How to Balance RC Helicopter Blades: A Step-by-Step Guide

How to Balance RC Helicopter Blades: A Step-by-Step Guide

RC helicopters are marvels of modern technology, offering enthusiasts the chance to take to the skies with a miniature flying machine. However, as with any complex device, there are a few critical maintenance tasks that owners must take care of to ensure that their RC helicopter operates safely and efficiently. One such task is balancing the helicopter blades. Balancing RC helicopter blades is essential to ensuring that the helicopter can fly in a stable and predictable manner. When helicopter blades are out of balance, they can cause erratic or unstable flight behavior, posing a danger to the helicopter and those around it. Understanding how to balance the blades of an RC helicopter is a crucial skill for any owner, experienced or otherwise. In this article, we will discuss everything you need to know about balancing RC helicopter blades, from why it is so important to how to get it done correctly.

Why Is Balancing RC Helicopter Blades Important?

Balancing the blades of an RC helicopter is a crucial part of its maintenance and can be the difference between an enjoyable and safe flying experience and a disaster. Here are some reasons why it is so important to balance your helicopter blades:

  • Unbalanced blades can cause instability in flight and make your helicopter difficult to control
  • Unbalanced blades can cause vibrations that can potentially damage your helicopter’s components over time
  • Unbalanced blades can cause excessive strain on the motor and battery, reducing their lifespan

To avoid these issues, you must balance your helicopter blades before every flight. Luckily, there are a variety of affordable blade balancing tools available online, including balancer kits, blade pitch gauges, and magnetic balancers. Some well-regarded RC helicopter websites, such as Horizon Hobby and HeliDirect, offer a variety of these tools at competitive prices. In the next section, we will go over the process of balancing helicopter blades using a blade balancer.

How do you balance the main blades on a RC helicopter?

Here are the steps to balance the main blades on an RC helicopter:

  • Mount the blades onto the helicopter’s rotor head and tighten them.
  • Hold the helicopter and slowly increase the throttle to spin the blades.
  • Observe the blades for any vibration or wobbling. Balance the blades by adding or removing weight from the heavier blade until they spin smoothly.
  • Check the balance again after adding or removing weight until the blades spin smoothly and vibration-free.

There are various items available online for balancing RC helicopter blades, such as blade balancers, blades tuning sets and other tools. Visit hobbyist websites or online stores for more information on these products.

Understanding the Balancing Process

The balancing process involves determining the center of gravity of each blade and adjusting its weight to ensure they are equivalent. Here’s how to balance your RC helicopter blades using a balancer:

  1. Choose a blade balancer that suits your helicopter’s blade size and weight range
  2. Place the balancer on a flat surface that is free of vibrations and magnetic fields
  3. Attach one blade to the balancer and note the highest point on the blade
  4. Make a mark on the blade at the opposite point of the highest point
  5. Rotate the blade by 180 degrees so that the marked point is now at the highest point on the balancer
  6. Use tape or weights to balance the blade by adjusting the position of the weight on the blade
  7. Repeat the process with the other blade and make sure both blades are balanced by putting them back on the blade balancer

Importantly, you should always follow the recommendations of the manufacturer regarding the blade balance. The below table shows some example blade balancers available on the popular RC helicopter website, Horizon Hobby:

Product Name Price Blade Size Range Blade Weight Range
Blade Helicopter Blade Balancer $29.99 up to 850mm up to 140g
Microheli Precision RC Helicopter Mini Blade Balancer $19.99 up to 500mm up to 16g
Venom Blade Balancer $9.99 up to 600mm up to 75g

It is important to note that there are many different types of blade balancers available in the market, and it is important to choose the one that is most suited for your RC helicopter.

How do you balance heli blades?

Balancing helicopter blades is crucial for optimal performance and safe flying. Here are the steps to balance your heli blades:

  1. Identify which blade needs balancing
  2. Suspend the helicopter from a flat surface using a blade balancer tool
  3. Add tape or weight to the lighter blade until it is balanced with the other blade
  4. Adjust the tape/weight until the blades are perfectly balanced
  5. Recheck the balance after each adjustment

There are many blade balancer tools available on the market, such as Dubro Heli Blade Balancer and Mavrikk Heli Blade Balancer. Using these tools can make the process easier and more accurate.

Tools Required for Balancing

To balance the blades of your RC helicopter, you will need the following tools:

  • Blade balancer
  • Adhesive tape or weights
  • Scissors or blade scraper
  • Small weights or tape measure

It is important to ensure that the tools are clean and free of any debris or dirt, as this can affect the accuracy of the measurements during balancing.

Many hobby stores and online retailers sell RC helicopter balancing tools. Here are some popular options:

Horizon Hobby

– Blade Helicopter Blade Balancer (priced at $29.99)
– Microheli Precision RC Helicopter Mini Blade Balancer (priced at $19.99)
– Dubro Tru-Spin Propeller Balancer (priced at $45.99)


– TZZ RC Helicopter Blade Balancer (priced at $13.99)
– RCmall Flybarless Helicopter Main Blade Balancer (priced at $13.99)
– Du-Bro Products Tru-Spin Prop Balancer (priced at $39.99)

While these tools are not necessary for every RC helicopter enthusiast, they can be extremely helpful for ensuring the smooth operation of your helicopter and preventing accidents during flight.

