Archive for September, 2009

Training kits to allow beginners to fly their new RC helicopter safely

Thursday, September 10th, 2009

For beginner RC helicopter hobbyists, there is a fear at the back of their minds that they may not be able to handle the power and be able to control their brand new RC helicopter. This is compounded by the fact that they, or their parents, have just shelled out a significant amount of money on this purchase. Fear not, training kits can come to the rescue.

Training kits can take various forms such as training stands and other equipment such as foam balls and training skids, which have the sole purpose of helping to increase the stability of your RC helicopter while you first learn to fly. Everybody needs somewhere to begin and try out their RC helicopter outdoors for the first time. There are many obstacles and dangers out there which can prey on the minds of novice fliers.

Training kits can be bought for all sizes of RC helicopter; from the smaller indoor micro helicopters to the larger more complicated models. You can get training stands for specific models of radio control helicopters from the likes of E-SKY and Walkera.

So, fly your RC helicopter without fear and learn to master the art of flying without worrying about your helicopter going out of control with a training kit; you will be flying the helicopter unaided in no time!

RC Helicopters are well protected in a flight case

Wednesday, September 9th, 2009

When you have invested so much of your hard earned cash on your RC helicopter and all the accessories and parts that go with it, it would not be sensible to just leave it lying around the house or stick in the back of your car when travelling to the field to fly it. As with anything which is intricate and contains many moving parts, it can get damaged if not protected. That is when flight cases can come in handy.

All the main brands involved with the hobby of remote control helicopters produce flight cases, which can be used with specific models. E-SKY are one such brand which makes sure its helicopters can be kept safe and secure when not in use and can be used to transport the helicopter with ease. The flight cases usually contain enough room to also carry the transmitter batteries and charger, etc.

When looking around for a flight case online you need to make sure that your particular RC helicopter model will fit inside the specific flight case. Many high quality flight cases protect the helicopter using pre-cut foam and they are well worth the investment to keep your helicopter safe and undamaged.

Palm Size RC Helicopters are great for indoor flying

Tuesday, September 8th, 2009

As well as the usual full-size RC helicopters available to buy, there are also a number of palm sized and micro remote control helicopters on the market. These 4 channel helicopters are not toys and the helicopter models are still extremely well-built and have enough power for most enthusiasts.

You can get these smaller RC helicopters from the top brands such as Walkera and E-SKY. The helicopters can provide you with many hours of indoor fun and are great for all RC helicopter hobbyists.

Two of the most popular palm sized and micro models you can get are the E-SKY Lama V4 and the Walkera HM 5G6-1 Metal Edition. These packages provide everything you need to fly a micro helicopter. We will look briefly at each model in turn.

The Walkera HM 5G6-1 2.4G Metal Edition is a small 4 channel RC helicopter with a co-axial mechanism. Despite its small size, looks can be deceiving as it is still fully controllable. The helicopter is ideal for use in the home or office and is great for beginners.

The Lama V4 utilises a coaxial counter-rotating head and a 35 MHz radio. This helicopter is also great for first-time fliers and those who want to have some fun without some of the more intricate workings of the more complex models.

Whichever one you go for, you will be sure to have hours of fun with your micro RC helicopter. They are great for indoor flying and who knows, you may become hooked and want to take it up as a hobby with the more advanced models.

Troubleshooting RC Helicopters for Tail Jerks and Non Radio Related Problems Part 2

Monday, September 7th, 2009

This is the final look at the troubleshooting problems you may experience with RC helicopters. There are a lot of other things that may be affecting the performance, especially with the more complex models, but these are generally the most common. As well as the sensitivity of the gyro and its attachment, there are other things that can make the tail jerk and go into spasms every now and then.

Once you have checked that the electronics of the gyro are not being influenced by outside issues, make sure you check the belt drive (if you have one) to make sure the belt’s teeth aren’t catching on the inside of the boom. If the belt is too loose, this can happen quite easily.

You should also be sure to check the engine and see if it is the cause of any loss of power to the tail. The engine can often be the cause of tail jerks, especially if there is any spluttering. Also, make sure you aren’t running low on fuel.

Take a look at the drive shaft and make sure it is secure and hasn’t slipped or backed out. Finally, do a check on your belt, tail gears and pinion to make sure they have not been damaged.

As the tail is the most sensitive part of the RC helicopter, any radio hits can be more easily noticed. We looked at radio interference in the last article, so check back to make sure this isn’t the cause of the tail jerks. If all else fails, you may need to speak to an expert at your RC helicopter stockist, and I’m sure they’d only be too happy to help.

Troubleshooting RC Helicopters for Tail Jerks and Non Radio Related Problems Part 1

Sunday, September 6th, 2009

As we have established, there are many things that can go with radio control helicopters, but most of these can be fixed without too much problem. As well as the radio-related issues we have discussed, there are also things you can check if you experience random tail jerks.

There are a number of concerns such as tail jerks, wags or spasms which can happen from time to time and can be attributed to the gyro. The gyro needs to be just right, i.e. not too sensitive, nor too lax either. This might be more obvious during fast flight when the tail is more sensitive anyway. You need to watch your rpm’s when attempting any aerobatics, especially if you suspect there may be a problem. You may just need to decrease your gain slightly.

Another common problem occurs when the gyro is not mounted properly. The gyro may not be secure and you should use the base to mount it on a horizontal surface. Only use the gyro tape which is designed for use with your gyro. This may seem obvious, but may be the cause of your tail jerks.

The final gyro problem we will consider is high frequency vibrations which can easily interfere with the inner workings of the gyro and affect its performance.

