How to Build a STEM DIY Twin Aircraft | Step-by-Step Guide

✨ Introduction

Ever wondered how airplanes work and wanted to build your own model? In this guide, we’ll show you how to make a twin-propeller aircraft from scratch. This project is simple, fun, and educational — a great way to learn about aerodynamics, thrust, and lift. By the end, you’ll have your very own working aircraft model!

🔧 What is a Twin Propeller Aircraft?

A twin-propeller aircraft is a small model plane powered by two electric motors with propellers. The motors generate thrust, while the wings provide lift. This setup mimics the structure of real airplanes and helps demonstrate how aircraft fly.

🛠️ Step-by-Step Assembly

1. Unboxing and Preparation

Open your kit and check that all parts are included. Lay them out neatly so you can easily follow the steps.

🔎 All parts ready — motors, propellers, wires, battery box, wings, wheels, and wooden fuselage.

2. Install the Battery Box

Connect the red wires to the left side of the battery box and the black wires to the right side. This will power your motors later.

🔋 Battery box connected with red and black wires for power.

3. Install the Motors

Attach the red wires to the left terminals of the motors and the black wires to the right terminals. Secure both motors between the two wing pieces using double-sided tape. Finally, attach the propellers to the motor shafts.

⚙️ Motors wired

4. Install the Wing Assembly

Now place the completed motor-and-propeller assembly inside the wings. Make sure everything is firmly attached.

Secured the motor between the wings with double-sided tape.

5. Assemble the Aircraft Body

Prepare the long wooden fuselage. Use double-sided tape to attach the hole block, non-hole block, curved block, and slanted block. This forms the structure of your aircraft.

📏 Wooden fuselage with blocks (hole, non-hole, curved, slanted) attached in place.

6. Install the Wheels

Insert the two metal axles through the blocks at the bottom of the fuselage. Attach the wheels to the ends of the axles. These provide balance and allow smooth movement forward.

🚗 Axles inserted through blocks, wheels added for stability and smooth movement.

7. Mount Wing and Battery Box

Carefully attach the wing-motor assembly on top of the fuselage. Then, secure the battery box to the fuselage using double-sided tape.

🔧 Wing assembly and battery box secured on top of fuselage.

8. Final Test

Switch on the battery box and watch the propellers spin! Place your aircraft on a smooth surface and let it glide forward under its own thrust.

✅ Propellers spinning, aircraft ready to glide forward!

📦 Where to Buy

Shopee:

1. Twin Aircraft

Lazada:

1. Twin Aircraft

TikTok:

1. Twin Aircraft

Aliexpress:

1. Twin Aircraft

✅ Conclusion

You’ve now built your very own twin-propeller aircraft! 🎉 This DIY project is not only fun but also a great way to understand the science of flight.

👉 Try experimenting with propeller size, wing angle, or motor speed to see how performance changes.

And if you enjoyed this project, don’t forget to Like, Share, and Subscribe to our YouTube channel for more step-by-step tutorials!

TTRacing Duo V4 Unboxing & Assembly Guide | Full Setup & Function Test

The TTRacing Duo V4 is one of the most popular entry-level gaming chairs, offering comfort, adjustability, and stylish design for gamers and office users alike. If you’ve just received your chair, congratulations! In this blog, we’ll guide you through the unboxing, assembly, and testing process so you can set it up quickly and enjoy hours of comfort.

TTRacing Duo V4 gaming chair.

What’s in the Box?

When you open the package, you’ll find all the essential parts neatly arranged:

• Seat base

• Backrest

• Armrests (left & right)

• Wheelbase with 5 caster wheels

• Gas lift & protective cover

• Control mechanism (tilt & height adjustment)

• Screws and Allen key (tools included)

Assembly Steps

Step 1 – Attach the Wheels

Insert all five caster wheels firmly into the wheelbase until you hear a click.

Step 2 – Install the Gas Lift

Place the gas lift into the center of the wheelbase and cover it with the protective sleeve.

Step 3 – Assemble the Seat Base

Flip the seat base upside down, align the control mechanism, and secure it with screws using the Allen key.

Step 4 – Attach the Armrests

Position the armrests on both sides of the seat base and fasten them securely with screws.

Step 5 – Connect the Backrest

Align the backrest with the seat base, then secure both sides with screws.

Step 6 – Mount the Seat

Carefully place the seat onto the gas lift. Ensure it sits firmly in place.

Function Testing

Once assembled, it’s time to test the chair’s features to make sure everything works smoothly.

1. Back Pressure Adjustment
   
   

   

   Rotate the knob under the seat to tighten or loosen the back pressure.

   
   

2. Chair Rotation
   
   

   

   Sit on the chair and check for smooth 360° rotation.

   
   

3. Height Adjustment
   

   

   Use the lever to raise or lower the seat to your preferred height.

   
   

4. Tilt Mechanism
   

   

   Pull the lever outward to unlock the tilt, and push it back in to lock.
   
   

📦 Where to Buy

Shopee:

1. TTRacing Duo V4

Lazada:

1. TTRacing Duo V4

TikTok:

1. TTRacing Duo V4

Final Thoughts

The TTRacing Duo V4 is simple to set up and offers excellent comfort for long gaming or working sessions. Its adjustable features allow you to customize your seating experience easily. Whether you’re gaming, studying, or working from home, this chair is a solid choice.