How do you balance RC helicopter blades?

To balance RC helicopter blades you need to take the following steps:

  • Make sure the blades are securely mounted on the rotor head.
  • Attach the blade balancer to the rotor head.
  • Turn on the blade balancer and wait for it to stabilize.
  • Place one blade on the balancer and note the position of the bubble.
  • Add weight to the lighter blade until the bubble is centered.
  • Repeat the process with the other blade.
  • Check that both blades are balanced by spinning the rotor head and making sure it stays level.

There are many websites and products available that can provide more information and guidance on how to balance RC helicopter blades, such as and Blade Balancer products on Amazon.

Step-by-Step Guide for Balancing Helicopter Blades

Once you have all the necessary tools, follow these simple steps to balance the blades of your RC helicopter:

  1. Attach the blade balancer to a stable surface, such as a table or workbench.
  2. Take one blade and attach it to the blade balancer, following the manufacturer’s instructions.
  3. Adjust the blade until it is perfectly level, using the bubble levels on the balancer as a guide.
  4. Add tape or weights to the blade to adjust its balance, as needed. Make sure to add weight on the lighter end of the blade.
  5. Check the balance again and repeat the process until the blade is perfectly balanced.
  6. Repeat steps 2-5 for the other blade. Make sure both blades are balanced equally.

Here are some additional tips to keep in mind while balancing your RC helicopter blades:

  • Be patient and take your time. Rushing through the process can affect the accuracy of the balance.
  • Make small adjustments when adding weight or tape. Adding too much weight at once can result in an imbalanced blade.
  • After completing the process, double-check the balance of each blade to ensure accuracy.

With these steps and tips in mind, you can balance your RC helicopter blades with confidence and ensure a smooth flight. If you need further assistance or guidance, many online forums dedicated to RC helicopter enthusiasts offer helpful advice and solutions.

How are Helicopter Blades Balanced?

Helicopter blades are balanced by making minor adjustments to their weight distribution. Here’s how it’s done:

  • First, mechanics conduct a pre-balance check to ensure that the blades are in good condition and not damaged. They also inspect the rotor blades and hubs to ensure that they are correctly aligned.
  • Next, they use a balancing rig that measures the blades’ weight distribution while they are rotating.
  • Technicians then add or remove weight from the blades’ leading edge or trailing edge as necessary to achieve an even weight distribution.
  • Finally, they check the balance again to ensure that it meets the manufacturer’s specifications.

If you need to balance your helicopter blades, contact a reputable helicopter maintenance and repair service. Visit websites like or for more information on helicopter repair and maintenance services.

Testing the Blade Balance

Once you have balanced the helicopter blades, it’s important to test them for accuracy. Here’s how you can test the blade balance:

  1. Attach the balanced blades to the helicopter rotor head and spin the rotor.
  2. Use a rotor blade tracking tool to check the tracking of the blades. The blades should track evenly and have the same height at all points.
  3. If the tracking is off, recheck the balance of the blades and make adjustments as necessary.
  4. Double-check the balance of each blade after making any adjustments to ensure accuracy.

It’s important to note that some RC helicopter models come with pre-balanced blades, so they may not require additional balancing. If you’re unsure whether or not your RC helicopter blades need balancing, consult the manufacturer’s manual or contact their customer support.

There are also various products available in the market that can help you balance RC helicopter blades. Blade balancers, as mentioned earlier, are an essential tool for balancing blades accurately. Additionally, you can use tape or adhesive putty to adjust the balance of the blades. The Dubro Balancing Putty is a popular choice among RC helicopter enthusiasts.

While balancing the blades and testing for accuracy may seem like a tedious task, it’s crucial for safe and efficient flight. With patience, practice, and the right tools, you can easily balance your RC helicopter blades and enjoy a smooth flying experience.

How do you balance a helicopter blade?

Balancing a helicopter blade is crucial to ensure safe and efficient flight performance. Here are the basic steps to balance a helicopter blade:

  • Attach a tracking tool to the blade to measure its track
  • Spin the blade and monitor the tracking tool to identify any deviations
  • Add weight to the lighter side of the blade to balance it
  • Continue monitoring and adjusting until the blade tracks evenly

It is recommended to leave this task to a trained and experienced helicopter technician. Check with your local helicopter maintenance provider for assistance or refer to the manufacturer’s instructions for specific guidance.

For more information on helicopter maintenance and safety, visit websites such as Helicopter Association International (HAI) or the Federal Aviation Administration (FAA).


Balancing the blades of an RC helicopter is an essential part of maintaining its efficiency and safety. Unbalanced blades can cause instability, erratic flight behaviour, and even crashes. By following the step-by-step guide and tips mentioned in this article, you can balance your RC helicopter blades accurately and ensure a smooth flight experience.

Remember to take your time and be patient when balancing the blades, and always test their accuracy before flying. Investing in the right tools, such as a blade balancer and balancing putty or tape, can significantly improve the balancing process.

In conclusion, keeping your RC helicopter blades balanced is essential for safe and efficient flying. Mastering this skill will not only help extend the life of your helicopter but also enhance your flying experience. Take the time to learn and practice this skill, and enjoy the smooth and stable flight of your RC helicopter!