---
product_id: 80825701
title: "Sunnytech Hot Air Stirling Engine (2-Cylinder) Colourful LED Flywheels Education Toy Electricity Power Generator M14-22-D"
brand: "sunnytech"
price: "$533.88"
currency: USD
in_stock: true
reviews_count: 8
category: "Sunnytech"
url: https://www.desertcart.ec/products/80825701-sunnytech-hot-air-stirling-engine-2-cylinder-colourful-led-flywheels
store_origin: EC
region: Ecuador
---

# Colorful LED flywheels flicker wildly 2-cylinder power engine 4-9V 6061 aluminum alloy & SUJ2 precision parts Sunnytech Hot Air Stirling Engine (2-Cylinder) Colourful LED Flywheels Education Toy Electricity Power Generator M14-22-D

**Brand:** sunnytech
**Price:** $533.88
**Availability:** ✅ In Stock

## Summary

> ⚡ Ignite curiosity with every spin — where science meets spectacle!

## Quick Answers

- **What is this?** Sunnytech Hot Air Stirling Engine (2-Cylinder) Colourful LED Flywheels Education Toy Electricity Power Generator M14-22-D by sunnytech
- **How much does it cost?** $533.88 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/80825701-sunnytech-hot-air-stirling-engine-2-cylinder-colourful-led-flywheels)

## Best For

- sunnytech enthusiasts

## Why This Product

- Trusted sunnytech brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **LED Light Spectacle:** Watch vibrant LEDs flicker wildly, turning science into a captivating light show.
- • **Dual-Cylinder Dynamo:** Experience robust 4-9V power output that mesmerizes with rapid flywheel rotation.
- • **Effortless Operation:** Simply fuel with 95% alcohol, ignite, and enjoy 8+ hours of continuous, smooth running.
- • **Precision Engineered:** Crafted from aerospace-grade 6061 aluminum and SUJ2 hardened components for ultra-durability.
- • **Gift-Ready & Educational:** Perfect for STEM enthusiasts, classroom demos, or as a standout birthday gift that sparks curiosity.

## Overview

The Sunnytech Hot Air Stirling Engine is a finely crafted 2-cylinder educational toy that converts heat into mechanical energy, generating 4-9 volts to power colorful LED flywheels. Built with high-strength 6061 aluminum alloy and precision SUJ2 components, it offers reliable, long-lasting operation fueled by 95% alcohol. Ideal for STEM learning, classroom demonstrations, and unique gifting, this engine combines physics principles with eye-catching design to inspire and educate.

## Description

desertcart.com: Sunnytech Hot Air Stirling Engine (2-Cylinder) Colourful LED Flywheels Education Toy Electricity Power Generator M14-22-D : Toys & Games

Review: Great little engine - Well built and impressive to look at and operate. A great teaching tool and just fun to watch in action.
Review: Carl S. Excellent demonstration of the Sterling Engine Cycle. - I purchased two Sterling Engines. Very satisfied. Here is my 50 cents explanation of the physics. Both Sterling Engines are driven by the external heat source. Heat flows, based on thermodynamic principles, from the bottom heated flat plate to the upper plate, which is at room temperature. Inside the engine is trapped sealed air that flows between two pistons. One piston, located at the hot end, heats up the air contained within the hot cylinder. Heated air expands and pushes the piston. The heated air flows then to the cold piston. The cold piston, exposed to the cooler ambient air, cools the air inside the cylinder. Cooled air contracts (the volume decreases), pulling the cold cylinder as the air volume decreases due to cooling. The two pistons are connected to the flywheel. The cooled air returns to the hot piston and the cycle starts again. The two pistons also pressurize and depressurize the air during the cycle. The cold piston is primarily responsible for driving the flywheel. The flywheel rotation is the mechanical energy created by the Sterling heat engine. An excellent source of information is Wikipedia.

