Construa um MOTOR MOVIDO A VELA (MOTOR STIRLING)

Manual do Mundo

19 Jan 201615:01

Summary

TLDRThis script outlines a DIY tutorial on crafting a candle-powered engine, a complex yet fascinating project that can be accomplished with household items. It involves assembling a chamber using aluminum foil and a sardine can, creating a flywheel with CDs, and utilizing a balloon pump and fishing line for motion. The engine operates by the heat from a candle causing air to expand, pushing a bladder which in turn drives a piston. The tutorial also offers insights into the mechanics and suggests similar projects for further exploration.

Takeaways

🔧 The video teaches how to build a heat engine powered by a candle.
🏆 The engine design was inspired by a contest winner, Tiago Casella, from 2012.
📘 The construction process is based on the 'Manual do Mundo', a specialized guide.
🔗 The video credits a specialized channel run by Vagner for detailed tips on building the engine.
🛠️ The engine requires common household items and a few inexpensive parts like connectors and fishing line.
⚙️ Key components include two shower connectors, fishing line, a 2mm diameter drill bit, and hot glue.
🔩 The engine chamber is made by combining an aluminum can with a sardine can.
🔄 The engine's motion is maintained by a flywheel made from glued CDs.
💧 A 'bombril' (plastic bottle) is used to create a piston mechanism, with a fishing line acting as a connecting rod.
♻️ The engine operates on a cycle of heating and cooling, causing the piston to move up and down, thus generating motion.

Q & A

What is the main purpose of the video described in the transcript?
-The main purpose of the video is to teach viewers how to build a candle-powered motor using easily accessible materials.
Who is Vagner and why is he mentioned in the video?
-Vagner is the person behind a specialized channel about this type of motor. He is mentioned for providing valuable tips and for winning a contest in 2012.
What materials are needed to build the motor chamber according to the script?
-To build the motor chamber, you need an aluminum can, a can opener, pliers, and white glue.
What is the role of CDs or DVDs in the motor construction?
-CDs or DVDs are used to create the flywheel that maintains the motor's momentum.
What is the function of the fishing line with a diameter of 0.37 millimeters?
-The fishing line is used to connect different parts of the motor and to create tension in the mechanism.
How are shower connectors used in the motor construction?
-Shower connectors are used to extract metal pieces that are later used as components in the motor's assembly.
What is the purpose of the Bombril glue mentioned in the script?
-The Bombril glue is used to create a piston by making a spiral with a fishing line and attaching it to a clip.
How is the balloon's bixiga used in the motor's construction?
-The bixiga of a balloon is used to create a valve mechanism that helps in the movement of the motor's piston.
What is the function of the 'virabrequim' in the motor's operation?
-The 'virabrequim' acts as a crank that converts the linear motion of the piston into rotational motion for the motor.
How does the motor's operation cycle work?
-The motor operates in a cycle where the heated air from the candle expands, pushing the piston up, and then cooling down, causing the balloon to contract and pull the piston back down.
What additional projects are suggested at the end of the script?
-The script suggests building a candle-powered boat and an electric motor powered by a battery as additional projects.

Outlines

00:00

🔧 Building a Stirling Engine from Scratch

This paragraph introduces the Stirling engine project. The Stirling engine is powered by a candle and runs on thermal energy. The video aims to teach viewers how to build this complex motor using materials commonly found at home. The narrator acknowledges receiving valuable advice from an expert on such motors and mentions a previous experiment related to this motor. They also list essential materials such as wire connectors, fishing line, drill bits, and glue. The instructions begin with preparing the motor’s chamber by using aluminum cans and tuna cans, focusing on precise cutting and assembly.

05:01

🛠 Constructing the Engine's Flywheel and Piston

This section focuses on constructing the flywheel and the piston components of the engine. The flywheel is made by gluing two CDs together with washers attached using hot glue. Metal pieces from a wire connector are used to complete the assembly. The paragraph then shifts to crafting a piston using steel wool, a large paper clip, and fishing line. Detailed steps are provided on how to mold these materials into functional parts. Special attention is given to ensuring smooth motion within the motor chamber while maintaining precision.

