for space travel using radioisotopes as the heat source, among other applications.. The thermoacoustic engine works by converting sound waves into motion. The sound waves are generated by

Stirling Engine Kit Single Cylinder Big Flywheel Travelling Wave Thermoacoustic Engine

Features:

.. How does a thermoacoustic Stirling engine work?
The thermoacoustic engine is a particular type of Stirling engine, which has been proposed as an electricity generator for space travel using radioisotopes as the heat source, among other applications.. The thermoacoustic engine works by converting sound waves into motion. The sound waves are generated by heating one end of a 'stack' of coiled material and allowing the other end to remain cool.

Beautiful appearance and high quality. The main body is made of high quality metal, which is firm and strong.
.The hot cylinder is made of glass, high hardness, high speed and long time running without wear.
.The pursuit of the details, the overall fine grinding, touched very smooth, very metallic and modern technology, to achieve a dual combination of texture and beauty.
.Modular parts are shipped and it's fun to do it yourself.
.Installation method: Install the hot cylinder with the short screw on the beam. When installing, the direction of the cylinder should be in line with the beam; the long screw should pass through the beam hole and then pass through the bracket. When fixing the screw, it must be firm; push the piston gently into the cylinder. After the outer cylinder and other pistons are pushed forward, gently pull the lower piston back and forth by hand to check whether it is flexible. If it is not flexible, it can be lubricated with lead powder. It is forbidden to add any lubricating oil to the piston part; the large flywheel is mounted on the measurement position. Install the connecting rod to the positioning of the flywheel. Use a cotton swab to apply a little oil on the two positioning points. Do not add oil to other parts. Place the metal magnet piece on the bottom of the alcohol bottle so that the magnetic alcohol bottle will be firmly attached. On the engine base.
.This product belongs to the external combustion engine, which makes the external combustion of the fuel heated, and the expanded air (helium or hydrogen) acts as a medium to move the piston. The expanding gas is cooled in the cold cylinder, and such a cycle is repeated.
.The fuel is made of high-quality steel wire, which has ultra-high thermal release performance and is safer.
.The engine is placed horizontally during operation, and the alcohol lamp is added to approximately 2/3 of the 95% alcohol and placed under the hot cylinder.
.To ensure safety, ignite the alcohol lamp.
.Continue to heat the hot cylinder for 2 to 3 minutes, one hand presses the engine base plate and the other hand quickly dials the large flywheel engine to run.
.The product is suitable for people over 14 years old.
.Tips: Be careful not to be burnt by high temperature during the operation.
.Do not touch any part that has been fired to avoid burns.

Specifications:

.Color: As Shown
.Material: Metal + Glass
.Product Weight: 500g
.Package Dimensions: 16*8.6*8.5cm
.Package Weight: 600g
.Packing: Box

Package Content:

.1 x Stem Toy

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SKU: 333497243

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4.6 ★★★★★
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hilary
Bozeman, US
★★★★★ 5
Needs to be warmed, but works great for quick face re-application
Style: SPF 50, Size: 1 count (Pack of 1)
I love mineral sunscreen, it really works the best. But I also do not love mineral sunscreen because it's hard to apply. I don't think it matters what you do, they're just always difficult to apply and always leaving the white. This one isn't much different. I'm a scuba diver and my face sunscreen is washed off quickly doing multiple dives. I also get a weird "mask sunburn" if I don't reapply... but since I'm a diver I can't bring myself to buy or wear sunscreen that's not reef safe into the ocean. I was unsure if this would work because it's pretty solid. I threw it in my bag and once the sun warmed it up a little, I was able to apply it fairly easily between dives. I don't think it works unless it's warmed a bit first, but I like it for this purpose.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 26, 2025
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Trevor Vicars
Battle Creek, US
★★★★★ 5
Good sunscreen
Style: SPF 50, Size: 3 Fl Oz (Pack of 1)
It works and it's vegan what's more to say. I repurchase this often.
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Reviewed in the United States on December 12, 2025
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nphoton
Chelsea, US
★★★★★ 3
I Wanted to Like It
Style: SPF 50, Size: 1 count (Pack of 1)
I really wanted to like it because of the great reviews it gets with backpackers and generally with people that don't like "greasy hands syndrome" after applying sunscreen. But after using a stick I found that it's just not that good. The good: small, lightweight container. Not greasy. Good protection, I was in the sun all day hiking multiple days straight and only put on sunscreen twice per day and I didn't have any burning... and I burn easily. The bad: Value: the $12.53 sunscreen container only lasted about 8 days. And that was just my arms, neck, and half my face since I wore a shirt and long pants and a wide brim hat every day when hiking. I would expect this amount of sunscreen to last a lot longer than that on such a limited area. I'm not a big person either. Application, chafing: it's the opposite of greasy, almost chalky. You use the stick to apply to your skin in stripes, then you have to "blend it in" by rubbing with the backs of your hands so your palms don't get chalky. Since the stick is so dry this requires a fair amount of force and it chafes as you rub it around. When your skin a bit sandy it hurts. Application, crumbling: on a chilly but sunny morning, about 45 F, I applied sunscreen and small chunks of the stick crumbled off. I watched precious chunks of the already overpriced sunscreen drop to the ground. Residue: while it's not greasy, it's physical sunblock so it gives your skin the characteristic whitish sparkle. That's to be expected. But what I didn't foresee is it will rub off on anything your skin touches. My gear had white chalk-like marks (technically titania powder?) on my shirt collars, backpack straps, sunglasses, and a few other high-touch items. Overall I think it's a neat idea. I'm not overly disappointed with my purchase. But for $12.50 I expect sunscreen to be easier to apply and for the container to last longer than about 8 days. I can't burn $50/month in the summer months when a single container of chemical sunscreen will do the job. Pro tip: you can buy food-safe 3 oz TSA travel containers. Load one of those up with chemical sunscreen and you have something that beats this in every way except for the greasiness, which you can mitigate by picking a lower SPF sunscreen (the 30 SPF you wear is infinitely better than the 50 SPF you skip!).
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Reviewed in the United States on May 2, 2025
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D. Collins
Draper, US
★★★★★ 5
sunscreen does its job
Style: SPF 50, Size: 3 Fl Oz (Pack of 1)
Works well. Took a little more effort to rub into skin.
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Reviewed in the United States on May 4, 2026
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Verified Purchase
shannon
Alexandria, US
★★★★★ 5
Light and simple
Style: SPF 50 (Pack of 2), Size: 5.5 Ounce (Pack of 2)
Absolutely love this sunscreen! It offers great coverage without feeling heavy or sticky. It absorbs quickly, doesn't leave a white cast, and held up beautifully during long days in the sun. This has become a staple in our family. Hands down the best sunscreen! Lightweight, effective, and comfortable enough to wear all day. It protected our skin even during hours of outdoor sports and activities. I'll definitely be purchasing again! ☀️🧴💛
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Reviewed in the United States on May 30, 2026

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