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Description
Stirling Engine Kit Motor Model DIY Educational Steam Power Toy Electricity Learning ModelStirling Engine Kit Motor Model DIY Educational Steam Power Toy Electricity Learning Model Stirling engines are unique heat engines because of their theoretical efficiency is almost equal to the theoretical maximum efficiency, Called the Carnot cycle efficiency. The Stirling engine is heated by gas expansion, cold contraction generate power. Description: Name: Stirling Engine Hot Air Model Material: metal,glass Color: gold Size: 165x87x95mm Features:
Stirling Engine Kit Motor Model DIY Educational Steam Power Toy Electricity Learning Model
Stirling engines are unique heat engines because of their theoretical efficiency is almost equal to the theoretical maximum efficiency,
Called the Carnot cycle efficiency. The Stirling engine is heated by gas expansion, cold contraction generate power.
Description:
Name:Stirling Engine Hot Air Model
Material:metal,glass
Color:gold
Size:165x87x95mm
Features:
-This is an external combustion engine in which the fuel is burned continuously, and the piston is moved by the expansion of air (or helium or hyd rogen) as a medium, and the expansion gas is cooled in the cold chamber, and the cycle is repeated. Only a small alcohol lamp, you can make it fast rotation and strong power.
-As the external combustion engine to avoid the traditional internal combustion engine of the explosion to do work, in order to achieve a high efficiency, low noise, low pollution and low operating costs.
-The biggest advantage of the external combustion engine output and efficiency from the influence of altitude, very suitable for high altitude areas.
- Aerodynamics are rich in knowledge of physics, single cylinder combustion engine. Engine principle is intuitive, educational toys, teaching experimental equipment can effectively cultivate children's interest in learning can also be used for classroom teaching, more intuitive and easy to understand.
Instructions:
-The engine model on the horizontal position by hand toggle the flywheel to see if smooth, if there is a strong sense of raw astringent, check the connection rod is normal, whether the cylinder oil and dust, and if so, please use toilet paper to erase Not smooth. Toggle the flywheel feel pressure rebound within the cylinder body is a normal phenomenon, the cylinder is sealed.
-The packing bag of alcohol lamp cotton wear into the metal cap lamp.
-Please go to the pharmacy to buy 95% purity alcohol, anhydrous industrial alcohol better. Fill the alcohol lamp to less than two-thirds.
-Alcohol lamp to the alcohol lamp, at the premise of ensuring safety, ignite the alcohol lamp about 2 minutes after the flywheel, until the flywheel automatic operation so far, the whole process of heating, hands may not touch.
-Led lights can be directly into the generator output interface, if not inserted, the exchange can be positive and negative, led a long foot for the cathode.
Note:
-There will be the operation of steam,when the steam too much time, the engine will stop working,
inside and outside the needle often set aside to reduce friction
-Do not rotate the nut too tightly, otherwise the glass is broken, if the piston is cracked,
can be bonded with glue.
-The alcohol lamp wick do not touch the glass, do not get too tight ring
-Pulling the piston connecting rod can not force the front end, because the front
end is easy to break
Package include:
1 x Stirling Engine
1 x Alcohol Burner
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.6 ★★★★★
Based on 1083 reviews
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Product Reviews
★★★★★ 5
Solid Next-Generation AVR.
Style: AVR-X2800H
I bought this for my 2.1 system used for TV (4K with 120 Hz), movies, video games (4K with 120 Hz), turntable, and digital audio. I have previously used Denon, Marantz, and NAD AVRs. I was using an old NAD without HDMI, and I really wanted everything to synch up.
I tried out a stereo receiver since I am only running a 2.1, but I didn't mesh for me. It was fine, but I felt it was lacking especially around multi-channel audio and the lack of an LFE output for the sub.
The 2800H was very intuitive and easy to set up right out of the box. Hooked up to a TV, it runs through everything step-by-step. After the initial setup, I downloaded and ran a firmware update. When I finally got to use my ears, the sound was already superior to what I had from the mid-2000s 60-watt-per-channel NAD AVR with an external Bluetooth/DAC and PCM cable from the TV AND the brand-new, 2023 model HDMI-equipped stereo receiver (that cost me more than the 2800H). After running Audyssey, the sound only got better. Then, I set up my 2 front speakers on a bi-amp setting, utilizing two of my unused channels to drive my woofer and tweeter with discrete power sources.
The eARC and settings makes turning on my TV, PS5, and AVR easier and quicker. I enjoy the fact that I can use any remote to fix the volume so there is always a remote close when we need a quick mute or change in the volume.
I find the HEOS app to be a little clunky, but I am loving it anyway. I can run high-definition audio through streaming, which is a huge improvement from using Apple Airplay 2 or Bluetooth. It also lets me talk on the phone, send and receive messages, etc. without interrupting the music.
Right now, I am still tweaking my settings, but I can definitely say that the sound is really good. Have I heard better? Sure. This isn't an 11-channel receiver with Dirac, a 200 watt-per-channel, high-end "audiophile"-grade component, or a tube amp. It is best at multi-channel audio and does really well for music, especially with a good set of speakers and quality sub with parametric EQ.
My speakers have are low sensitivity (84dB), and the 2800H puts out enough grunt to listen give nuance and life to music in listening position, to bump the music to listen in my kitchen two rooms over, or watch at theater-level volume in my medium-sized living room with 8-foot ceilings. This thing is getting daily use, and it is more than enough to get the job done in style. For what I need, the 2800H is spot on.
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Reviewed in the United States on November 9, 2023
★★★★★ 5
High-Quality Wire That’s Worth Every Foot
Size: 14/2 AWG-200 FT, Color: White
The GEARit 14 Gauge Speaker Wire (200 ft, CL2 rated) has been a great addition to my home audio setup. The 14 gauge thickness feels solid and gives me confidence that I’m getting good signal transfer without unnecessary loss, even over long runs.
The CL2 rating is a big plus — it’s reassuring to know this cable is safe and approved for in-wall installation if I ever decide to run speakers through the walls rather than on the surface.
What I like most:
Flexible yet strong — easy to pull through studs and around corners
Clear polarity markings — no guesswork when wiring speakers
Smooth insulation — doesn’t snag or tangle while measuring and cutting
Good value for 200 ft — plenty to cover multiple rooms or channels
Whether you’re doing a DIY install or upgrading your audio system, this speaker wire delivers solid performance and peace of mind. Highly recommended!
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Reviewed in the United States on February 21, 2026
★★★★★ 5
Quality wires
Size: 14/2 AWG-200 FT, Color: White
My speakers 🔊 are working much better and the sound is a lot better
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Reviewed in the United States on May 4, 2026
★★★★★ 5
Good product
Size: 14/2 AWG-200 FT, Color: White
Exactly what I was looking for.
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Reviewed in the United States on April 27, 2026
★★★★★ 5
Great Wire
Size: 14/2 AWG-200 FT, Color: White
Great wire for home surround system. Pulled easy.
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Reviewed in the United States on March 12, 2026