10:01

🔄 Making the Crankshaft and Upper Engine Assembly

The third paragraph delves into the creation of the crankshaft, a crucial component resembling a crank but more complex. Using paper clips and connectors, the instructions guide viewers on how to precisely measure, bend, and assemble the pieces. Afterward, attention shifts to the upper engine assembly, requiring another aluminum can with carefully measured and drilled holes. The paragraph concludes with instructions on how to perforate the can for ventilation, using various drill bit sizes. The complexity of the task is emphasized, reflecting the precision needed to make the motor functional.

Mindmap

Keywords

💡Engine

An engine is a machine designed to convert energy into mechanical motion. In the context of the video, the engine is a homemade device powered by the heat from a candle, demonstrating the conversion of thermal energy into mechanical work. The script describes the process of constructing this engine, which is a central theme of the video.

💡Candle

A candle is a simple wax-based object with a wick that produces heat when lit. In the video, the candle serves as the heat source for the homemade engine, expanding the air inside the can and initiating the motion of the engine. The script mentions placing a 'velhinha' (little old lady, colloquial for a small candle) inside a larger can to heat it up.

💡Connector

A connector in this context refers to a plumbing part used to join two sections of the engine together. The script specifies the need for two types of connectors, one for 25 feet and another for 30 feet, indicating their importance in the assembly of the engine.

💡Fishing Line

Fishing line, specifically number 5 with a diameter of 0.37 millimeters, is used in the construction of the engine to create tension and maintain the balance of the moving parts. The script describes using fishing line to secure various components of the engine, such as the CD used as a wheel.

💡Aluminum Can

An aluminum can is used as a structural component of the engine. The script details the process of modifying an aluminum can, such as removing the top and smoothing the edges, to create the chamber for the engine.

💡Tin Can

A tin can, specifically a sardine can, is used in conjunction with the aluminum can to form the engine's chamber. The script describes making a cut in the tin can to fit it with the aluminum can, using glue to seal the connection.

💡CD/DVD

CDs or DVDs are repurposed as wheels in the engine. The script mentions gluing two CDs or DVDs together with white glue to create a wheel that maintains the engine's momentum.

💡Piston

The piston is a crucial component in the engine that moves up and down, transferring the motion generated by the expanding air. The script describes placing the piston inside the aluminum can and ensuring it moves freely yet remains close to the edge of the can.

💡Crankshaft

The crankshaft, referred to as 'virabrequim' in the script, is a mechanical part that converts the linear motion of the piston into rotational motion. The script details the construction of a makeshift crankshaft using a clip and metal connectors from a plumbing part.

💡Balloon

A balloon, or 'bixiga' in the script, is used to create a diaphragm for the engine. The script describes cutting and shaping a balloon to fit into a mineral water bottle, which is then used as part of the engine's mechanism to move the piston.

💡Thermal Expansion

Thermal expansion is the process by which materials expand when heated. In the video, the heating of the air inside the can due to the candle's flame is an example of thermal expansion, which is essential for the operation of the engine as it causes the air to push against the diaphragm and create motion.

Highlights

Introduction to building a candle-powered engine with household items.

Acknowledgment to Leão Vagner, a specialist in this type of engine, for his valuable tips and guidance.

Reference to a contest won by Tiago in 2012, related to the manual of the world.

List of materials needed for the engine, including connectors, fishing line, and hot glue.

Step-by-step guide to creating the engine chamber using an aluminum can and a sardine can.

Instructions on making the motor's flywheel using CDs or DVDs and white glue.

Explanation of how to create the piston using a Bombril wrapper and a fishing line.

Details on crafting the engine's crankshaft using a balloon and a mineral water bottle.

Description of the watertight seal for the engine using hot glue and careful assembly.

Assembly of the top part of the engine with an aluminum can and specific measurements for holes.

Process of creating a perforated can to allow air movement within the engine.

Mounting the crankshaft and connecting it to the CD and the remaining metal connector.

Complex task of inserting the two washers into the crankshaft and securing them tightly.

Explanation of the engine's operation using the heat from a candle to expand air and create movement.

Demonstration of the engine's functionality with the use of cold water to cool down the cycle.

Innovation of using household items to create a simple yet effective heat engine.

Educational value of understanding the working principles of the heat engine through this project.

Additional projects suggested by the Manual of the World for further learning and experimentation.

Encouragement for viewers to learn and replicate these projects for a deeper understanding of mechanics.