How To Balance RC Helicopter Blades? [Step-By-Step]

Seeing something fly makes a good impression on everyone’s mind, especially when something can be flown by oneself, it gives him a lot of joy. And if it is an RC Helicopter, then it is out of the question. 

Just as it is a pleasure to fly an RC Helicopter, there are many problems in the beginning. When I bought my first RC Helicopter, like many other problems, I had to deal with Blades’s balance.

Now you don’t have to go through any more problems because I have come to solve your problem. If you want to know the process completely, keep reading till the end.

Which Materials Are Used In The RC Helicopter Blades?

Rotor blades are usually made of aluminum, fiberglass, plastic, or carbon fiber. The tail blades of this RC Helicopter are also made of the same materials.

How Many Blades Are There In An RC Helicopter?

The number of blades may vary depending on the size as well as the function of the RC Helicopter. Usually, the number of blades can be from 2 to 7. However, the RC Helicopter that we use usually has two blades.

Now a question may come to mind, why two blades are used more? Motor speed is related to the lifting of the RC Helicopter.

When the helicopter needs to change direction, the 2 blades give more convenience. The advantage of having two blades is that the torque ball is canceled due to rotation and the helicopter does not rotate in one direction. 

How To Balance RC Helicopter Blades

How To Balance RC Helicopter Blades: Step-by-Step Guideline 

Balancing the blades of the RC Helicopter is the most delicate task. A little difference has a lot of effect on the balance. There will be no balance even for a difference of 0.01gm weight. So, balancing the blades has to be done very carefully and in places where there is no wind effect at all.

Necessary Tools To Balance The Blade:

  • Blades balancer
  • Precision scale (Which can measure 0.01gm)
  • 2D Marker (different color)
  • Some clear scotch tapes
  • Scissor 

Steps To Follow

Step 01: Put all the tools in one place and unload the blades from the RC Helicopter.

Step 02: Keep the blade balancer fixed on the table.

Step 03: Thoroughly clean the upper surface and the lower surface of the two blades of the Rc Helicopter. This will not be a problem in diagnosing weight and CG.

Step 04:  Now find out through a precision scale which blade weighs more and which blade weighs less. Mark the one that weighs more like the heavier and the one that weighs less like the light blade with the help of the markers.

Step 05: Write down the weight of the two blades. And find the difference between the two.

Step 06: Now you need to find the CG of the two blades. CG stands for the center of gravity. It is the position of an object where all the masses of that object are located or the balance point of an object.

Step 07: Place the light blade on the blade balancer, take out the CG and mark it with a marker. Similarly, take out the CG of the heavy blade and mark it with a marker.

Step 08: After taking out the CG, see whether the CG points of the two are in different places. Now take out your notebook and see how much difference there is between the weights of the two blades.

Cut the scotch tape of equal weight with scissors and apple the wight to the light blades as much as the difference is there. Now measure the CG again to see if it is ok.

Step 09: If the CG of the two is not equal, then apply scotch tape to the two blades and try again and again until their CG is equal.

Step 10: When the CG of the two blades becomes equal, then measure the two blades on the precision scale and see whether the weight of both is equal. This way, you can easily determine the blade balancing of your RC Helicopter.

How To Balance The Tail Blade Of An RC Helicopter:

If you do not have a balance of tail blades of an RC helicopter, then you can balance the blades in this same way.

Some Balancing Problems And How To Fix Them:

If you follow my instructions, there should be no problem. But many times, lack of experience can inadvertently lead to many mistakes. We must try to avoid all these mistakes.

Wind Problems:

In the case of balancing, the problem of air is most affected. Because measuring CG for wind can cause a lot of problems. The CG point can move sideways in a little wind.

Again, when the weight is measured with a precision scale, the weight loss may increase due to the influence of the wind. So, the wind should be avoided as much as possible, and balancing should be done in places where there is no air.

Dirt Problems:

If the blade is dirty, there may be a problem in extracting CG and weight. Weight gain will be due to dirt, and it will not be possible to determine the CG point correctly. So before balancing, you should clean the dirt well.

Frequently Asked Questions

How Long Will It Take Me To Finish This Whole Process?

Answer: It usually takes 30-40 minutes to complete the whole process.

Can I Use More Than Two Blades?

Answer: Yes, you can. You can use a 2-7 blade Rc helicopter if you want.

How Long Can The Blades Of An RC Helicopter Be?

Answer: The length of the blade is usually 200-450 mm.

Can The Blades Cause Me Harm?

Answer: Yes, since these blades are made of different fibers besides aluminum and rotate when flying a helicopter, you have to be a little careful.

How Tight Should Rc Helicopter Blades Be?

Answer: The blade of RC helicopter should be tight enough so that it does not open during rotation.

How Long Do RC Helicopter Blades Last?

Answer: Usually lasts 2 to 3 years. If stored well then lasts longer.


Now you know in detail that, “how to balance RC Helicopter blades”. And so you can go through the most delicate and difficult steps before flying your RC Helicopter.

Follow the instructions and steps thoroughly that I’ve already mentioned above. Then read and learn all the ins and outs regarding the balancing of RC Helicopter blades.

Thus, within a few days, you will learn very well how to balance the blades of your own RC Helicopter. And after passing one or two steps, you will be able to become a master of all the knowledge about RC Helicopter.

So, if you have bought it already, then fly your helicopter indoor or outdoor, and if you have not bought it yet, then read the above instructions.

Best of luck!

Let’s meet Johan Lozano, the 2011 World Champion in F3N. Johan has also been the 2010 European Champion in F3N, and a five-time national winner of the German F3N competition. F3N is a brand new RC helicopter competition category formed under the Federal Aeronautique Internationale. He is 64 years old and He is a carpenter by trade and He lives near East Bayberry Street Hanford, United States. He started flying in 2001 with a Raptor 50.

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