How to build a lego helicopter?

How to Build a LEGO Helicopter

Building a LEGO helicopter may seem like a daunting task, but with the right guidance, you can create a functional and impressive RC helicopter using LEGO bricks and motors. In this article, we will walk you through the step-by-step process of building a LEGO helicopter, highlighting crucial points and providing tips along the way.

Starting with the Basics

Before we dive into the assembly process, it’s essential to understand the fundamental parts of a helicopter:

• Tail rotor: Provides stability to the helicopter
• Main rotor: Lifts the helicopter off the ground
• Instruments: Control the motion of the helicopter

Gathering the Necessary Parts

LEGO helicopter kits are typically available at LEGO stores, online marketplaces, and specialty hobby shops. In this article, we’ll be using the LEGO Mini Cooper as a base car and adding custom parts. You’ll need the following:

• LEGO mini cooper kit
• Bricks, plates, tiles, and other elements of your choice
• 4-6 LEGO motors (depending on motor size and helicopter design)
• LEGO battery box and battery brick
• LEGO M-motor gearbox ( optional)
• LEGO wiring and jumper wires

Step 1: Preparing the base car

Begin by building the foundation of your helicopter using the LEGO mini cooper kit.

• Use the provided manuals to assemble the car in its entirety.
• Then, carefully disassemble certain parts to create the primary structure for your helicopter

Step 2: Building the Main Rotor

• Use Technic bricks to connect the car’s body pieces, creating a sturdy mount for the main rotor (see table: Main Rotor Design Option)
• Measure and cut LEGO beams to create rotor blades
• Attach these blades to the main mast using LEGO pins, ensuring stability and balance (see figure: Main Rotor Design Option)

Main Rotor Design Option



|  Blades  |  Mast Design  |

|  =======  |  ==========   |

|  5-7     | Single mast  |

|          | Double mast  |

Step 3: Building the Tail Rotor

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• Add LEGO tiles and plates to create additional stability for the tail (see figure: Tail Rotor Design)
• Include LEGO motors and gears to power this rotor (see table: Tail Rotor Motor Set-up)

Tail Rotor Design



tail rotor motor

-------------------------

* Motor: 9090, 939M, or 956D

* Gear ratio (1:1 or variable)

Step 4: Building and Connecting the Instruments

1. Construct the **rottle** and **ailerion** mechanisms using **LEGO gears** and **sprockets**; attach them to the steering column and control stick

   • * Add **LEGO sensors** to detect altitude and heading
   • * Install **LEGO transmission** and **LEGO gearbox** for smooth adjustments

   Step 5: Final Assembly, Wiring, and Testing

   • Insert the LEGO batter box and battery brick
   • Connect the 4-6 LEGO motors (depending on motor size and design) to the **Battery box and battery brick
   • Wire components together using **LEGO wiring and jumper wires***
   • Add LEGO M-motor gearbox( optional) for increased propulsion
   • Test your machine, ensuring proper function with the instruments and rotor placement

   Tips and Add-ons

   • Minimize weight: Remove surplus parts or use lightweight substitutions to enhance flight performance

     1. Select the appropriate **LEGO plate and tile** combinations based on design and functionality for the rotor blades

• Enhance details: Incorporate additional items like landing gear, instrument panels, or a rescue basket for a more finished appearance

Conclusion
Building a LEGO helicopter necessitates creativity, patience, and a willingness to make adjustments as needed. Begin with a solid foundation built around the LEGO mini-cooper kit, then emphasize the design and construction phases. Use the guidelines within this article to guide yourself through the process, or feel free to experiment based on your own ideas.

Finalizing Your Creation

With care and precision, you’ve built an impressive LEGO heli copter. It’s essential to test various aspects, such as balancing, weight distribution, rotation speed, and control adjustment. You can further your skills by exploring advanced functions, incorporating sensors, installing a more complex transmission.

Future Development

When you have a solid ground, start experimenting with added features:

• Upgrade to motorized propeller: Add a motor-propeller setup for enhanced velocity
• Implement automated control: Integrate custom-made circuits for automated functionality
• Introducing sensors: Add sensors monitoring altitude, speed, stability, and other factors (see figure: Sensor Positioning)

Sensor Positioning



|  Sensor  |  Use  |

|  ===  |  ===     |

|  Altimiter  |  Monitor        |

|  Gyrosensor  |  Align         |

|  Acceler-ometer  |  3D orientation  |