How to Buy Rotor Blades for Your Radio Control Helicopter

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How to Buy Rotor Blades for Your Radio Control Helicopter

Before buying a new set of rotors or tail blades for a toy radio control helicopter on eBay, it is important to test those on the helicopter already. If they work then they will probably be the right parts for that make and model.

The rotor blades are situated at the top of the radio control helicopter and are absolutely fundamental to the aircraft’s ability to fly. If they are in any way damaged or are not operational then do not attempt to fly the helicopter.

Checking Your Remote Controlled Helicopter Rotor Blades

  • The first test is to check that the rotor doesn’t wobble and rotates evenly.
  • Secondly, keep an eye out for vibrations.
  • These will occur as the helicopter rotors first start to spool.
  • As the revs and the speed of rotation increases the vibration should stop.
  • If it starts increasing then it is advisable to reduce the power and close down the engine as there may be a fault, which, could damage the workings of the helicopter.

If the vibrations disappear, increase the power of the engine and allow the helicopter to hover for about thirty seconds then turn it off.

After the engine is turned off check the rotors are still firmly fixed to the blade holders and the rotor heads. If everything is still working and intact then the helicopter is probably ready to fly.

Remote Controlled Helicopter Rotor Blade Material

When thinking about buying rotor blades the first consideration is the materials available.

The material must be strong enough to endure some pretty serious stresses and strains. These will include:

high and low frequency vibrations

  • g-force
  • friction
  • centrifugal force

The materials need to be incredibly strong but also light enough for the helicopter to get off the ground.

The following components need to work well together and endure considerable force:

  • Main frame
  • ail boom
  • Blade holders
  • Rotor heads
  • Swash plates


Traditionally aluminum has been the material of choice. It is:

  • light
  • cheap
  • good at absorbing heat 
  • relatively easy to shape and adapt

Even today it is still the most common material used in main frames and tail booms for nitro, petrol and turbine radio control helicopters. It cannot be used in micro helicopters as it is too heavy. Aluminium can also suffer from stress cracks particularly in nitro helicopters that operate with very high frequency vibrations. Cracks in the aluminum particularly occur when the engine is mounted to the side frames or at the starter shaft, bearing block.

The only other issue with aluminum is that if crashed there can be very slight bends or twists that can be very hard to spot and these can cause greater damage in the long term.


Incredibly flexible and a very good absorber of vibration and heat plastic overcomes many of the problems associated with aluminum. It does bend until it actually breaks so small kinks or twists after a crash either go back to their correct shape or are clearly visible. On engine mounts and areas of the aircraft that need really strong support aluminum is actually used with plastic as the foundation of something like an engine mount.

  • Plastic is generally used on the smaller nitro or electric radio control helicopters
  • Plastic is rarely used on the bigger petrol or turbine models.

The reason for this is that it is too flexible where big rotors and engines are in operation and cannot carry heavy the components required in the bigger, heavier models.


This is becoming increasingly popular in some of the bigger models. The material is:

  •  flexible but strong
  • has good load bearing qualities
  •  very inexpensive

This is why many enthusiasts are turning to it particularly for frames and booms.

Carbon Fibre

This is the ideal material across many components of the huge range of different radio control helicopters . It has exceptional strength but is extraordinarily light. It can be rigid or flexible and absorbs vibration very well. Heat and fuel types don’t seem to affect it negatively and it is great to work with. Its only drawback is price. It is still three times more expensive than any other material and until this changes the carbon fibre components will mainly be bought by the more accomplished and professional radio control enthusiast.

Buying rotor blades will depend entirely on the make, model and size of the remote control helicopter. The rotor blades need to be the correct weight, length and shape to generate the pull force to fly the machine. The blades also need to be the right shape to fit onto the helicopter. The range of blades is huge but the main brands to watch out for are:

  • Walkera
  • Syma
  • Optipower
  • Climb –Out
  • Lama
  • Blade

Blades for Beginners

As a general rule, do not buy carbon fibre blades if the flier is a beginner or relatively new to the hobby. There are blades of different prices ranges and type depending on the type of helicopter and the type of flying.

Wooden blades are best for starting out as they are very cheap and so if the helicopter is crashed and the blades are broken, it is easy and financially viable to replace them.

The wooden blades are not very good for acrobatics as they lack the flexibility and strength required for this type of flying. For a slightly more professional approach then fibre glass blades probably provide the best option. They are flexible and strong and will withstand quite serious flying pressure but they are also relatively inexpensive. The limitation of fibre glass is its weight which is often too great for the smaller helicopters and is difficult to balance with the bigger models. Carbon fibre is the best but it is very expensive; avoid it until you have the experience.


In general, all remote control helicopters either have single or double rotor blades although some of the larger models will have more.

· Make sure that the make / model of the blades matches the helicopter make / model.

· Try to buy the highest quality blades within a sensible budget but don’t overspend.

If the enthusiast has only just started flying the blades are sure to get damaged in crashes and so a mid range set of blades will give a good performance but be easily and cost effectively replaced if damaged.

Basically make sure the blades and the level of investment in them matches the power of the helicopter and the ability of the person operating the machine. Keep a close eye on the condition of all blades as they are easily damaged and if broken in any way will be seriously detrimental to the performance of the helicopter .

Buying Rotor Blades for Your Radio Control Helicopter on eBay

Now that you've worked out which Rotor Blades for your radio control helicopter you want, find them quickly on eBay. To start shopping, go to the Toys & Games category, Radio-Controlled and click the Helicopter's portal then Parts & Accessories.


The Categories list on the left side of each page will help narrow down the listings by item type. There are links for brands such as:  Align, Syma, Raptor, Kyosho, Walkera and CNC.

Product Finder

Use the Radio Controlled Helicopter Accessories Finder to quickly narrow down item listings by brand, model and condition (new or used).

Keyword Search

Search eBay listing titles for specific words. For example, to find new Radio Controlled Helicopter Accessories, type the keywords "Radio Controlled Helicopter Accessories new" (without quotation marks) into the Search box. Click, "Search title and description" to expand the results. Visit eBay's Search Tips page for more tips on searching with keywords.

If you can't find exactly what you want, try browsing eBay Stores or tell the eBay Community what you’re looking for by creating a post on Want It Now, or save a search on My eBay and eBay will email you when a matching item becomes available.

Buy the Right Replacement Parts for Your Radio Controlled Helicopter with Confidence

Make sure that you know exactly what you’re buying and understand how eBay and PayPal protect you.

Know the Item

  • Read the details in the item listing carefully.
  • Remember to add delivery costs to the final price. If buying a high value item, check that the seller will insure it until it is delivered to you.
  • If you want more information, click the “Ask seller a question” button on the seller’s profile or the “Ask a question” link at the bottom of the item listing page.
  • Always complete a transaction on eBay (with a bid, Buy it Now or Best Offer) otherwise you will not be covered by eBay Buyer Protection.
  • Never pay for an eBay item using an instant cash wire transfer service like Western Union or MoneyGram. These are not safe ways of paying someone you do not know.

Know the Seller

Research the seller to feel safe and positive about every transaction.

  • What is the seller’s Feedback rating? 
  • How many transactions have they completed?
  • How many positive responses do they have?
  • What do buyers say in their Feedback? 
  • Are they positive about the seller?
  • Most top eBay sellers operate like retail shops and have a returns policy.
  • Do they offer a money-back guarantee? 
  • What are their terms and conditions?

Buyer Protection

In the very unlikely event that you do not receive your item or it is not as described, eBay Buyer Protection covers your purchase price plus original delivery cost.

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