9.9 Sale 2025 – Biggest Discounts of the Year!

The much-anticipated 9.9 Mega Sale is finally here! Customers can now enjoy unbeatable savings on a wide range of products. Whether you shop on Shopee, Lazada, or TikTok Shop, this 9th of September is your chance to grab the best deals of the season.

9.9 Mega Sale

What You’ll Get:

• Up to 50% OFF selected items

• Exclusive vouchers for even more savings

• Fast delivery and trusted quality

📅 Mark your calendar: 9th September only!

Shop now, save more, and celebrate 9.9 with MY Creative Engineering.

SYM Jet Power 125 Fuel Cock Replacement – Fix Fuel Leaks & Starting Problems

The fuel cock is a small but important part of your SYM 125 Jet Power scooter. It controls the fuel flow from the tank to the carburetor, ensuring smooth engine performance. Over time, this part can wear out or start leaking, which leads to fuel delivery problems. In this guide, we’ll show you step-by-step how to diagnose the symptoms of a bad fuel cock and replace it with a new one.

Fuel cock replacement.

Symptoms of a Faulty Fuel Cock

Before jumping into replacement, here are some signs that your fuel cock might need attention:

Fuel is leaking underneath the scooter.

• Engine stalling or hesitation due to restricted fuel flow.

• Hard starting, especially after the scooter has been parked for a while.

• Strong smell of petrol near the scooter.

If you experience these issues, it’s a good idea to check and replace the fuel cock.

Removing the Fuel Tank

1. Remove the flange bolt securing the fuel tank.
   

   

   Remove 2 flange bolts. 

2. Disconnect the fuel unit connector.
   

   

   Disconnect the fuel unit connector.

3. Detach the fuel tube and vacuum tube from the fuel cock.
   

   

   Remove fuel and vacuum tubes.

   
   

Removing the Fuel Cock and Strainer

1. Use an adjustable plier to remove the old fuel cock.
   

   

   Remove the fuel cock.

2. Use long-nose pliers to remove the strainer.
   

   

   Remove the strainer.

Installing the New Fuel Cock

1. Take the new fuel cock and strainer set included in the box.
   

   

   Install the strainer and secure the new fuel cock in place.

2. Reinstall the fuel tank in reverse order of removal:
   
   

   

   Reconnect the fuel and vacuum tubes.

   
   

   

   Reattach the fuel unit connector, position the tank back, and tighten the flange bolt

Testing the Repair

Start the engine to confirm smooth fuel flow.

Check for any fuel leaks.

If everything is working fine, the job is done!

Conclusion

Replacing the fuel cock on a SYM 125 Jet Power scooter is a quick and straightforward repair that helps prevent fuel leaks and keeps your scooter running smoothly. With just a few tools and careful steps, you can complete the job yourself.

📦 Where to Buy

Shopee:

1. Spanner Set
2. Screwdriver Set
3. Fuel Cock

Lazada:

1. Spanner Set
2. Screwdriver Set
3. Fuel Cock

TikTok:

1. Spanner Set
2. Screwdriver Set
3. Fuel Cock

Aliexpress:

1. Spanner Set
2. Screwdriver Set
3. Fuel Cock

✅ Don’t forget to like, share, and subscribe to our channel for more scooter repair guides!

Best Affordable Bench Power Supply? KUAIQU SPS-C3010 Review

If you’re into electronics, DIY repairs, or lab projects, a reliable DC power supply is one of the most useful tools you can have on your bench. Today, we’ll look at the KUAIQU SPS-C3010, an affordable and compact DC adjustable power supply that goes up to 30 volts and 10 amps.

KUAIQU SPS-C3010 DC power supply

📦 Unboxing the KUAIQU SPS-C3010

The unit comes securely packed, making sure everything stays safe during shipping. Inside the box, you’ll find:

• KUAIQU SPS-C3010 main unit

• Power cord

• A pair of test leads with alligator clips

• User manual

Everything you need to get started is included — no extra accessories required.

⚡ First Setup

Before testing, simply connect the power cord to the unit and plug it into a socket. Once switched on, the digital display lights up clearly, showing both voltage and current settings.

Connect the power cord to the unit.

Push to switch on the unit.

🔍 Testing the Precision

We tested the unit in two ways:

1. Direct Multimeter Test

By connecting the multimeter probes directly to the output terminals, the readings were very close to the built-in display. The fine adjustment knobs make it easy to set the exact voltage you want.

Connect the multimeter probes to the output terminals unit.

2. Test with Alligator Clip Leads

Next, we tried the included test leads with alligator clips. After connecting them to the output terminals and attaching them to the multimeter, the readings were still accurate, showing that the supplied leads work well.

Connect the test leads with alligator clips.

⚠️ For current testing, we skipped it this time since we didn’t have a high-power load resistor. However, according to the specs, the unit supports up to 10A output current.

📦 Where to Buy

Shopee:

1. KUAIQU SPS-C3010

Lazada:

1. KUAIQU SPS-C3010

TikTok:

1. KUAIQU SPS-C3010

Aliexpress:

1. KUAIQU SPS-C3010

🔚 Video

Your KUAIQU SPS-C3010 power supply is now unboxed and tested! ⚡ Enjoy the clear display, smooth controls, and accurate output — ready to power up your next electronics project with ease.

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