[Tutorial simples] Como fazer motor Stirling caseiro passo a passo - As do Stirling engine

Introduction

This tutorial will guide you through the process of building a homemade Stirling engine, specifically the Gama model. Utilizing easily accessible and recyclable materials, you can create an efficient and educational model. This project is ideal for beginners, providing a practical introduction to the mechanics of Stirling engines.

Step 1: Gather Materials

To successfully build your Stirling engine, you will need the following materials:

• Steel wool (preferably Bom Brill for optimal results)
• A cylinder with a diameter of 63 mm for the working piston
• A displacer piston measuring 35 mm in length with a total stroke of 38 mm
• High-temperature silicone adhesive for sealing
• Electrical connectors (6 mm) for wiring
• Additional components for the crankshaft and flywheel (consult linked tutorials for specifics)

Step 2: Create the Displacer Piston

• Use steel wool to form the displacer piston.
• Ensure the displacer piston is lightweight, aiming for approximately 16 grams.
• Avoid friction between the displacer piston and the cylinder to enhance efficiency.

Step 3: Construct the Working Piston

• The working piston should have a total stroke of 16 mm.
• Ensure it fits snugly within the 63 mm cylinder, allowing for proper movement without significant air leakage.
• The design of the working piston should accommodate potential micro-leaks, which will not hinder engine performance.

Step 4: Assemble the Crankshaft

• Refer to the linked tutorial on making a crankshaft using bicycle spokes to create a simple yet effective design.
• Ensure the crankshaft is balanced to facilitate smooth operation.

Step 5: Create the Flywheel

• Use materials from the linked tutorial to construct a flywheel that suits your design.
• A well-designed flywheel will help maintain momentum and improve engine efficiency.

Step 6: Seal the Engine

• Apply high-temperature silicone adhesive to seal the head of the engine.
• This will prevent air leaks, which are crucial for maintaining pressure and efficiency in the engine.

Step 7: Final Assembly

• Connect all components carefully, ensuring that all parts fit together without excessive force.
• Ensure that the engine is well-aligned and that the pistons move freely within their respective cylinders.

Step 8: Testing the Engine

• Once assembled, test the engine to ensure it operates smoothly.
• Make adjustments as needed to improve performance, such as reducing the displacer stroke to 28 mm for increased RPM.

Conclusion

Building a Stirling engine is a rewarding project that introduces fundamental principles of thermodynamics and mechanics. By using easily sourced materials and following the steps outlined, you can create an efficient model suitable for educational purposes. For further improvements, consider experimenting with different piston sizes and materials to optimize performance. Happy building!