Troubleshooting RC Helicopters for Radio Problems Part 2

Saturday, September 5th, 2009

As promised, we will now be detailing the common causes of radio interference and lockout which can affect RC electric helicopters. Hopefully, some of these points may resonate with you and you can now locate and try to fix the problem, then you can get back flying again.

These are some of the radio problems you may encounter:

• If your radio antenna has touched something metal, this can cause interference. Also, make sure that your metal to metal screws are loctited, as well as the main shaft.
• If there is a rattling or vibration problem then this may be caused by a loose metal to metal connection somewhere. There may even be a loose connection inside your receiver.
• Check the bearings to see if they have been damaged in some way. Make sure the bearings in the tail gear are sufficiently greased.
• You may be getting some interference from somebody’s TV channel which is on a harmonic frequency. Or, you may be flying too close to another person who is on the same channel as you.
• The antenna may be in too close a proximity to other electronics.
• The receiver may not be securely insulated from the engine vibrations of your craft.

Finally, if all the electrical connections are fully secure, it may just be that you have low battery power on your receiver or transmitter. Make sure you are in a place where the antenna has the strongest signal possible and away from other electronic devices. If there is still a problem, it may not be radio-related.

Troubleshooting RC Helicopters for Radio Problems Part 1

Friday, September 4th, 2009

In the past couple of articles we have looked at the things you need to check if your RC helicopter doesn’t seem to be flying as it should. You may be a beginner and not know what you are looking for, or a more experienced flying enthusiast who just needs a few pointers to locate the problem.

Whatever issues you are having with your RC helicopter, there is surely a way to get it flying again in no time – once you have figured out what the issue is. Now, over this and the next article, we will look at some of the radio problems which may affect an RC helicopter.

It may not be comforting to know but there can be many causes of radio interference and lockout which can affect your RC helicopter. If you are using just FM, then radio hits will be shown through a series of jerks and spasms during flight. If you are using PCM, your controls may just stop responding to your instructions and just revert to your pre-programmed positions.

As I mentioned previously, there are a number of things which could be affecting the radio transmitter and preventing you from enjoying your hobby. We will be looking at what these causes might be, next.

Troubleshooting RC Helicopters Part 2

Thursday, September 3rd, 2009

In addition to the problems described in the last article, there are many other things that could go wrong with your RC helicopter. If your helicopter starts to vibrate and shake when flying at low speeds, it can look a bit disconcerting. There are a few things you could check out though, to locate the problem.

Again, you should first check the balance and tracking of your helicopter’s rotor blades. Also, you should check that the blade grips are spaced evenly away from the head, and that the blade grips haven’t shifted too much.

You can also check the flybar to measure the distance out from the centre, making sure the paddles are screwed in the same too. Check that the head, flybar or spindle have not been damaged or bent in any way. The main shaft may be bent, but it would have to be removed for you to check this out.

If you have been experiencing shaking when flying the helicopter at a higher frequency (100-300Hz) then there are just a few things that could be causing this to happen. These include;

• The crank shaft or the start shaft may be bent
• The clutch may be damaged or unbalanced
• The cooling fan may not be balanced correctly
• There may be a problem with the tail blades or tail mast
• You may have damaged the pinions or drive gears.

Troubleshooting RC Helicopters Part 1

Wednesday, September 2nd, 2009

If you have recently purchased an RC helicopter and you excitedly took it outside to get it flying, but everything that could go wrong did, then you are certainly not alone. Sometimes it is hard to figure out why it didn’t go quite according to plan. And this goes for those more experienced too, sometimes. Hopefully, some of these tips should be able to help you get your helicopter airborne.

There are many situations where you may not be aware that your helicopter is damaged or not set up correctly, so here are a few pointers you could follow.

Firstly, you need to make sure that the tracking on your RC helicopter is even and steady. If any of the blade pitch rods is longer than the other than this may cause problems when flying. Also, be sure to check the feathering shaft to see if it is bent or damaged. The paddles need to be level, so check that they are. The centre of gravity could also be out and this will happen if the blades are of differing weights.

If you find that your RC helicopter has started to pull up or dive when in forward flight then you could always check the following which may have impacted upon the helicopter. The pitch in the paddles may be slightly positive or negative and may need adjusting. The other issue that may be affecting the flight is if the helicopter is nose or tail heavy.

If your RC helicopter is still flying unevenly and is pitchy, then you may need heavier paddles or flybar weights could be added.

The 2.4GHz bandwidth and what it does for your flying career

Tuesday, September 1st, 2009

If you are looking at buying a new RC helicopter and wondering what all the fuss surrounding ones that have a feature called 2.4GHz spread spectrum is, then you might want to read on.

In the early days of RC controlled helicopters you had to ask all your friends what frequency they were going to fly on so there was no interference between copters that might be flying at the same time. Your old copters used to work on either PPM or PCM which meant interference just when you didn’t want it. The new 2.4GHz bandwidth has done away with this though meaning crystals and peg boards can be consigned to things of the past.

A new type of technology called spread spectrum modulation has now been developed meaning RC helicopters can now operate over a range of channels within the 2.4GHz frequency simultaneously. Each transmitter is assigned its own unique ‘set’ to operate at a frequency on the 2.4GHz bandwidth and with so many frequencies available the chances of someone else also operating at this frequency is remote.

This means if you have a copter that runs on the 2.4GHz bandwidth you can fly with your buddies with no problems of interference, and because the commands from your transmitter are processed more quickly on this bandwidth your copter will respond more quickly to your actions.