## Features

- TWO CYLINDER ENGINE---- The dual cylinder engine is full of power and the voltage can reach 4-9V. The flywheels will rotate rapidly, making the generator's LED lights flickering wildly. When the machine works, it will be very shocking and attracting eyeballs.
- EXTREMLY FINE CRAFTED ---- The base, bracket and 2 flywheels are made of 6061 aluminum alloy(High strength, weldability and corrosion resistance); Power cylinder and the power piston is SUJ2 material fine grinding surface of special treatment, high hardness. Do not wear high-speed ultra-long-running; Axle joints connected with very high precision miniature bearings, stability without lubrication; Heating cylinder of quartz glass- the heat resistance is better than ordinary glass.
- 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 20 seconds, then give the wheel a gently push, it will run like a charm. It can run for 8+ hours continuous without any broken which test by one customer.
- STRICT PACKING---- glass tube is packaged separately with bubble bag to avoid damage during shipment. easy to take off the package, and put it back to the place.
- 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 science project, Physical/mechanical learning, teacher’s Demo props on the class, birthday gift for friends, families, parents,Many of our customers come from school, colleague, etc.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07G74SSZH |
| Best Sellers Rank | #673,455 in Toys & Games ( See Top 100 in Toys & Games ) #5,892 in Educational Science Kits |
| Customer Reviews | 3.5 3.5 out of 5 stars (59) |
| Is Discontinued By Manufacturer | No |
| Item Weight | 3.64 pounds |
| Item model number | JX01 |
| Manufacturer | Sunnytech |
| Manufacturer recommended age | 15 years and up |
| Package Dimensions | 10.2 x 7.75 x 6 inches |

## Images

![Sunnytech Hot Air Stirling Engine (2-Cylinder) Colourful LED Flywheels Education Toy Electricity Power Generator M14-22-D - Image 1](https://m.media-amazon.com/images/I/71bkiM-WMNL.jpg)

## Questions & Answers

**Q: Where are they made**
A: Made in China.

**Q: How would you characterize the output? (how many amps at how many volts?) i’m interested in using this engine to run something other than an led**
A: It comes with a tiny generator and led lights.  It will barely carry 1 led.
It's fine for external combustion demos
but to small for any practical work.

**Q: WIll the engine run on reduced power output if only one flame is lit?**
A: No, Won’t have enough power to run on one piston while the other is not producing any output. However, you can remove the shaft rubber bands and you’ll run the cylinders independently.

**Q: Can you buy replacement parts anywhere?**
A: i do not know of any place to buy replacement parts. buy one extra unit as a parts source.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great little engine
*by W***Y on October 29, 2020*

Well built and impressive to look at and operate. A great teaching tool and just fun to watch in action.

### ⭐⭐⭐⭐⭐ Carl S. Excellent demonstration of the Sterling Engine Cycle.
*by C***S on December 4, 2020*

I purchased two Sterling Engines. Very satisfied. Here is my 50 cents explanation of the physics. Both Sterling Engines are driven by the external heat source. Heat flows, based on thermodynamic principles, from the bottom heated flat plate to the upper plate, which is at room temperature. Inside the engine is trapped sealed air that flows between two pistons. One piston, located at the hot end, heats up the air contained within the hot cylinder. Heated air expands and pushes the piston. The heated air flows then to the cold piston. The cold piston, exposed to the cooler ambient air, cools the air inside the cylinder. Cooled air contracts (the volume decreases), pulling the cold cylinder as the air volume decreases due to cooling. The two pistons are connected to the flywheel. The cooled air returns to the hot piston and the cycle starts again. The two pistons also pressurize and depressurize the air during the cycle. The cold piston is primarily responsible for driving the flywheel. The flywheel rotation is the mechanical energy created by the Sterling heat engine. An excellent source of information is Wikipedia.

### ⭐⭐⭐⭐⭐ Nice Looking Machine
*by D***N on August 12, 2021*

Nice Looking machine, runs well, a little pricey though, but still nice addition to my desktop

## Frequently Bought Together

- Sunnytech Hot Air Stirling Engine (2-Cylinder) Colourful LED Flywheels Education Toy Electricity Power Generator M14-22-D
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- 95% Ethyl Alcohol, 16oz - Denatured Ethanol Alcohol - Laboratory-Grade, Not for Topical Use - The Curated Chemical Collection

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-02-15*